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7#include <stdio.h>
8#include <string.h>
9#include <endian.h>
10#include <byteswap.h>
11#include <linux/compiler.h>
12
13#include "intel-pt-pkt-decoder.h"
14
15#define BIT(n) (1 << (n))
16
17#define BIT63 ((uint64_t)1 << 63)
18
19#define NR_FLAG BIT63
20
21#if __BYTE_ORDER == __BIG_ENDIAN
22#define le16_to_cpu bswap_16
23#define le32_to_cpu bswap_32
24#define le64_to_cpu bswap_64
25#define memcpy_le64(d, s, n) do { \
26 memcpy((d), (s), (n)); \
27 *(d) = le64_to_cpu(*(d)); \
28} while (0)
29#else
30#define le16_to_cpu
31#define le32_to_cpu
32#define le64_to_cpu
33#define memcpy_le64 memcpy
34#endif
35
36static const char * const packet_name[] = {
37 [INTEL_PT_BAD] = "Bad Packet!",
38 [INTEL_PT_PAD] = "PAD",
39 [INTEL_PT_TNT] = "TNT",
40 [INTEL_PT_TIP_PGD] = "TIP.PGD",
41 [INTEL_PT_TIP_PGE] = "TIP.PGE",
42 [INTEL_PT_TSC] = "TSC",
43 [INTEL_PT_TMA] = "TMA",
44 [INTEL_PT_MODE_EXEC] = "MODE.Exec",
45 [INTEL_PT_MODE_TSX] = "MODE.TSX",
46 [INTEL_PT_MTC] = "MTC",
47 [INTEL_PT_TIP] = "TIP",
48 [INTEL_PT_FUP] = "FUP",
49 [INTEL_PT_CYC] = "CYC",
50 [INTEL_PT_VMCS] = "VMCS",
51 [INTEL_PT_PSB] = "PSB",
52 [INTEL_PT_PSBEND] = "PSBEND",
53 [INTEL_PT_CBR] = "CBR",
54 [INTEL_PT_TRACESTOP] = "TraceSTOP",
55 [INTEL_PT_PIP] = "PIP",
56 [INTEL_PT_OVF] = "OVF",
57 [INTEL_PT_MNT] = "MNT",
58 [INTEL_PT_PTWRITE] = "PTWRITE",
59 [INTEL_PT_PTWRITE_IP] = "PTWRITE",
60 [INTEL_PT_EXSTOP] = "EXSTOP",
61 [INTEL_PT_EXSTOP_IP] = "EXSTOP",
62 [INTEL_PT_MWAIT] = "MWAIT",
63 [INTEL_PT_PWRE] = "PWRE",
64 [INTEL_PT_PWRX] = "PWRX",
65 [INTEL_PT_BBP] = "BBP",
66 [INTEL_PT_BIP] = "BIP",
67 [INTEL_PT_BEP] = "BEP",
68 [INTEL_PT_BEP_IP] = "BEP",
69};
70
71const char *intel_pt_pkt_name(enum intel_pt_pkt_type type)
72{
73 return packet_name[type];
74}
75
76static int intel_pt_get_long_tnt(const unsigned char *buf, size_t len,
77 struct intel_pt_pkt *packet)
78{
79 uint64_t payload;
80 int count;
81
82 if (len < 8)
83 return INTEL_PT_NEED_MORE_BYTES;
84
85 payload = le64_to_cpu(*(uint64_t *)buf);
86
87 for (count = 47; count; count--) {
88 if (payload & BIT63)
89 break;
90 payload <<= 1;
91 }
92
93 packet->type = INTEL_PT_TNT;
94 packet->count = count;
95 packet->payload = payload << 1;
96 return 8;
97}
98
99static int intel_pt_get_pip(const unsigned char *buf, size_t len,
100 struct intel_pt_pkt *packet)
101{
102 uint64_t payload = 0;
103
104 if (len < 8)
105 return INTEL_PT_NEED_MORE_BYTES;
106
107 packet->type = INTEL_PT_PIP;
108 memcpy_le64(&payload, buf + 2, 6);
109 packet->payload = payload >> 1;
110 if (payload & 1)
111 packet->payload |= NR_FLAG;
112
113 return 8;
114}
115
116static int intel_pt_get_tracestop(struct intel_pt_pkt *packet)
117{
118 packet->type = INTEL_PT_TRACESTOP;
