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 "elf.h"
12 #include "cfi.h"
13
14 #define INSN_JUMP_CONDITIONAL 1
15 #define INSN_JUMP_UNCONDITIONAL 2
16 #define INSN_JUMP_DYNAMIC 3
17 #define INSN_CALL 4
18 #define INSN_CALL_DYNAMIC 5
19 #define INSN_RETURN 6
20 #define INSN_CONTEXT_SWITCH 7
21 #define INSN_STACK 8
22 #define INSN_BUG 9
23 #define INSN_NOP 10
24 #define INSN_STAC 11
25 #define INSN_CLAC 12
26 #define INSN_STD 13
27 #define INSN_CLD 14
28 #define INSN_OTHER 15
29 #define INSN_LAST INSN_OTHER
30
31 enum op_dest_type {
32 OP_DEST_REG,
33 OP_DEST_REG_INDIRECT,
34 OP_DEST_MEM,
35 OP_DEST_PUSH,
36 OP_DEST_PUSHF,
37 OP_DEST_LEAVE,
38 };
39
40 struct op_dest {
41 enum op_dest_type type;
42 unsigned char reg;
43 int offset;
44 };
45
46 enum op_src_type {
47 OP_SRC_REG,
48 OP_SRC_REG_INDIRECT,
49 OP_SRC_CONST,
50 OP_SRC_POP,
51 OP_SRC_POPF,
52 OP_SRC_ADD,
53 OP_SRC_AND,
54 };
55
56 struct op_src {
57 enum op_src_type type;
58 unsigned char reg;
59 int offset;
60 };
61
62 struct stack_op {
63 struct op_dest dest;
64 struct op_src src;
65 };
66
67 void arch_initial_func_cfi_state(struct cfi_state *state);
68
69 int arch_decode_instruction(struct elf *elf, struct section *sec,
70 unsigned long offset, unsigned int maxlen,
71 unsigned int *len, unsigned char *type,
72 unsigned long *immediate, struct stack_op *op);
73
74 bool arch_callee_saved_reg(unsigned char reg);
75
76 #endif /* _ARCH_H */
77
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