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8#include "mte.h"
9
10void pass(int sig, siginfo_t *info, void *uc)
11{
12 assert(info->si_code == SEGV_MTESERR);
13 exit(0);
14}
15
16int main(int ac, char **av)
17{
18 struct sigaction sa;
19 void *p0, *p1, *p2;
20 long excl = 1;
21
22 enable_mte(PR_MTE_TCF_SYNC);
23 p0 = alloc_mte_mem(sizeof(*p0));
24
25
26 asm("irg %0,%1,%2" : "=r"(p1) : "r"(p0), "r"(excl));
27 asm("gmi %0,%1,%0" : "+r"(excl) : "r" (p1));
28 assert(excl != 1);
29 asm("irg %0,%1,%2" : "=r"(p2) : "r"(p0), "r"(excl));
30 assert(p1 != p2);
31
32 memset(&sa, 0, sizeof(sa));
33 sa.sa_sigaction = pass;
34 sa.sa_flags = SA_SIGINFO;
35 sigaction(SIGSEGV, &sa, NULL);
36
37
38 asm("stg %0, [%0]" : : "r"(p1));
39 asm("stg %0, [%0]" : : "r"(p2 + 16));
40
41
42 asm volatile("ldr %0, [%1]" : "=r"(p0) : "r"(p1 + 12));
43 abort();
44}
45