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7#ifndef INCLUDE__INTEL_PT_DECODER_H__
8#define INCLUDE__INTEL_PT_DECODER_H__
9
10#include <stdint.h>
11#include <stddef.h>
12#include <stdbool.h>
13
14#include <linux/rbtree.h>
15
16#include "intel-pt-insn-decoder.h"
17
18#define INTEL_PT_IN_TX (1 << 0)
19#define INTEL_PT_ABORT_TX (1 << 1)
20#define INTEL_PT_IFLAG (1 << 2)
21#define INTEL_PT_ASYNC (1 << 2)
22#define INTEL_PT_FUP_IP (1 << 3)
23#define INTEL_PT_SAMPLE_IPC (1 << 4)
24
25enum intel_pt_sample_type {
26 INTEL_PT_BRANCH = 1 << 0,
27 INTEL_PT_INSTRUCTION = 1 << 1,
28 INTEL_PT_TRANSACTION = 1 << 2,
29 INTEL_PT_PTW = 1 << 3,
30 INTEL_PT_MWAIT_OP = 1 << 4,
31 INTEL_PT_PWR_ENTRY = 1 << 5,
32 INTEL_PT_EX_STOP = 1 << 6,
33 INTEL_PT_PWR_EXIT = 1 << 7,
34 INTEL_PT_CBR_CHG = 1 << 8,
35 INTEL_PT_TRACE_BEGIN = 1 << 9,
36 INTEL_PT_TRACE_END = 1 << 10,
37 INTEL_PT_BLK_ITEMS = 1 << 11,
38 INTEL_PT_PSB_EVT = 1 << 12,
39 INTEL_PT_EVT = 1 << 13,
40 INTEL_PT_IFLAG_CHG = 1 << 14,
41};
42
43enum intel_pt_period_type {
44 INTEL_PT_PERIOD_NONE,
45 INTEL_PT_PERIOD_INSTRUCTIONS,
46 INTEL_PT_PERIOD_TICKS,
47 INTEL_PT_PERIOD_MTC,
48};
49
50enum {
51 INTEL_PT_ERR_NOMEM = 1,
52 INTEL_PT_ERR_INTERN,
53 INTEL_PT_ERR_BADPKT,
54 INTEL_PT_ERR_NODATA,
55 INTEL_PT_ERR_NOINSN,
56 INTEL_PT_ERR_MISMAT,
57 INTEL_PT_ERR_OVR,
58 INTEL_PT_ERR_LOST,
59 INTEL_PT_ERR_UNK,
60 INTEL_PT_ERR_NELOOP,
61 INTEL_PT_ERR_MAX,
62};
63
64enum intel_pt_param_flags {
65
66
67
68
69 INTEL_PT_FUP_WITH_NLIP = 1 << 0,
70};
71
72enum intel_pt_blk_type {
73 INTEL_PT_GP_REGS = 1,
74 INTEL_PT_PEBS_BASIC = 4,
75 INTEL_PT_PEBS_MEM = 5,
76 INTEL_PT_LBR_0 = 8,
77 INTEL_PT_LBR_1 = 9,
78 INTEL_PT_LBR_2 = 10,
79 INTEL_PT_XMM = 16,
80 INTEL_PT_BLK_TYPE_MAX
81};
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86
87enum intel_pt_blk_type_pos {
88 INTEL_PT_GP_REGS_POS,
89 INTEL_PT_PEBS_BASIC_POS,
90 INTEL_PT_PEBS_MEM_POS,
91 INTEL_PT_LBR_0_POS,
92 INTEL_PT_LBR_1_POS,
93 INTEL_PT_LBR_2_POS,
94 INTEL_PT_XMM_POS,
95 INTEL_PT_BLK_TYPE_CNT
96};
97
98
99static inline int intel_pt_blk_type_pos(enum intel_pt_blk_type blk_type)
100{
101#define BLK_TYPE(bt) [INTEL_PT_##bt] = INTEL_PT_##bt##_POS + 1
102 const int map[INTEL_PT_BLK_TYPE_MAX] = {
103 BLK_TYPE(GP_REGS),
104 BLK_TYPE(PEBS_BASIC),
105 BLK_TYPE(PEBS_MEM),
106 BLK_TYPE(LBR_0),
107 BLK_TYPE(LBR_1),
108 BLK_TYPE(LBR_2),
109 BLK_TYPE(XMM),
110 };
111#undef BLK_TYPE
112
113 return blk_type < INTEL_PT_BLK_TYPE_MAX ? map[blk_type] - 1 : -1;
114}
115
116#define INTEL_PT_BLK_ITEM_ID_CNT 32
