1 /* SPDX-License-Identifier: GPL-2.0-or-later */
2 /*
3 * Copyright (C) 2015 Josh Poimboeuf <jpoimboe@redhat.com>
4 */
5
6 #ifndef _ARCH_H
7 #define _ARCH_H
8
9 #include <stdbool.h>
10 #include <linux/list.h>
11 #include "objtool.h"
12 #include "cfi.h"
13
14 #include <asm/orc_types.h>
15
16 enum insn_type {
17 INSN_JUMP_CONDITIONAL,
18 INSN_JUMP_UNCONDITIONAL,
19 INSN_JUMP_DYNAMIC,
20 INSN_JUMP_DYNAMIC_CONDITIONAL,
21 INSN_CALL,
22 INSN_CALL_DYNAMIC,
23 INSN_RETURN,
24 INSN_CONTEXT_SWITCH,
25 INSN_BUG,
26 INSN_NOP,
27 INSN_STAC,
28 INSN_CLAC,
29 INSN_STD,
30 INSN_CLD,
31 INSN_OTHER,
32 };
33
34 enum op_dest_type {
35 OP_DEST_REG,
36 OP_DEST_REG_INDIRECT,
37 OP_DEST_MEM,
38 OP_DEST_PUSH,
39 OP_DEST_PUSHF,
40 OP_DEST_LEAVE,
41 };
42
43 struct op_dest {
44 enum op_dest_type type;
45 unsigned char reg;
46 int offset;
47 };
48
49 enum op_src_type {
50 OP_SRC_REG,
51 OP_SRC_REG_INDIRECT,
52 OP_SRC_CONST,
53 OP_SRC_POP,
54 OP_SRC_POPF,
55 OP_SRC_ADD,
56 OP_SRC_AND,
57 };
58
59 struct op_src {
60 enum op_src_type type;
61 unsigned char reg;
62 int offset;
63 };
64
65 struct stack_op {
66 struct op_dest dest;
67 struct op_src src;
68 struct list_head list;
69 };
70
71 struct instruction;
72
73 void arch_initial_func_cfi_state(struct cfi_init_state *state);
74
75 int arch_decode_instruction(const struct elf *elf, const struct section *sec,
76 unsigned long offset, unsigned int maxlen,
77 unsigned int *len, enum insn_type *type,
78 unsigned long *immediate,
79 struct list_head *ops_list);
80
81 bool arch_callee_saved_reg(unsigned char reg);
82
83 unsigned long arch_jump_destination(struct instruction *insn);
84
85 unsigned long arch_dest_reloc_offset(int addend);
86
87 const char *arch_nop_insn(int len);
88
89 #endif /* _ARCH_H */
90
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