/* Test CET property note parser. Copyright (C) 2018-2024 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 . */ #include #include #include /* This test prints out "IBT" if Intel indirect branch tracking (IBT) is enabled at run-time, which is checked by tst-cet-property-2 to verify that the IBT violation is caught on IBT machines. */ static int do_test (void) { unsigned int feature_1; #ifdef __x86_64__ # define SEG_REG "fs" #else # define SEG_REG "gs" #endif asm ("movl %%" SEG_REG ":%P1, %0" : "=r" (feature_1) : "i" (FEATURE_1_OFFSET)); if ((feature_1 & GNU_PROPERTY_X86_FEATURE_1_IBT) != 0) printf ("IBT\n"); return 0; } #include