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122
123struct intel_pt_blk_items {
124 union {
125 uint32_t mask[INTEL_PT_BLK_TYPE_CNT];
126 struct {
127 uint32_t has_rflags:1;
128 uint32_t has_rip:1;
129 uint32_t has_rax:1;
130 uint32_t has_rcx:1;
131 uint32_t has_rdx:1;
132 uint32_t has_rbx:1;
133 uint32_t has_rsp:1;
134 uint32_t has_rbp:1;
135 uint32_t has_rsi:1;
136 uint32_t has_rdi:1;
137 uint32_t has_r8:1;
138 uint32_t has_r9:1;
139 uint32_t has_r10:1;
140 uint32_t has_r11:1;
141 uint32_t has_r12:1;
142 uint32_t has_r13:1;
143 uint32_t has_r14:1;
144 uint32_t has_r15:1;
145 uint32_t has_unused_0:14;
146 uint32_t has_ip:1;
147 uint32_t has_applicable_counters:1;
148 uint32_t has_timestamp:1;
149 uint32_t has_unused_1:29;
150 uint32_t has_mem_access_address:1;
151 uint32_t has_mem_aux_info:1;
152 uint32_t has_mem_access_latency:1;
153 uint32_t has_tsx_aux_info:1;
154 uint32_t has_unused_2:28;
155 uint32_t has_lbr_0;
156 uint32_t has_lbr_1;
157 uint32_t has_lbr_2;
158 uint32_t has_xmm;
159 };
160 };
161 union {
162 uint64_t val[INTEL_PT_BLK_TYPE_CNT][INTEL_PT_BLK_ITEM_ID_CNT];
163 struct {
164 struct {
165 uint64_t rflags;
166 uint64_t rip;
167 uint64_t rax;
168 uint64_t rcx;
169 uint64_t rdx;
170 uint64_t rbx;
171 uint64_t rsp;
172 uint64_t rbp;
173 uint64_t rsi;
174 uint64_t rdi;
175 uint64_t r8;
176 uint64_t r9;
177 uint64_t r10;
178 uint64_t r11;
179 uint64_t r12;
180 uint64_t r13;
181 uint64_t r14;
182 uint64_t r15;
183 uint64_t unused_0[INTEL_PT_BLK_ITEM_ID_CNT - 18];
184 };
185 struct {
186 uint64_t ip;
187 uint64_t applicable_counters;
188 uint64_t timestamp;
189 uint64_t unused_1[INTEL_PT_BLK_ITEM_ID_CNT - 3];
190 };
191 struct {
192 uint64_t mem_access_address;
193 uint64_t mem_aux_info;
194 uint64_t mem_access_latency;
195 uint64_t tsx_aux_info;
196 uint64_t unused_2[INTEL_PT_BLK_ITEM_ID_CNT - 4];
197 };
198 uint64_t lbr_0[INTEL_PT_BLK_ITEM_ID_CNT];
199 uint64_t lbr_1[INTEL_PT_BLK_ITEM_ID_CNT];
200 uint64_t lbr_2[INTEL_PT_BLK_ITEM_ID_CNT];
201 uint64_t xmm[INTEL_PT_BLK_ITEM_ID_CNT];
202 };
203 };
204 bool is_32_bit;
205};
206
207struct intel_pt_vmcs_info {
208 struct rb_node rb_node;
209 uint64_t vmcs;
210 uint64_t tsc_offset;
211 bool reliable;
212 bool error_printed;
213};
214
215
216
217
218
219#define INTEL_PT_MAX_EVDS 64
220
221
222struct intel_pt_evd {
223 int type;
224 uint64_t payload;
225};
226
227struct intel_pt_state {
228 enum intel_pt_sample_type type;
229 bool from_nr;
230 bool to_nr;
231 bool from_iflag;
232 bool to_iflag;
