derek.holloway
7502bf64a4
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96 lines
3.2 KiB
C
96 lines
3.2 KiB
C
/* x86-specific ELF linker support between ld and bfd.
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Copyright (C) 2019-2024 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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/* Missing IBT, SHSTK and LAM property report control. */
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enum elf_x86_prop_report
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{
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prop_report_none = 0, /* Do nothing. */
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prop_report_warning = 1 << 0, /* Issue a warning. */
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prop_report_error = 1 << 1, /* Issue an error. */
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prop_report_ibt = 1 << 2, /* Report missing IBT property. */
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prop_report_shstk = 1 << 3 /* Report missing SHSTK property. */
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};
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/* ISA level report control. */
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enum elf_x86_isa_level_report
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{
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isa_level_report_none = 0, /* Do nothing. */
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isa_level_report_needed = 1 << 0, /* Needed x86-64 ISA level. */
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isa_level_report_used = 1 << 1 /* Used x86-64 ISA level. */
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};
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/* Used to pass x86-specific linker options from ld to bfd. */
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struct elf_linker_x86_params
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{
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/* TRUE if IBT-enabled PLT entries should be generated. */
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unsigned int ibtplt: 1;
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/* TRUE if GNU_PROPERTY_X86_FEATURE_1_IBT should be generated. */
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unsigned int ibt: 1;
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/* TRUE if GNU_PROPERTY_X86_FEATURE_1_SHSTK should be generated. */
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unsigned int shstk: 1;
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/* TRUE if GNU_PROPERTY_X86_FEATURE_1_LAM_U48 should be generated. */
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unsigned int lam_u48: 1;
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/* TRUE if GNU_PROPERTY_X86_FEATURE_1_LAM_U57 should be generated. */
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unsigned int lam_u57: 1;
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/* TRUE if we shouldn't check relocation overflow. */
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unsigned int no_reloc_overflow_check: 1;
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/* TRUE if generate a 1-byte NOP as suffix for x86 call instruction. */
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unsigned int call_nop_as_suffix : 1;
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/* TRUE if -static is passed at command-line before all input files. */
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unsigned int static_before_all_inputs : 1;
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/* TRUE if --dynamic-linker is passed at command-line. */
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unsigned int has_dynamic_linker : 1;
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/* Report relative relocations. */
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unsigned int report_relative_reloc : 1;
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/* Mark PLT with dynamic tags. */
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unsigned int mark_plt : 1;
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/* X86-64 ISA level needed. */
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unsigned int isa_level;
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/* Report needed and used x86-64 ISA levels. */
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enum elf_x86_isa_level_report isa_level_report;
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/* Report missing IBT and SHSTK properties. */
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enum elf_x86_prop_report cet_report;
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/* Report missing LAM_U48 property. */
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enum elf_x86_prop_report lam_u48_report;
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/* Report missing LAM_U57 property. */
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enum elf_x86_prop_report lam_u57_report;
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/* The 1-byte NOP for x86 call instruction. */
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char call_nop_byte;
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};
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extern void _bfd_elf_linker_x86_set_options
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(struct bfd_link_info *, struct elf_linker_x86_params *);
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