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

   1 /* This testcase is part of GDB, the GNU debugger.
   2
   3    Copyright 2015-2020 Free Software Foundation, Inc.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; either version 3 of the License, or
   8    (at your option) any later version.
   9
  10    This program is distributed in the hope that it will be useful,
  11    but WITHOUT ANY WARRANTY; without even the implied warranty of
  12    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13    GNU General Public License for more details.
  14
  15    You should have received a copy of the GNU General Public License
  16    along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
  17
  18 #include <stdlib.h>
  19 #include <stdio.h>
  20
  21 typedef void (*testcase_ftype) (void);
  22
  23 /* The arch-specific files need to implement both the initialize function
  24    and define the testcases array.  */
  25
  26 #if (defined __aarch64__)
  27 #include "insn-reverse-aarch64.c"
  28 #elif (defined __arm__)
  29 #include "insn-reverse-arm.c"
  30 #elif (defined __x86_64__) || (defined __i386__)
  31 #include "insn-reverse-x86.c"
  32 #else
  33 /* We get here if the current architecture being tested doesn't have any
  34    record/replay instruction decoding tests implemented.  */
  35 static testcase_ftype testcases[] = {};
  36
  37 /* Dummy implementation in case this target doesn't have any record/replay
  38    instruction decoding tests implemented.  */
  39
  40 static void
  41 initialize (void)
  42 {
  43 }
  44 #endif
  45
  46 /* GDB will read n_testcases to know how many functions to test.  The
  47    functions are implemented in arch-specific files and the testcases
  48    array is defined together with them.  */
  49 static int n_testcases = (sizeof (testcases) / sizeof (testcase_ftype));
  50
  51 static void
  52 usage (void)
  53 {
  54   printf ("usage: insn-reverse <0-%d>\n", n_testcases - 1);
  55 }
  56
  57 static int test_nr;
  58
  59 static void
  60 parse_args (int argc, char **argv)
  61 {
  62   if (argc != 2)
  63     {
  64       usage ();
  65       exit (1);
  66     }
  67
  68   char *tail;
  69   test_nr = strtol (argv[1], &tail, 10);
  70   if (*tail != '\0')
  71     {
  72       usage ();
  73       exit (1);
  74     }
  75
  76   int in_range_p = 0 <= test_nr && test_nr < n_testcases;
  77   if (!in_range_p)
  78     {
  79       usage ();
  80       exit (1);
  81     }
  82 }
  83
  84 int
  85 main (int argc, char **argv)
  86 {
  87   parse_args (argc, argv);
  88
  89   /* Initialize any required arch-specific bits.  */
  90   initialize ();
  91
  92   testcases[test_nr] ();
  93
  94   return 0;
  95 }