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8308fd0019
Add a function to get the name of a CPU feature. The function is architecture dependent and currently only implemented for x86. The feature names are automatically generated from the cpufeatures.h include file. Signed-off-by: Alexandre Chartre <alexandre.chartre@oracle.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Acked-by: Josh Poimboeuf <jpoimboe@kernel.org> Link: https://patch.msgid.link/20251121095340.464045-27-alexandre.chartre@oracle.com
44 lines
1008 B
C
44 lines
1008 B
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
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*/
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#ifndef _SPECIAL_H
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#define _SPECIAL_H
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#include <stdbool.h>
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#include <objtool/check.h>
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#include <objtool/elf.h>
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#define C_JUMP_TABLE_SECTION ".data.rel.ro.c_jump_table"
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struct special_alt {
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struct list_head list;
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bool group;
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bool jump_or_nop;
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u8 key_addend;
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struct section *orig_sec;
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unsigned long orig_off;
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struct section *new_sec;
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unsigned long new_off;
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unsigned int orig_len, new_len, feature; /* group only */
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};
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int special_get_alts(struct elf *elf, struct list_head *alts);
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void arch_handle_alternative(struct special_alt *alt);
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bool arch_support_alt_relocation(struct special_alt *special_alt,
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struct instruction *insn,
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struct reloc *reloc);
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struct reloc *arch_find_switch_table(struct objtool_file *file,
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struct instruction *insn,
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unsigned long *table_size);
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const char *arch_cpu_feature_name(int feature_number);
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#endif /* _SPECIAL_H */
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