233 int err;
234 uint64_t from_ip;
235 uint64_t to_ip;
236 uint64_t tot_insn_cnt;
237 uint64_t tot_cyc_cnt;
238 uint64_t cycles;
239 uint64_t timestamp;
240 uint64_t est_timestamp;
241 uint64_t trace_nr;
242 uint64_t ptw_payload;
243 uint64_t mwait_payload;
244 uint64_t pwre_payload;
245 uint64_t pwrx_payload;
246 uint64_t cbr_payload;
247 uint64_t psb_offset;
248 uint32_t cbr;
249 uint32_t flags;
250 enum intel_pt_insn_op insn_op;
251 int insn_len;
252 char insn[INTEL_PT_INSN_BUF_SZ];
253 struct intel_pt_blk_items items;
254 int cfe_type;
255 int cfe_vector;
256 int evd_cnt;
257 struct intel_pt_evd *evd;
258};
259
260struct intel_pt_insn;
261
262struct intel_pt_buffer {
263 const unsigned char *buf;
264 size_t len;
265 bool consecutive;
266 uint64_t ref_timestamp;
267 uint64_t trace_nr;
268};
269
270typedef int (*intel_pt_lookahead_cb_t)(struct intel_pt_buffer *, void *);
271
272struct intel_pt_params {
273 int (*get_trace)(struct intel_pt_buffer *buffer, void *data);
274 int (*walk_insn)(struct intel_pt_insn *intel_pt_insn,
275 uint64_t *insn_cnt_ptr, uint64_t *ip, uint64_t to_ip,
276 uint64_t max_insn_cnt, void *data);
277 bool (*pgd_ip)(uint64_t ip, void *data);
278 int (*lookahead)(void *data, intel_pt_lookahead_cb_t cb, void *cb_data);
279 struct intel_pt_vmcs_info *(*findnew_vmcs_info)(void *data, uint64_t vmcs);
280 void *data;
281 bool return_compression;
282 bool branch_enable;
283 bool vm_time_correlation;
284 bool vm_tm_corr_dry_run;
285 uint64_t first_timestamp;
286 uint64_t ctl;
287 uint64_t period;
288 enum intel_pt_period_type period_type;
289 unsigned max_non_turbo_ratio;
290 unsigned int mtc_period;
291 uint32_t tsc_ctc_ratio_n;
292 uint32_t tsc_ctc_ratio_d;
293 enum intel_pt_param_flags flags;
294 unsigned int quick;
295 int max_loops;
296};
297
298struct intel_pt_decoder;
299
300struct intel_pt_decoder *intel_pt_decoder_new(struct intel_pt_params *params);
301void intel_pt_decoder_free(struct intel_pt_decoder *decoder);
302
303const struct intel_pt_state *intel_pt_decode(struct intel_pt_decoder *decoder);
304
305int intel_pt_fast_forward(struct intel_pt_decoder *decoder, uint64_t timestamp);
306
307unsigned char *intel_pt_find_overlap(unsigned char *buf_a, size_t len_a,
308 unsigned char *buf_b, size_t len_b,
309 bool have_tsc, bool *consecutive,
310 bool ooo_tsc);
311
312int intel_pt__strerror(int code, char *buf, size_t buflen);
313
314void intel_pt_set_first_timestamp(struct intel_pt_decoder *decoder,
315 uint64_t first_timestamp);
316
317#endif
318
