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Linkers in some versions of binutils 2.25 and 2.26 don't support protected data symbol with error messsage like: /usr/bin/ld: copy reloc against protected `bar' is invalid /usr/bin/ld: failed to set dynamic section sizes: Bad value We check if linker supports copy reloc against protected data symbol to avoid running the test if linker is broken. [BZ #17711] * config.make.in (have-protected-data): New. * configure.ac: Check linker support for protected data symbol. * configure: Regenerated. * elf/Makefile (modules-names): Add tst-protected1moda and tst-protected1modb if $(have-protected-data) is yes. (tests): Add tst-protected1a and tst-protected1b if $(have-protected-data) is yes. ($(objpfx)tst-protected1a): New. ($(objpfx)tst-protected1b): Likewise. (tst-protected1modb.so-no-z-defs): Likewise. * elf/tst-protected1a.c: New file. * elf/tst-protected1b.c: Likewise. * elf/tst-protected1mod.h: Likewise. * elf/tst-protected1moda.c: Likewise. * elf/tst-protected1modb.c: Likewise.
243 lines
6.2 KiB
C
243 lines
6.2 KiB
C
/* Test the protected visibility when main is linked with modb and moda
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in that order:
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1. Protected symbols, protected1, protected2 and protected3, defined
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in moda, are used in moda.
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2. Protected symbol, protected3, defined in modb, are used in modb
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3. Symbol, protected1, defined in modb, is used in main and modb.
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4. Symbol, protected2, defined in main, is used in main.
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5. Symbol, protected3, defined in modb, is also used in main.
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Copyright (C) 2015 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<http://www.gnu.org/licenses/>. */
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/* This file must be compiled as PIE to avoid copy relocation when
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accessing protected symbols defined in shared libaries since copy
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relocation doesn't work with protected symbols and linker in
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binutils 2.26 enforces this rule. */
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include "tst-protected1mod.h"
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/* Prototype for our test function. */
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extern int do_test (void);
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int protected2 = -1;
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#define TEST_FUNCTION do_test ()
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/* This defines the `main' function and some more. */
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#include <test-skeleton.c>
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int
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do_test (void)
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{
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int res = 0;
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/* Check if we get the same address for the protected data symbol. */
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if (&protected1 == protected1a_p ())
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{
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puts ("`protected1' in main and moda has same address");
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res = 1;
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}
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if (&protected1 != protected1b_p ())
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{
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puts ("`protected1' in main and modb doesn't have same address");
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res = 1;
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}
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/* Check if we get the right value for the protected data symbol. */
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if (protected1 != -3)
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{
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puts ("`protected1' in main and modb doesn't have same value");
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res = 1;
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}
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/* Check if we get the right value for data defined in executable. */
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if (protected2 != -1)
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{
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puts ("`protected2' in main has the wrong value");
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res = 1;
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}
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/* Check `protected1' in moda. */
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if (!check_protected1 ())
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{
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puts ("`protected1' in moda has the wrong value");
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res = 1;
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}
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/* Check `protected2' in moda. */
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if (!check_protected2 ())
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{
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puts ("`protected2' in moda has the wrong value");
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res = 1;
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}
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/* Check if we get the same address for the protected data symbol. */
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if (&protected3 == protected3a_p ())
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{
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puts ("`protected3' in main and moda has same address");
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res = 1;
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}
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if (&protected3 != protected3b_p ())
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{
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puts ("`protected3' in main and modb doesn't have same address");
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res = 1;
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}
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/* Check if we get the right value for the protected data symbol. */
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if (protected3 != -5)
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{
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puts ("`protected3' in main and modb doesn't have same value");
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res = 1;
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}
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/* Check `protected3' in moda. */
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if (!check_protected3a ())
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{
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puts ("`protected3' in moda has the wrong value");
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res = 1;
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}
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/* Check `protected3' in modb. */
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if (!check_protected3b ())
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{
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puts ("`protected3' in modb has the wrong value");
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res = 1;
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}
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/* Set `protected2' in moda to 30. */
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set_protected2 (300);
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/* Check `protected2' in moda. */
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if (!check_protected2 ())
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{
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puts ("`protected2' in moda has the wrong value");
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res = 1;
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}
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/* Check if we get the right value for data defined in executable. */
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if (protected2 != -1)
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{
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puts ("`protected2' in main has the wrong value");
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res = 1;
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}
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/* Set `protected1' in moda to 30. */
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set_protected1a (30);
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/* Check `protected1' in moda. */
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if (!check_protected1 ())
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{
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puts ("`protected1' in moda has the wrong value");
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res = 1;
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}
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/* Check if we get the same value for the protected data symbol. */
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if (protected1 != -3)
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{
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puts ("`protected1' in main has the wrong value");
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res = 1;
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}
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protected2 = -300;
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/* Check `protected2' in moda. */
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if (!check_protected2 ())
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{
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puts ("`protected2' in moda has the wrong value");
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res = 1;
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}
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/* Check if data defined in executable is changed. */
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if (protected2 != -300)
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{
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puts ("`protected2' in main is changed");
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res = 1;
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}
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/* Set `protected1' in modb to 40. */
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set_protected1b (40);
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/* Check `protected1' in moda. */
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if (!check_protected1 ())
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{
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puts ("`protected1' in moda has the wrong value");
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res = 1;
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}
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/* Check if we get the updated value for the protected data symbol. */
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if (protected1 != 40)
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{
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puts ("`protected1' in main doesn't have the updated value");
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res = 1;
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}
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/* Set `protected3' in moda to 80. */
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set_protected3a (80);
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/* Check `protected3' in moda. */
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if (!check_protected3a ())
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{
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puts ("`protected3' in moda has the wrong value");
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res = 1;
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}
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/* Check if we get the updated value for the protected data symbol. */
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if (protected3 != -5)
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{
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puts ("`protected3' in main doesn't have the updated value");
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res = 1;
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}
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/* Check `protected3' in modb. */
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if (!check_protected3b ())
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{
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puts ("`protected3' in modb has the wrong value");
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res = 1;
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}
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/* Set `protected3' in modb to 100. */
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set_protected3b (100);
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/* Check `protected3' in moda. */
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if (!check_protected3a ())
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{
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puts ("`protected3' in moda has the wrong value");
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res = 1;
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}
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/* Check if we get the updated value for the protected data symbol. */
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if (protected3 != 100)
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{
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puts ("`protected3' in main doesn't have the updated value");
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res = 1;
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}
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/* Check `protected3' in modb. */
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if (!check_protected3b ())
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{
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puts ("`protected3' in modb has the wrong value");
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res = 1;
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}
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return res;
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}
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