projects / thirdparty / glibc.git / blame
| Commit | Line | Data |
|---|---|---|
| 98864ed0 | 1 | /* Test CET property note parser. |
| 2b778ceb | 2 | Copyright (C) 2018-2021 Free Software Foundation, Inc. |
| 98864ed0 L |
3 | This file is part of the GNU C Library. |
| 4 | ||
| 5 | The GNU C Library is free software; you can redistribute it and/or | |
| 6 | modify it under the terms of the GNU Lesser General Public | |
| 7 | License as published by the Free Software Foundation; either | |
| 8 | version 2.1 of the License, or (at your option) any later version. | |
| 9 | ||
| 10 | The GNU C Library is distributed in the hope that it will be useful, | |
| 11 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
| 13 | Lesser General Public License for more details. | |
| 14 | ||
| 15 | You should have received a copy of the GNU Lesser General Public | |
| 16 | License along with the GNU C Library; if not, see | |
| 5a82c748 | 17 | <https://www.gnu.org/licenses/>. */ |
| 98864ed0 L |
18 | |
| 19 | #include <stdio.h> | |
| 20 | #include <elf.h> | |
| 21 | #include <tcb-offsets.h> | |
| 22 | ||
| 23 | /* This test prints out "IBT" if Intel indirect branch tracking (IBT) | |
| 24 | is enabled at run-time, which is checked by tst-cet-property-2 to | |
| 25 | verify that the IBT violation is caught on IBT machines. */ | |
| 26 | ||
| 27 | static int | |
| 28 | do_test (void) | |
| 29 | { | |
| 30 | unsigned int feature_1; | |
| 31 | #ifdef __x86_64__ | |
| 32 | # define SEG_REG "fs" | |
| 33 | #else | |
| 34 | # define SEG_REG "gs" | |
| 35 | #endif | |
| 36 | asm ("movl %%" SEG_REG ":%P1, %0" | |
| 37 | : "=r" (feature_1) : "i" (FEATURE_1_OFFSET)); | |
| 38 | if ((feature_1 & GNU_PROPERTY_X86_FEATURE_1_IBT) != 0) | |
| 39 | printf ("IBT\n"); | |
| 40 | ||
| 41 | return 0; | |
| 42 | } | |
| 43 | ||
| 44 | #include <support/test-driver.c> |