1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3 * Copyright (C) 2017 Josh Poimboeuf <jpoimboe@redhat.com>
10 #include <objtool/cfi.h>
11 #include <objtool/arch.h>
15 unsigned int uaccess_stack;
24 * Pointer from a replacement group to the original group. NULL if it
25 * *is* the original group.
27 struct alt_group *orig_group;
29 /* First and last instructions in the group */
30 struct instruction *first_insn, *last_insn, *nop;
33 * Byte-offset-addressed len-sized array of pointers to CFI structs.
34 * This is shared with the other alt_groups in the same alternative.
36 struct cfi_state **cfi;
39 #define INSN_CHUNK_BITS 8
40 #define INSN_CHUNK_SIZE (1 << INSN_CHUNK_BITS)
41 #define INSN_CHUNK_MAX (INSN_CHUNK_SIZE - 1)
44 struct hlist_node hash;
45 struct list_head call_node;
48 unsigned long immediate;
55 u32 idx : INSN_CHUNK_BITS,
69 struct alt_group *alt_group;
70 struct instruction *jump_dest;
71 struct instruction *first_jump_src;
73 struct symbol *_call_dest;
74 struct reloc *_jump_table;
76 struct alternative *alts;
78 struct stack_op *stack_ops;
79 struct cfi_state *cfi;
82 static inline struct symbol *insn_func(struct instruction *insn)
84 struct symbol *sym = insn->sym;
86 if (sym && sym->type != STT_FUNC)
92 #define VISITED_BRANCH 0x01
93 #define VISITED_BRANCH_UACCESS 0x02
94 #define VISITED_BRANCH_MASK 0x03
95 #define VISITED_UNRET 0x04
97 static inline bool is_static_jump(struct instruction *insn)
99 return insn->type == INSN_JUMP_CONDITIONAL ||
100 insn->type == INSN_JUMP_UNCONDITIONAL;
103 static inline bool is_dynamic_jump(struct instruction *insn)
105 return insn->type == INSN_JUMP_DYNAMIC ||
106 insn->type == INSN_JUMP_DYNAMIC_CONDITIONAL;
109 static inline bool is_jump(struct instruction *insn)
111 return is_static_jump(insn) || is_dynamic_jump(insn);
114 struct instruction *find_insn(struct objtool_file *file,
115 struct section *sec, unsigned long offset);
117 struct instruction *next_insn_same_sec(struct objtool_file *file, struct instruction *insn);
119 #define sec_for_each_insn(file, _sec, insn) \
120 for (insn = find_insn(file, _sec, 0); \
121 insn && insn->sec == _sec; \
122 insn = next_insn_same_sec(file, insn))
124 #endif /* _CHECK_H */