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1 /*
2  * intel_pt_insn_decoder.h: Intel Processor Trace support
3  * Copyright (c) 2013-2014, Intel Corporation.
4  *
5  * This program is free software; you can redistribute it and/or modify it
6  * under the terms and conditions of the GNU General Public License,
7  * version 2, as published by the Free Software Foundation.
8  *
9  * This program is distributed in the hope it will be useful, but WITHOUT
10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
12  * more details.
13  *
14  */
15 
16 #ifndef INCLUDE__INTEL_PT_INSN_DECODER_H__
17 #define INCLUDE__INTEL_PT_INSN_DECODER_H__
18 
19 #include <stddef.h>
20 #include <stdint.h>
21 
22 #define INTEL_PT_INSN_DESC_MAX		32
23 #define INTEL_PT_INSN_DBG_BUF_SZ	16
24 
25 enum intel_pt_insn_op {
26 	INTEL_PT_OP_OTHER,
27 	INTEL_PT_OP_CALL,
28 	INTEL_PT_OP_RET,
29 	INTEL_PT_OP_JCC,
30 	INTEL_PT_OP_JMP,
31 	INTEL_PT_OP_LOOP,
32 	INTEL_PT_OP_IRET,
33 	INTEL_PT_OP_INT,
34 	INTEL_PT_OP_SYSCALL,
35 	INTEL_PT_OP_SYSRET,
36 };
37 
38 enum intel_pt_insn_branch {
39 	INTEL_PT_BR_NO_BRANCH,
40 	INTEL_PT_BR_INDIRECT,
41 	INTEL_PT_BR_CONDITIONAL,
42 	INTEL_PT_BR_UNCONDITIONAL,
43 };
44 
45 struct intel_pt_insn {
46 	enum intel_pt_insn_op		op;
47 	enum intel_pt_insn_branch	branch;
48 	int				length;
49 	int32_t				rel;
50 	unsigned char			buf[INTEL_PT_INSN_DBG_BUF_SZ];
51 };
52 
53 int intel_pt_get_insn(const unsigned char *buf, size_t len, int x86_64,
54 		      struct intel_pt_insn *intel_pt_insn);
55 
56 const char *intel_pt_insn_name(enum intel_pt_insn_op op);
57 
58 int intel_pt_insn_desc(const struct intel_pt_insn *intel_pt_insn, char *buf,
59 		       size_t buf_len);
60 
61 size_t intel_pt_insn_max_size(void);
62 
63 int intel_pt_insn_type(enum intel_pt_insn_op op);
64 
65 #endif
66