tools/testing/selftests/powerpc/alignment/paste_unaligned.c

   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 paste which are not 128-byte aligned should be caught
  10  * 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
  20 unsigned int expected_instruction = PPC_INST_PASTE;
  21 unsigned int instruction_mask = 0xfc0007fe;
  22
  23 int test_paste_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         copy(cacheline_buf);
  32
  33         /* +1 makes buf unaligned */
  34         paste(cacheline_buf+1);
  35
  36         /* We should not get here */
  37         return 1;
  38 }
  39
  40 int main(int argc, char *argv[])
  41 {
  42         return test_harness(test_paste_unaligned, "test_paste_unaligned");
  43 }