119 return 2;
120}
121
122static int intel_pt_get_cbr(const unsigned char *buf, size_t len,
123 struct intel_pt_pkt *packet)
124{
125 if (len < 4)
126 return INTEL_PT_NEED_MORE_BYTES;
127 packet->type = INTEL_PT_CBR;
128 packet->payload = le16_to_cpu(*(uint16_t *)(buf + 2));
129 return 4;
130}
131
132static int intel_pt_get_vmcs(const unsigned char *buf, size_t len,
133 struct intel_pt_pkt *packet)
134{
135 unsigned int count = (52 - 5) >> 3;
136
137 if (count < 1 || count > 7)
138 return INTEL_PT_BAD_PACKET;
139
140 if (len < count + 2)
141 return INTEL_PT_NEED_MORE_BYTES;
142
143 packet->type = INTEL_PT_VMCS;
144 packet->count = count;
145 memcpy_le64(&packet->payload, buf + 2, count);
146
147 return count + 2;
148}
149
150static int intel_pt_get_ovf(struct intel_pt_pkt *packet)
151{
152 packet->type = INTEL_PT_OVF;
153 return 2;
154}
155
156static int intel_pt_get_psb(const unsigned char *buf, size_t len,
157 struct intel_pt_pkt *packet)
158{
159 int i;
160
161 if (len < 16)
162 return INTEL_PT_NEED_MORE_BYTES;
163
164 for (i = 2; i < 16; i += 2) {
165 if (buf[i] != 2 || buf[i + 1] != 0x82)
166 return INTEL_PT_BAD_PACKET;
167 }
168
169 packet->type = INTEL_PT_PSB;
170 return 16;
171}
172
173static int intel_pt_get_psbend(struct intel_pt_pkt *packet)
174{
175 packet->type = INTEL_PT_PSBEND;
176 return 2;
177}
178
179static int intel_pt_get_tma(const unsigned char *buf, size_t len,
180 struct intel_pt_pkt *packet)
181{
182 if (len < 7)
183 return INTEL_PT_NEED_MORE_BYTES;
184
185 packet->type = INTEL_PT_TMA;
186 packet->payload = buf[2] | (buf[3] << 8);
187 packet->count = buf[5] | ((buf[6] & BIT(0)) << 8);
188 return 7;
189}
190
191static int intel_pt_get_pad(struct intel_pt_pkt *packet)
192{
193 packet->type = INTEL_PT_PAD;
194 return 1;
195}
196
197static int intel_pt_get_mnt(const unsigned char *buf, size_t len,
198 struct intel_pt_pkt *packet)
199{
200 if (len < 11)
201 return INTEL_PT_NEED_MORE_BYTES;
202 packet->type = INTEL_PT_MNT;
203 memcpy_le64(&packet->payload, buf + 3, 8);
204 return 11
205;
206}
207
208static int intel_pt_get_3byte(const unsigned char *buf, size_t len,
209 struct intel_pt_pkt *packet)
210{
211 if (len < 3)
212 return INTEL_PT_NEED_MORE_BYTES;
213
214 switch (buf[2]) {
215 case 0x88:
216 return intel_pt_get_mnt(buf, len, packet);
217 default:
218 return INTEL_PT_BAD_PACKET;
219 }
220}
221
222static int intel_pt_get_ptwrite(const unsigned char *buf, size_t len,
223 struct intel_pt_pkt *packet)
224{
225 packet->count = (buf[1] >> 5) & 0x3;
226 packet->type = buf[1] & BIT(7) ? INTEL_PT_PTWRITE_IP :
227 INTEL_PT_PTWRITE;
228
229 switch (packet->count) {
230 case 0:
231 if (len < 6)
232 return INTEL_PT_NEED_MORE_BYTES;
