LXR qemu/tests/tcg/aarch64/mte-1.c

   1/*
   2 * Memory tagging, basic pass cases.
   3 *
   4 * Copyright (c) 2021 Linaro Ltd
   5 * SPDX-License-Identifier: GPL-2.0-or-later
   6 */
   7
   8#include "mte.h"
   9
  10int main(int ac, char **av)
  11{
  12    int *p0, *p1, *p2;
  13    long c;
  14
  15    enable_mte(PR_MTE_TCF_NONE);
  16    p0 = alloc_mte_mem(sizeof(*p0));
  17
  18    asm("irg %0,%1,%2" : "=r"(p1) : "r"(p0), "r"(1));
  19    assert(p1 != p0);
  20    asm("subp %0,%1,%2" : "=r"(c) : "r"(p0), "r"(p1));
  21    assert(c == 0);
  22
  23    asm("stg %0, [%0]" : : "r"(p1));
  24    asm("ldg %0, [%1]" : "=r"(p2) : "r"(p0), "0"(p0));
  25    assert(p1 == p2);
  26
  27    return 0;
  28}
  29