| 1 | /* Check that legacy shadow stack code in init_array will trigger |
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| 2 | segfault. |
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| 3 | Copyright (C) 2023-2024 Free Software Foundation, Inc. |
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| 4 | This file is part of the GNU C Library. |
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| 5 | |
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| 6 | The GNU C Library is free software; you can redistribute it and/or |
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| 7 | modify it under the terms of the GNU Lesser General Public |
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| 8 | License as published by the Free Software Foundation; either |
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| 9 | version 2.1 of the License, or (at your option) any later version. |
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| 10 | |
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| 11 | The GNU C Library is distributed in the hope that it will be useful, |
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| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
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| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
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| 14 | Lesser General Public License for more details. |
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| 15 | |
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| 16 | You should have received a copy of the GNU Lesser General Public |
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| 17 | License along with the GNU C Library; if not, see |
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| 18 | <https://www.gnu.org/licenses/>. */ |
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| 19 | |
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| 20 | #include <stdlib.h> |
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| 21 | #include <sys/platform/x86.h> |
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| 22 | #include <support/test-driver.h> |
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| 23 | #include <support/xsignal.h> |
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| 24 | |
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| 25 | /* Check that legacy shadow stack code in init_array will trigger |
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| 26 | segfault. */ |
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| 27 | extern void legacy (void); |
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| 28 | int done; |
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| 29 | |
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| 30 | void |
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| 31 | legacy_1 (void) |
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| 32 | { |
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| 33 | legacy (); |
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| 34 | done = 1; |
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| 35 | } |
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| 36 | |
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| 37 | void (*init_array []) (void) |
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| 38 | __attribute__ ((section (".init_array" ), aligned (sizeof (void *)))) = |
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| 39 | { |
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| 40 | &legacy_1 |
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| 41 | }; |
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| 42 | |
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| 43 | static int |
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| 44 | do_test (void) |
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| 45 | { |
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| 46 | if (!CPU_FEATURE_ACTIVE (SHSTK)) |
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| 47 | return EXIT_UNSUPPORTED; |
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| 48 | |
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| 49 | return EXIT_FAILURE; |
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| 50 | } |
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| 51 | |
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| 52 | #define EXPECTED_SIGNAL (CPU_FEATURE_ACTIVE (SHSTK) ? SIGSEGV : 0) |
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| 53 | #include <support/test-driver.c> |
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| 54 | |
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