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Add a testcase for copy reloc against protected data
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.
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H.J. Lu
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Mar 31, 2015
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,236 @@ | ||
| /* Test the protected visibility when main is linked with moda and modb | ||
| in that order: | ||
| 1. Protected symbols, protected1, protected2 and protected3, defined | ||
| in moda, are used in moda. | ||
| 2. Protected symbol, protected3, defined in modb, are used in modb. | ||
| 3. Symbol, protected1, defined in moda, is also used in main and modb. | ||
| 4. Symbol, protected2, defined in main, is used in main. | ||
| 5. Symbol, protected3, defined in moda, is also used in main. | ||
| Copyright (C) 2015 Free Software Foundation, Inc. | ||
| This file is part of the GNU C Library. | ||
| The GNU C Library is free software; you can redistribute it and/or | ||
| modify it under the terms of the GNU Lesser General Public | ||
| License as published by the Free Software Foundation; either | ||
| version 2.1 of the License, or (at your option) any later version. | ||
| The GNU C Library 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 | ||
| Lesser General Public License for more details. | ||
| You should have received a copy of the GNU Lesser General Public | ||
| License along with the GNU C Library; if not, see | ||
| <http://www.gnu.org/licenses/>. */ | ||
|
|
||
| /* This file must be compiled as PIE to avoid copy relocation when | ||
| accessing protected symbols defined in shared libaries since copy | ||
| relocation doesn't work with protected symbols and linker in | ||
| binutils 2.26 enforces this rule. */ | ||
|
|
||
| #include <stdio.h> | ||
| #include <stdlib.h> | ||
| #include <string.h> | ||
|
|
||
| #include "tst-protected1mod.h" | ||
|
|
||
| /* Prototype for our test function. */ | ||
| extern int do_test (void); | ||
|
|
||
| int protected2 = -1; | ||
|
|
||
| #define TEST_FUNCTION do_test () | ||
|
|
||
| /* This defines the `main' function and some more. */ | ||
| #include <test-skeleton.c> | ||
|
|
||
| int | ||
| do_test (void) | ||
| { | ||
| int res = 0; | ||
|
|
||
| /* Check if we get the same address for the protected data symbol. */ | ||
| if (&protected1 != protected1a_p ()) | ||
| { | ||
| puts ("`protected1' in main and moda doesn't have same address"); | ||
| res = 1; | ||
| } | ||
| if (&protected1 != protected1b_p ()) | ||
| { | ||
| puts ("`protected1' in main and modb doesn't have same address"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the right value for the protected data symbol. */ | ||
| if (protected1 != 3) | ||
| { | ||
| puts ("`protected1' in main and moda doesn't have same value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the right value for data defined in executable. */ | ||
| if (protected2 != -1) | ||
| { | ||
| puts ("`protected2' in main has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check `protected1' in moda. */ | ||
| if (!check_protected1 ()) | ||
| { | ||
| puts ("`protected1' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check `protected2' in moda. */ | ||
| if (!check_protected2 ()) | ||
| { | ||
| puts ("`protected2' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the same address for the protected data symbol. */ | ||
| if (&protected3 != protected3a_p ()) | ||
| { | ||
| puts ("`protected3' in main and moda doesn't have same address"); | ||
| res = 1; | ||
| } | ||
| if (&protected3 == protected3b_p ()) | ||
| { | ||
| puts ("`protected3' in main and modb has same address"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the right value for the protected data symbol. */ | ||
| if (protected3 != 5) | ||
| { | ||
| puts ("`protected3' in main and moda doesn't have same value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check `protected3' in moda. */ | ||
| if (!check_protected3a ()) | ||
| { | ||
| puts ("`protected3' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check `protected3' in modb. */ | ||
| if (!check_protected3b ()) | ||
| { | ||
| puts ("`protected3' in modb has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Set `protected2' in moda to 30. */ | ||
| set_protected2 (300); | ||
|
|
||
| /* Check `protected2' in moda. */ | ||
| if (!check_protected2 ()) | ||
| { | ||
| puts ("`protected2' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Set `protected1' in moda to 30. */ | ||
| set_protected1a (30); | ||
|
|
||
| /* Check `protected1' in moda. */ | ||
| if (!check_protected1 ()) | ||
| { | ||
| puts ("`protected1' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the updated value for the protected data symbol. */ | ||
| if (protected1 != 30) | ||
| { | ||
| puts ("`protected1' in main doesn't have the updated value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| protected2 = -300; | ||
|
|
||
| /* Check `protected2' in moda. */ | ||
| if (!check_protected2 ()) | ||
| { | ||
| puts ("`protected2' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if data defined in executable is changed. */ | ||
| if (protected2 != -300) | ||
| { | ||
| puts ("`protected2' in main is changed"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Set `protected1' in modb to 40. */ | ||
| set_protected1b (40); | ||
| set_expected_protected1 (40); | ||
|
|
||
| /* Check `protected1' in moda. */ | ||
| if (!check_protected1 ()) | ||
| { | ||
| puts ("`protected1' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the updated value for the protected data symbol. */ | ||
| if (protected1 != 40) | ||
| { | ||
| puts ("`protected1' in main doesn't have the updated value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Set `protected3' in moda to 80. */ | ||
| set_protected3a (80); | ||
|
|
||
| /* Check `protected3' in moda. */ | ||
| if (!check_protected3a ()) | ||
| { | ||
| puts ("`protected3' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the updated value for the protected data symbol. */ | ||
| if (protected3 != 80) | ||
| { | ||
| puts ("`protected3' in main doesn't have the updated value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check `protected3' in modb. */ | ||
| if (!check_protected3b ()) | ||
| { | ||
| puts ("`protected3' in modb has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Set `protected3' in modb to 100. */ | ||
| set_protected3b (100); | ||
|
|
||
| /* Check `protected3' in moda. */ | ||
| if (!check_protected3a ()) | ||
| { | ||
| puts ("`protected3' in moda has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check if we get the updated value for the protected data symbol. */ | ||
| if (protected3 != 80) | ||
| { | ||
| puts ("`protected3' in main doesn't have the updated value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| /* Check `protected3' in modb. */ | ||
| if (!check_protected3b ()) | ||
| { | ||
| puts ("`protected3' in modb has the wrong value"); | ||
| res = 1; | ||
| } | ||
|
|
||
| return res; | ||
| } |
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