233 packet->payload = le32_to_cpu(*(uint32_t *)(buf + 2));
234 return 6;
235 case 1:
236 if (len < 10)
237 return INTEL_PT_NEED_MORE_BYTES;
238 packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2));
239 return 10;
240 default:
241 return INTEL_PT_BAD_PACKET;
242 }
243}
244
245static int intel_pt_get_exstop(struct intel_pt_pkt *packet)
246{
247 packet->type = INTEL_PT_EXSTOP;
248 return 2;
249}
250
251static int intel_pt_get_exstop_ip(struct intel_pt_pkt *packet)
252{
253 packet->type = INTEL_PT_EXSTOP_IP;
254 return 2;
255}
256
257static int intel_pt_get_mwait(const unsigned char *buf, size_t len,
258 struct intel_pt_pkt *packet)
259{
260 if (len < 10)
261 return INTEL_PT_NEED_MORE_BYTES;
262 packet->type = INTEL_PT_MWAIT;
263 packet->payload = le64_to_cpu(*(uint64_t *)(buf + 2));
264 return 10;
265}
266
267static int intel_pt_get_pwre(const unsigned char *buf, size_t len,
268 struct intel_pt_pkt *packet)
269{
270 if (len < 4)
271 return INTEL_PT_NEED_MORE_BYTES;
272 packet->type = INTEL_PT_PWRE;
273 memcpy_le64(&packet->payload, buf + 2, 2);
274 return 4;
275}
276
277static int intel_pt_get_pwrx(const unsigned char *buf, size_t len,
278 struct intel_pt_pkt *packet)
279{
280 if (len < 7)
281 return INTEL_PT_NEED_MORE_BYTES;
282 packet->type = INTEL_PT_PWRX;
283 memcpy_le64(&packet->payload, buf + 2, 5);
284 return 7;
285}
286
287static int intel_pt_get_bbp(const unsigned char *buf, size_t len,
288 struct intel_pt_pkt *packet)
289{
290 if (len < 3)
291 return INTEL_PT_NEED_MORE_BYTES;
292 packet->type = INTEL_PT_BBP;
293 packet->count = buf[2] >> 7;
294 packet->payload = buf[2] & 0x1f;
295 return 3;
296}
297
298static int intel_pt_get_bip_4(const unsigned char *buf, size_t len,
299 struct intel_pt_pkt *packet)
300{
301 if (len < 5)
302 return INTEL_PT_NEED_MORE_BYTES;
303 packet->type = INTEL_PT_BIP;
304 packet->count = buf[0] >> 3;
305 memcpy_le64(&packet->payload, buf + 1, 4);
306 return 5;
307}
308
309static int intel_pt_get_bip_8(const unsigned char *buf, size_t len,
310 struct intel_pt_pkt *packet)
311{
312 if (len < 9)
313 return INTEL_PT_NEED_MORE_BYTES;
314 packet->type = INTEL_PT_BIP;
315 packet->count = buf[0] >> 3;
316 memcpy_le64(&packet->payload, buf + 1, 8);
317 return 9;
318}
319
320static int intel_pt_get_bep(size_t len, struct intel_pt_pkt *packet)
321{
322 if (len < 2)
323 return INTEL_PT_NEED_MORE_BYTES;
324 packet->type = INTEL_PT_BEP;
325 return 2;
326}
327
328static int intel_pt_get_bep_ip(size_t len, struct intel_pt_pkt *packet)
329{
330 if (len < 2)
331 return INTEL_PT_NEED_MORE_BYTES;
332 packet->type = INTEL_PT_BEP_IP;
333 return 2;
334}
335
336static int intel_pt_get_ext(const unsigned char *buf, size_t len,
337 struct intel_pt_pkt *packet)
338{
339 if (len < 2)
