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
16enum 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
34enum 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
43struct op_dest {
44	enum op_dest_type type;
45	unsigned char reg;
46	int offset;
47};
48
49enum 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
59struct op_src {
60	enum op_src_type type;
61	unsigned char reg;
62	int offset;
63};
64
65struct stack_op {
66	struct op_dest dest;
67	struct op_src src;
68	struct list_head list;
69};
70
71struct instruction;
72
73void arch_initial_func_cfi_state(struct cfi_init_state *state);
74
75int 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
81bool arch_callee_saved_reg(unsigned char reg);
82
83unsigned long arch_jump_destination(struct instruction *insn);
84
85unsigned long arch_dest_reloc_offset(int addend);
86
87const char *arch_nop_insn(int len);
88
89#endif /* _ARCH_H */