gold/testsuite/justsyms_exec.c

   1 // justsyms_exec.c -- test --just-symbols for gold
   2
   3 // Copyright (C) 2011-2021 Free Software Foundation, Inc.
   4 // Written by Cary Coutant <ccoutant@google.com>.
   5
   6 // This file is part of gold.
   7
   8 // This program is free software; you can redistribute it and/or modify
   9 // it under the terms of the GNU General Public License as published by
  10 // the Free Software Foundation; either version 3 of the License, or
  11 // (at your option) any later version.
  12
  13 // This program is distributed in the hope that it will be useful,
  14 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 // GNU General Public License for more details.
  17
  18 // You should have received a copy of the GNU General Public License
  19 // along with this program; if not, write to the Free Software
  20 // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  21 // MA 02110-1301, USA.
  22
  23 // The Linux kernel builds an executable file using a linker script, and
  24 // then links against that object file using the -R option.  This is a
  25 // test for that usage.
  26
  27 #include <stdio.h>
  28
  29 extern int exported_func(void);
  30
  31 extern int exported_data;
  32
  33 static int errs = 0;
  34
  35 void check(void *sym, long v, const char *name);
  36
  37 void
  38 check(void *sym, long v, const char *name)
  39 {
  40   if (sym != (void *)v)
  41     {
  42       fprintf(stderr, "&%s is %8p, expected %08lx\n", name, sym, v);
  43       errs++;
  44     }
  45 }
  46
  47 int
  48 main(void)
  49 {
  50 #if !defined (__powerpc64__) || (defined (_CALL_ELF) && _CALL_ELF == 2)
  51   /* PowerPC64 ELFv1 uses function descriptors.  */
  52   check(exported_func, 0x1000200, "exported_func");
  53 #endif
  54   check(&exported_data, 0x2000000, "exported_data");
  55   return errs;
  56 }