1*fae548d3Szrj /* x86-specific ELF linker support between ld and bfd. 2*fae548d3Szrj Copyright (C) 2019-2020 Free Software Foundation, Inc. 3*fae548d3Szrj 4*fae548d3Szrj This file is part of BFD, the Binary File Descriptor library. 5*fae548d3Szrj 6*fae548d3Szrj This program is free software; you can redistribute it and/or modify 7*fae548d3Szrj it under the terms of the GNU General Public License as published by 8*fae548d3Szrj the Free Software Foundation; either version 3 of the License, or 9*fae548d3Szrj (at your option) any later version. 10*fae548d3Szrj 11*fae548d3Szrj This program is distributed in the hope that it will be useful, 12*fae548d3Szrj but WITHOUT ANY WARRANTY; without even the implied warranty of 13*fae548d3Szrj MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14*fae548d3Szrj GNU General Public License for more details. 15*fae548d3Szrj 16*fae548d3Szrj You should have received a copy of the GNU General Public License 17*fae548d3Szrj along with this program; if not, write to the Free Software 18*fae548d3Szrj Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19*fae548d3Szrj MA 02110-1301, USA. */ 20*fae548d3Szrj 21*fae548d3Szrj /* Missing IBT and SHSTK property report control. */ 22*fae548d3Szrj enum elf_x86_cet_report 23*fae548d3Szrj { 24*fae548d3Szrj cet_report_none = 0, /* Do nothing. */ 25*fae548d3Szrj cet_report_warning = 1 << 0, /* Issue a warning. */ 26*fae548d3Szrj cet_report_error = 1 << 1, /* Issue an error. */ 27*fae548d3Szrj cet_report_ibt = 1 << 2, /* Report missing IBT property. */ 28*fae548d3Szrj cet_report_shstk = 1 << 3 /* Report missing SHSTK property. */ 29*fae548d3Szrj }; 30*fae548d3Szrj 31*fae548d3Szrj /* Used to pass x86-specific linker options from ld to bfd. */ 32*fae548d3Szrj struct elf_linker_x86_params 33*fae548d3Szrj { 34*fae548d3Szrj /* TRUE if BND prefix in PLT entries is always generated. */ 35*fae548d3Szrj unsigned int bndplt: 1; 36*fae548d3Szrj 37*fae548d3Szrj /* TRUE if IBT-enabled PLT entries should be generated. */ 38*fae548d3Szrj unsigned int ibtplt: 1; 39*fae548d3Szrj 40*fae548d3Szrj /* TRUE if GNU_PROPERTY_X86_FEATURE_1_IBT should be generated. */ 41*fae548d3Szrj unsigned int ibt: 1; 42*fae548d3Szrj 43*fae548d3Szrj /* TRUE if GNU_PROPERTY_X86_FEATURE_1_SHSTK should be generated. */ 44*fae548d3Szrj unsigned int shstk: 1; 45*fae548d3Szrj 46*fae548d3Szrj /* TRUE if we shouldn't check relocation overflow. */ 47*fae548d3Szrj unsigned int no_reloc_overflow_check: 1; 48*fae548d3Szrj 49*fae548d3Szrj /* TRUE if generate a 1-byte NOP as suffix for x86 call instruction. */ 50*fae548d3Szrj unsigned int call_nop_as_suffix : 1; 51*fae548d3Szrj 52*fae548d3Szrj /* Report missing IBT and SHSTK properties. */ 53*fae548d3Szrj enum elf_x86_cet_report cet_report; 54*fae548d3Szrj 55*fae548d3Szrj /* The 1-byte NOP for x86 call instruction. */ 56*fae548d3Szrj char call_nop_byte; 57*fae548d3Szrj }; 58*fae548d3Szrj 59*fae548d3Szrj extern void _bfd_elf_linker_x86_set_options 60*fae548d3Szrj (struct bfd_link_info *, struct elf_linker_x86_params *); 61