elf/vismain.c

   1 /* Copyright (C) 2000-2014 Free Software Foundation, Inc.
   2    This file is part of the GNU C Library.
   3
   4    The GNU C Library is free software; you can redistribute it and/or
   5    modify it under the terms of the GNU Lesser General Public
   6    License as published by the Free Software Foundation; either
   7    version 2.1 of the License, or (at your option) any later version.
   8
   9    The GNU C Library is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12    Lesser General Public License for more details.
  13
  14    You should have received a copy of the GNU Lesser General Public
  15    License along with the GNU C Library; if not, see
  16    <http://www.gnu.org/licenses/>.  */
  17
  18 #include <stdio.h>
  19 #include <stdlib.h>
  20 #include <string.h>
  21
  22 #include "vismod.h"
  23
  24 /* Prototype for our test function.  */
  25 extern int do_test (void);
  26
  27 #define TEST_FUNCTION do_test ()
  28
  29 /* This defines the `main' function and some more.  */
  30 #include <test-skeleton.c>
  31
  32
  33 /* Prototypes for local functions.  */
  34 extern int protlocal (void);
  35
  36 const char *protvarlocal = __FILE__;
  37 extern const char *protvarinmod;
  38 extern const char *protvaritcpt;
  39
  40 int
  41 do_test (void)
  42 {
  43   int res = 0;
  44   int val;
  45
  46   /* First test: check whether .protected is handled correctly by the
  47      assembler/linker.  The uses of `protlocal' in the DSOs and in the
  48      main program should all be resolved with the local definitions.  */
  49   val = protlocal () + calllocal1 () + calllocal2 ();
  50   if (val != 0x155)
  51     {
  52       puts ("\
  53 The handling of `.protected' seems to be implemented incorrectly: giving up");
  54       abort ();
  55     }
  56   puts ("`.protected' seems to be handled correctly, good!");
  57
  58   /* Function pointers: for functions which are marked local and for
  59      which definitions are available all function pointers must be
  60      distinct.  */
  61   if (protlocal == getlocal1 ())
  62     {
  63       puts ("`protlocal' in main and mod1 have same address");
  64       res = 1;
  65     }
  66   if (protlocal == getlocal2 ())
  67     {
  68       puts ("`protlocal' in main and mod2 have same address");
  69       res = 1;
  70     }
  71   if (getlocal1 () == getlocal2 ())
  72     {
  73       puts ("`protlocal' in mod1 and mod2 have same address");
  74       res = 1;
  75     }
  76   if (getlocal1 () () + getlocal2 () () != 0x44)
  77     {
  78       puts ("pointers to `protlocal' in mod1 or mod2 incorrect");
  79       res = 1;
  80     }
  81
  82   /* Next test.  This is similar to the last one but the function we
  83      are calling is not defined in the main object.  This means that
  84      the invocation in the main object uses the definition in the
  85      first DSO.  */
  86   if (protinmod != getinmod1 ())
  87     {
  88       printf ("&protinmod in main (%p) != &protinmod in mod1 (%p)\n",
  89               protinmod, getinmod1 ());
  90       res = 1;
  91     }
  92   if (protinmod == getinmod2 ())
  93     {
  94       puts ("`protinmod' in main and mod2 have same address");
  95       res = 1;
  96     }
  97   if (getinmod1 () == getinmod2 ())
  98     {
  99       puts ("`protinmod' in mod1 and mod2 have same address");
 100       res = 1;
 101     }
 102   if (protinmod () + getinmod1 () () + getinmod2 () () != 0x4800)
 103     {
 104       puts ("pointers to `protinmod' in mod1 or mod2 incorrect");
 105       res = 1;
 106     }
 107   val = protinmod () + callinmod1 () + callinmod2 ();
 108   if (val != 0x15800)
 109     {
 110       printf ("calling of `protinmod' leads to wrong result (%#x)\n", val);
 111       res = 1;
 112     }
 113
 114   /* A very similar text.  Same setup for the main object and the modules
 115      but this time we have another definition in a preloaded module. This
 116      one intercepts the references from the main object.  */
 117   if (protitcpt != getitcpt3 ())
 118     {
 119       printf ("&protitcpt in main (%p) != &protitcpt in mod3 (%p)\n",
 120               &protitcpt, getitcpt3 ());
