gdb/testsuite/gdb.reverse/insn-reverse.c

/* This testcase is part of GDB, the GNU debugger.

   Copyright 2015-2021 Free Software Foundation, Inc.

   This program is free software; you can redistribute it and/or modify
   it under the terms of the GNU General Public License as published by
   the Free Software Foundation; either version 3 of the License, or
   (at your option) any later version.

   This program is distributed in the hope that it will be useful,
   but WITHOUT ANY WARRANTY; without even the implied warranty of
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License
   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */

#include <stdlib.h>
#include <stdio.h>

typedef void (*testcase_ftype) (void);

/* The arch-specific files need to implement both the initialize function
   and define the testcases array.  */

#if (defined __aarch64__)
#include "insn-reverse-aarch64.c"
#elif (defined __arm__)
#include "insn-reverse-arm.c"
#elif (defined __x86_64__) || (defined __i386__)
#include "insn-reverse-x86.c"
#else
/* We get here if the current architecture being tested doesn't have any
   record/replay instruction decoding tests implemented.  */
static testcase_ftype testcases[] = {};

/* Dummy implementation in case this target doesn't have any record/replay
   instruction decoding tests implemented.  */

static void
initialize (void)
{
}
#endif

/* GDB will read n_testcases to know how many functions to test.  The
   functions are implemented in arch-specific files and the testcases
   array is defined together with them.  */
static int n_testcases = (sizeof (testcases) / sizeof (testcase_ftype));

static void
usage (void)
{
  printf ("usage: insn-reverse <0-%d>\n", n_testcases - 1);
}

static int test_nr;

static void
parse_args (int argc, char **argv)
{
  if (argc != 2)
    {
      usage ();
      exit (1);
    }

  char *tail;
  test_nr = strtol (argv[1], &tail, 10);
  if (*tail != '\0')
    {
      usage ();
      exit (1);
    }

  int in_range_p = 0 <= test_nr && test_nr < n_testcases;
  if (!in_range_p)
    {
      usage ();
      exit (1);
    }
}

int
main (int argc, char **argv)
{
  parse_args (argc, argv);

  /* Initialize any required arch-specific bits.  */
  initialize ();

  testcases[test_nr] ();

  return 0;
}