340 return INTEL_PT_NEED_MORE_BYTES;
341
342 if ((buf[1] & 0x1f) == 0x12)
343 return intel_pt_get_ptwrite(buf, len, packet);
344
345 switch (buf[1]) {
346 case 0xa3:
347 return intel_pt_get_long_tnt(buf, len, packet);
348 case 0x43:
349 return intel_pt_get_pip(buf, len, packet);
350 case 0x83:
351 return intel_pt_get_tracestop(packet);
352 case 0x03:
353 return intel_pt_get_cbr(buf, len, packet);
354 case 0xc8:
355 return intel_pt_get_vmcs(buf, len, packet);
356 case 0xf3:
357 return intel_pt_get_ovf(packet);
358 case 0x82:
359 return intel_pt_get_psb(buf, len, packet);
360 case 0x23:
361 return intel_pt_get_psbend(packet);
362 case 0x73:
363 return intel_pt_get_tma(buf, len, packet);
364 case 0xC3:
365 return intel_pt_get_3byte(buf, len, packet);
366 case 0x62:
367 return intel_pt_get_exstop(packet);
368 case 0xE2:
369 return intel_pt_get_exstop_ip(packet);
370 case 0xC2:
371 return intel_pt_get_mwait(buf, len, packet);
372 case 0x22:
373 return intel_pt_get_pwre(buf, len, packet);
374 case 0xA2:
375 return intel_pt_get_pwrx(buf, len, packet);
376 case 0x63:
377 return intel_pt_get_bbp(buf, len, packet);
378 case 0x33:
379 return intel_pt_get_bep(len, packet);
380 case 0xb3:
381 return intel_pt_get_bep_ip(len, packet);
382 default:
383 return INTEL_PT_BAD_PACKET;
384 }
385}
386
387static int intel_pt_get_short_tnt(unsigned int byte,
388 struct intel_pt_pkt *packet)
389{
390 int count;
391
392 for (count = 6; count; count--) {
393 if (byte & BIT(7))
394 break;
395 byte <<= 1;
396 }
397
398 packet->type = INTEL_PT_TNT;
399 packet->count = count;
400 packet->payload = (uint64_t)byte << 57;
401
402 return 1;
403}
404
405static int intel_pt_get_cyc(unsigned int byte, const unsigned char *buf,
406 size_t len, struct intel_pt_pkt *packet)
407{
408 unsigned int offs = 1, shift;
409 uint64_t payload = byte >> 3;
410
411 byte >>= 2;
412 len -= 1;
413 for (shift = 5; byte & 1; shift += 7) {
414 if (offs > 9)
415 return INTEL_PT_BAD_PACKET;
416 if (len < offs)
417 return INTEL_PT_NEED_MORE_BYTES;
418 byte = buf[offs++];
419 payload |= ((uint64_t)byte >> 1) << shift;
420 }
421
422 packet->type = INTEL_PT_CYC;
423 packet->payload = payload;
424 return offs;
425}
426
427static int intel_pt_get_ip(enum intel_pt_pkt_type type, unsigned int byte,
428 const unsigned char *buf, size_t len,
429 struct intel_pt_pkt *packet)
430{
431 int ip_len;
432
433 packet->count = byte >> 5;
434
435 switch (packet->count) {
436 case 0:
437 ip_len = 0;
438 break;
439 case 1:
440 if (len < 3)
441 return INTEL_PT_NEED_MORE_BYTES;
442 ip_len = 2;
443 packet->payload = le16_to_cpu(*(uint16_t *)(buf + 1));
444 break;
445 case 2:
446 if (len < 5)
447 return INTEL_PT_NEED_MORE_BYTES;
448 ip_len = 4;
