1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /*
3  * intel_pt_insn_decoder.h: Intel Processor Trace support
4  * Copyright (c) 2013-2014, Intel Corporation.
5  */
6 
7 #ifndef INCLUDE__INTEL_PT_INSN_DECODER_H__
8 #define INCLUDE__INTEL_PT_INSN_DECODER_H__
9 
10 #include <stddef.h>
11 #include <stdint.h>
12 
13 #define INTEL_PT_INSN_DESC_MAX		32
14 #define INTEL_PT_INSN_BUF_SZ		16
15 
16 enum intel_pt_insn_op {
17 	INTEL_PT_OP_OTHER,
18 	INTEL_PT_OP_CALL,
19 	INTEL_PT_OP_RET,
20 	INTEL_PT_OP_JCC,
21 	INTEL_PT_OP_JMP,
22 	INTEL_PT_OP_LOOP,
23 	INTEL_PT_OP_IRET,
24 	INTEL_PT_OP_INT,
25 	INTEL_PT_OP_SYSCALL,
26 	INTEL_PT_OP_SYSRET,
27 	INTEL_PT_OP_VMENTRY,
28 };
29 
30 enum intel_pt_insn_branch {
31 	INTEL_PT_BR_NO_BRANCH,
32 	INTEL_PT_BR_INDIRECT,
33 	INTEL_PT_BR_CONDITIONAL,
34 	INTEL_PT_BR_UNCONDITIONAL,
35 };
36 
37 struct intel_pt_insn {
38 	enum intel_pt_insn_op		op;
39 	enum intel_pt_insn_branch	branch;
40 	bool				emulated_ptwrite;
41 	int				length;
42 	int32_t				rel;
43 	unsigned char			buf[INTEL_PT_INSN_BUF_SZ];
44 };
45 
46 int intel_pt_get_insn(const unsigned char *buf, size_t len, int x86_64,
47 		      struct intel_pt_insn *intel_pt_insn);
48 
49 const char *intel_pt_insn_name(enum intel_pt_insn_op op);
50 
51 int intel_pt_insn_desc(const struct intel_pt_insn *intel_pt_insn, char *buf,
52 		       size_t buf_len);
53 
54 int intel_pt_insn_type(enum intel_pt_insn_op op);
55 
56 #endif
57