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