449 packet->payload = le32_to_cpu(*(uint32_t *)(buf + 1));
450 break;
451 case 3:
452 case 4:
453 if (len < 7)
454 return INTEL_PT_NEED_MORE_BYTES;
455 ip_len = 6;
456 memcpy_le64(&packet->payload, buf + 1, 6);
457 break;
458 case 6:
459 if (len < 9)
460 return INTEL_PT_NEED_MORE_BYTES;
461 ip_len = 8;
462 packet->payload = le64_to_cpu(*(uint64_t *)(buf + 1));
463 break;
464 default:
465 return INTEL_PT_BAD_PACKET;
466 }
467
468 packet->type = type;
469
470 return ip_len + 1;
471}
472
473static int intel_pt_get_mode(const unsigned char *buf, size_t len,
474 struct intel_pt_pkt *packet)
475{
476 if (len < 2)
477 return INTEL_PT_NEED_MORE_BYTES;
478
479 switch (buf[1] >> 5) {
480 case 0:
481 packet->type = INTEL_PT_MODE_EXEC;
482 switch (buf[1] & 3) {
483 case 0:
484 packet->payload = 16;
485 break;
486 case 1:
487 packet->payload = 64;
488 break;
489 case 2:
490 packet->payload = 32;
491 break;
492 default:
493 return INTEL_PT_BAD_PACKET;
494 }
495 break;
496 case 1:
497 packet->type = INTEL_PT_MODE_TSX;
498 if ((buf[1] & 3) == 3)
499 return INTEL_PT_BAD_PACKET;
500 packet->payload = buf[1] & 3;
501 break;
502 default:
503 return INTEL_PT_BAD_PACKET;
504 }
505
506 return 2;
507}
508
509static int intel_pt_get_tsc(const unsigned char *buf, size_t len,
510 struct intel_pt_pkt *packet)
511{
512 if (len < 8)
513 return INTEL_PT_NEED_MORE_BYTES;
514 packet->type = INTEL_PT_TSC;
515 memcpy_le64(&packet->payload, buf + 1, 7);
516 return 8;
517}
518
519static int intel_pt_get_mtc(const unsigned char *buf, size_t len,
520 struct intel_pt_pkt *packet)
521{
522 if (len < 2)
523 return INTEL_PT_NEED_MORE_BYTES;
524 packet->type = INTEL_PT_MTC;
525 packet->payload = buf[1];
526 return 2;
527}
528
529static int intel_pt_do_get_packet(const unsigned char *buf, size_t len,
530 struct intel_pt_pkt *packet,
531 enum intel_pt_pkt_ctx ctx)
532{
533 unsigned int byte;
534
535 memset(packet, 0, sizeof(struct intel_pt_pkt));
536
537 if (!len)
538 return INTEL_PT_NEED_MORE_BYTES;
539
540 byte = buf[0];
541
542 switch (ctx) {
543 case INTEL_PT_NO_CTX:
544 break;
545 case INTEL_PT_BLK_4_CTX:
546 if ((byte & 0x7) == 4)
547 return intel_pt_get_bip_4(buf, len, packet);
548 break;
549 case INTEL_PT_BLK_8_CTX:
550 if ((byte & 0x7) == 4)
551 return intel_pt_get_bip_8(buf, len, packet);
552 break;
553 default:
554 break;
555 }
556
557 if (!(byte & BIT(0))) {
558 if (byte == 0)
559 return intel_pt_get_pad(packet);
560 if (byte == 2)
561 return intel_pt_get_ext(buf, len, packet);
562 return intel_pt_get_short_tnt(byte, packet);
563 }
564
565 if ((byte & 2))
566 return intel_pt_get_cyc(byte, buf, len, packet);
567
568 switch (byte & 0x1f) {
569 case 0x0D:
570 return intel_pt_get_ip(INTEL_PT_TIP, byte, buf, len, packet);
571 case 0x11:
