LXR linux/tools/testing/selftests/powerpc/alignment/copy_first

   1/*
   2 * Copyright 2016, Chris Smart, IBM Corporation.
   3 *
   4 * This program is free software; you can redistribute it and/or
   5 * modify it under the terms of the GNU General Public License
   6 * as published by the Free Software Foundation; either version
   7 * 2 of the License, or (at your option) any later version.
   8 *
   9 * Calls to copy_first which are not 128-byte aligned should be
  10 * caught and sent a SIGBUS.
  11 *
  12 */
  13
  14#include <string.h>
  15#include <unistd.h>
  16#include "utils.h"
  17#include "instructions.h"
  18#include "copy_paste_unaligned_common.h"
  19
  20unsigned int expected_instruction = PPC_INST_COPY_FIRST;
  21unsigned int instruction_mask = 0xfc2007fe;
  22
  23int test_copy_first_unaligned(void)
  24{
  25        /* Only run this test on a P9 or later */
  26        SKIP_IF(!have_hwcap2(PPC_FEATURE2_ARCH_3_00));
  27
  28        /* Register our signal handler with SIGBUS */
  29        setup_signal_handler();
  30
  31        /* +1 makes buf unaligned */
  32        copy_first(cacheline_buf+1);
  33
  34        /* We should not get here */
  35        return 1;
  36}
  37
  38int main(int argc, char *argv[])
  39{
  40        return test_harness(test_copy_first_unaligned, "test_copy_first_unaligned");
  41}
  42