 121       res = 1;
 122     }
 123   if (protitcpt == getitcpt1 ())
 124     {
 125       puts ("`protitcpt' in main and mod1 have same address");
 126       res = 1;
 127     }
 128   if (protitcpt == getitcpt2 ())
 129     {
 130       puts ("`protitcpt' in main and mod2 have same address");
 131       res = 1;
 132     }
 133   if (getitcpt1 () == getitcpt2 ())
 134     {
 135       puts ("`protitcpt' in mod1 and mod2 have same address");
 136       res = 1;
 137     }
 138   val = protitcpt () + getitcpt1 () () + getitcpt2 () () + getitcpt3 () ();
 139   if (val != 0x8440000)
 140     {
 141       printf ("\
 142 pointers to `protitcpt' in mod1 or mod2 or mod3 incorrect (%#x)\n", val);
 143       res = 1;
 144     }
 145   val = protitcpt () + callitcpt1 () + callitcpt2 () + callitcpt3 ();
 146   if (val != 0x19540000)
 147     {
 148       printf ("calling of `protitcpt' leads to wrong result (%#x)\n", val);
 149       res = 1;
 150     }
 151
 152   /* Now look at variables.  First a variable which is available
 153      everywhere.  We must have three different addresses.  */
 154   if (&protvarlocal == getvarlocal1 ())
 155     {
 156       puts ("`protvarlocal' in main and mod1 have same address");
 157       res = 1;
 158     }
 159   if (&protvarlocal == getvarlocal2 ())
 160     {
 161       puts ("`protvarlocal' in main and mod2 have same address");
 162       res = 1;
 163     }
 164   if (getvarlocal1 () == getvarlocal2 ())
 165     {
 166       puts ("`protvarlocal' in mod1 and mod2 have same address");
 167       res = 1;
 168     }
 169   if (strcmp (protvarlocal, __FILE__) != 0)
 170     {
 171       puts ("`protvarlocal in main has wrong value");
 172       res = 1;
 173     }
 174   if (strcmp (*getvarlocal1 (), "vismod1.c") != 0)
 175     {
 176       puts ("`getvarlocal1' returns wrong value");
 177       res = 1;
 178     }
 179   if (strcmp (*getvarlocal2 (), "vismod2.c") != 0)
 180     {
 181       puts ("`getvarlocal2' returns wrong value");
 182       res = 1;
 183     }
 184
 185   /* Now the case where there is no local definition.  */
 186   if (&protvarinmod != getvarinmod1 ())
 187     {
 188       printf ("&protvarinmod in main (%p) != &protitcpt in mod1 (%p)\n",
 189               &protvarinmod, getvarinmod1 ());
 190       // XXX Possibly enable once fixed.
 191       // res = 1;
 192     }
 193   if (&protvarinmod == getvarinmod2 ())
 194     {
 195       puts ("`protvarinmod' in main and mod2 have same address");
 196       res = 1;
 197     }
 198   if (strcmp (*getvarinmod1 (), "vismod1.c") != 0)
 199     {
 200       puts ("`getvarinmod1' returns wrong value");
 201       res = 1;
 202     }
 203   if (strcmp (*getvarinmod2 (), "vismod2.c") != 0)
 204     {
 205       puts ("`getvarinmod2' returns wrong value");
 206       res = 1;
 207     }
 208
 209   /* And a test where a variable definition is intercepted.  */
 210   if (&protvaritcpt == getvaritcpt1 ())
 211     {
 212       puts ("`protvaritcpt' in main and mod1 have same address");
 213       res = 1;
 214     }
 215   if (&protvaritcpt == getvaritcpt2 ())
 216     {
 217       puts ("`protvaritcpt' in main and mod2 have same address");
 218       res = 1;
 219     }
 220   if (&protvaritcpt != getvaritcpt3 ())
 221     {
 222       printf ("&protvaritcpt in main (%p) != &protvaritcpt in mod3 (%p)\n",
 223               &protvaritcpt, getvaritcpt3 ());
 224       // XXX Possibly enable once fixed.
 225       // res = 1;
 226     }
 227   if (getvaritcpt1 () == getvaritcpt2 ())
 228     {
 229       puts ("`protvaritcpt' in mod1 and mod2 have same address");
 230       res = 1;
 231     }
 232   if (strcmp (protvaritcpt, "vismod3.c") != 0)
 233     {
 234       puts ("`protvaritcpt in main has wrong value");
 235       res = 1;
 236     }
 237   if (strcmp (*getvaritcpt1 (), "vismod1.c") != 0)
 238     {
 239       puts ("`getvaritcpt1' returns wrong value");
 240       res = 1;
 241     }
 242   if (strcmp (*getvaritcpt2 (), "vismod2.c") != 0)
 243     {
 244       puts ("`getvaritcpt2' returns wrong value");
 245       res = 1;
 246     }
 247
 248   return res;
 249 }
 250
 251
 252 int
 253 protlocal (void)
 254 {
 255   return 0x1;
 256 }