572 return intel_pt_get_ip(INTEL_PT_TIP_PGE, byte, buf, len,
573 packet);
574 case 0x01:
575 return intel_pt_get_ip(INTEL_PT_TIP_PGD, byte, buf, len,
576 packet);
577 case 0x1D:
578 return intel_pt_get_ip(INTEL_PT_FUP, byte, buf, len, packet);
579 case 0x19:
580 switch (byte) {
581 case 0x99:
582 return intel_pt_get_mode(buf, len, packet);
583 case 0x19:
584 return intel_pt_get_tsc(buf, len, packet);
585 case 0x59:
586 return intel_pt_get_mtc(buf, len, packet);
587 default:
588 return INTEL_PT_BAD_PACKET;
589 }
590 default:
591 return INTEL_PT_BAD_PACKET;
592 }
593}
594
595void intel_pt_upd_pkt_ctx(const struct intel_pt_pkt *packet,
596 enum intel_pt_pkt_ctx *ctx)
597{
598 switch (packet->type) {
599 case INTEL_PT_BAD:
600 case INTEL_PT_PAD:
601 case INTEL_PT_TSC:
602 case INTEL_PT_TMA:
603 case INTEL_PT_MTC:
604 case INTEL_PT_FUP:
605 case INTEL_PT_CYC:
606 case INTEL_PT_CBR:
607 case INTEL_PT_MNT:
608 case INTEL_PT_EXSTOP:
609 case INTEL_PT_EXSTOP_IP:
610 case INTEL_PT_PWRE:
611 case INTEL_PT_PWRX:
612 case INTEL_PT_BIP:
613 break;
614 case INTEL_PT_TNT:
615 case INTEL_PT_TIP:
616 case INTEL_PT_TIP_PGD:
617 case INTEL_PT_TIP_PGE:
618 case INTEL_PT_MODE_EXEC:
619 case INTEL_PT_MODE_TSX:
620 case INTEL_PT_PIP:
621 case INTEL_PT_OVF:
622 case INTEL_PT_VMCS:
623 case INTEL_PT_TRACESTOP:
624 case INTEL_PT_PSB:
625 case INTEL_PT_PSBEND:
626 case INTEL_PT_PTWRITE:
627 case INTEL_PT_PTWRITE_IP:
628 case INTEL_PT_MWAIT:
629 case INTEL_PT_BEP:
630 case INTEL_PT_BEP_IP:
631 *ctx = INTEL_PT_NO_CTX;
632 break;
633 case INTEL_PT_BBP:
634 if (packet->count)
635 *ctx = INTEL_PT_BLK_4_CTX;
636 else
637 *ctx = INTEL_PT_BLK_8_CTX;
638 break;
639 default:
640 break;
641 }
642}
643
644int intel_pt_get_packet(const unsigned char *buf, size_t len,
645 struct intel_pt_pkt *packet, enum intel_pt_pkt_ctx *ctx)
646{
647 int ret;
648
649 ret = intel_pt_do_get_packet(buf, len, packet, *ctx);
650 if (ret > 0) {
651 while (ret < 8 && len > (size_t)ret && !buf[ret])
652 ret += 1;
653 intel_pt_upd_pkt_ctx(packet, ctx);
654 }
655 return ret;
656}
657
658int intel_pt_pkt_desc(const struct intel_pt_pkt *packet, char *buf,
659 size_t buf_len)
660{
661 int ret, i, nr;
662 unsigned long long payload = packet->payload;
663 const char *name = intel_pt_pkt_name(packet->type);
664
665 switch (packet->type) {
666 case INTEL_PT_BAD:
667 case INTEL_PT_PAD:
668 case INTEL_PT_PSB:
669 case INTEL_PT_PSBEND:
670 case INTEL_PT_TRACESTOP:
671 case INTEL_PT_OVF:
672 return snprintf(buf, buf_len, "%s", name);
673 case INTEL_PT_TNT: {
674 size_t blen = buf_len;
675
676 ret = snprintf(buf, blen, "%s ", name);
677 if (ret < 0)
678 return ret;
679 buf += ret;
680 blen -= ret;
681 for (i = 0; i < packet->count; i++) {
682 if (payload & BIT63)
683 ret = snprintf(buf, blen, "T");
684 else
685 ret = snprintf(buf, blen, "N");
686 if (ret < 0)
687 return ret;
688 buf += ret;
689 blen -= ret;
690 payload <<= 1;
691 }
692 ret = snprintf(buf, blen, " (%d)", packet->count);
693 if (ret < 0)
694 return ret;
695 blen -= ret;
696 return buf_len - blen;
697 }
698 case INTEL_PT_TIP_PGD:
699 case INTEL_PT_TIP_PGE:
700 case INTEL_PT_TIP:
701 case INTEL_PT_FUP:
702 if (!(packet->count))
703 return snprintf(buf, buf_len, "%s no ip", name);
704 __fallthrough;
705 case INTEL_PT_CYC:
706 case INTEL_PT_VMCS:
707 case INTEL_PT_MTC:
708 case INTEL_PT_MNT:
709 case INTEL_PT_CBR:
710 case INTEL_PT_TSC:
711 return snprintf(buf, buf_len, "%s 0x%llx", name, payload);
712 case INTEL_PT_TMA:
713 return snprintf(buf, buf_len, "%s CTC 0x%x FC 0x%x", name,
714 (unsigned)payload, packet->count);
715 case INTEL_PT_MODE_EXEC:
716 return snprintf(buf, buf_len, "%s %lld", name, payload);
717 case INTEL_PT_MODE_TSX:
718 return snprintf(buf, buf_len, "%s TXAbort:%u InTX:%u",
719 name, (unsigned)(payload >> 1) & 1,
720 (unsigned)payload & 1);
721 case INTEL_PT_PIP:
722 nr = packet->payload & NR_FLAG ? 1 : 0;
723 payload &= ~NR_FLAG;
724 ret = snprintf(buf, buf_len, "%s 0x%llx (NR=%d)",
725 name, payload, nr);
726 return ret;
727 case INTEL_PT_PTWRITE:
728 return snprintf(buf, buf_len, "%s 0x%llx IP:0", name, payload);
729 case INTEL_PT_PTWRITE_IP:
730 return snprintf(buf, buf_len, "%s 0x%llx IP:1", name, payload);
731 case INTEL_PT_BEP:
732 case INTEL_PT_EXSTOP:
733 return snprintf(buf, buf_len, "%s IP:0", name);
734 case INTEL_PT_BEP_IP:
735 case INTEL_PT_EXSTOP_IP:
736 return snprintf(buf, buf_len, "%s IP:1", name);
737 case INTEL_PT_MWAIT:
738 return snprintf(buf, buf_len, "%s 0x%llx Hints 0x%x Extensions 0x%x",
739 name, payload, (unsigned int)(payload & 0xff),
740 (unsigned int)((payload >> 32) & 0x3));
741 case INTEL_PT_PWRE:
742 return snprintf(buf, buf_len, "%s 0x%llx HW:%u CState:%u Sub-CState:%u",
743 name, payload, !!(payload & 0x80),
744 (unsigned int)((payload >> 12) & 0xf),
745 (unsigned int)((payload >> 8) & 0xf));
746 case INTEL_PT_PWRX:
747 return snprintf(buf, buf_len, "%s 0x%llx Last CState:%u Deepest CState:%u Wake Reason 0x%x",
748 name, payload,
749 (unsigned int)((payload >> 4) & 0xf),
750 (unsigned int)(payload & 0xf),
751 (unsigned int)((payload >> 8) & 0xf));
752 case INTEL_PT_BBP:
753 return snprintf(buf, buf_len, "%s SZ %s-byte Type 0x%llx",
754 name, packet->count ? "4" : "8", payload);
755 case INTEL_PT_BIP:
756 return snprintf(buf, buf_len, "%s ID 0x%02x Value 0x%llx",
757 name, packet->count, payload);
758 default:
759 break;
760 }
761 return snprintf(buf, buf_len, "%s 0x%llx (%d)",
762 name, payload, packet->count);
763}
764
