File: cpuid_test.go

package info (click to toggle)
golang-github-klauspost-cpuid 1.0-1~bpo8%2B1
  • links: PTS, VCS
  • area: main
  • in suites: jessie-backports, jessie-backports-sloppy
  • size: 444 kB
  • sloc: asm: 62; makefile: 2
file content (727 lines) | stat: -rw-r--r-- 20,677 bytes parent folder | download | duplicates (2)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
// Copyright (c) 2015 Klaus Post, released under MIT License. See LICENSE file.

package cpuid

import (
	"fmt"
	"testing"
)

// There is no real way to test a CPU identifier, since results will
// obviously differ on each machine.
func TestCPUID(t *testing.T) {
	n := maxFunctionID()
	t.Logf("Max Function:0x%x\n", n)
	n = maxExtendedFunction()
	t.Logf("Max Extended Function:0x%x\n", n)
	t.Log("Name:", CPU.BrandName)
	t.Log("PhysicalCores:", CPU.PhysicalCores)
	t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
	t.Log("LogicalCores:", CPU.LogicalCores)
	t.Log("Family", CPU.Family, "Model:", CPU.Model)
	t.Log("Features:", CPU.Features)
	t.Log("Cacheline bytes:", CPU.CacheLine)
	t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
	t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
	t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
	t.Log("L3 Cache:", CPU.Cache.L3, "bytes")

	if CPU.SSE2() {
		t.Log("We have SSE2")
	}
}

func TestDumpCPUID(t *testing.T) {
	n := int(maxFunctionID())
	for i := 0; i <= n; i++ {
		a, b, c, d := cpuidex(uint32(i), 0)
		t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
		ex := uint32(1)
		for {
			a2, b2, c2, d2 := cpuidex(uint32(i), ex)
			if a2 == a && b2 == b && d2 == d || ex > 50 || a2 == 0 {
				break
			}
			t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a2, b2, c2, d2)
			a, b, c, d = a2, b2, c2, d2
			ex++
		}
	}
	n2 := maxExtendedFunction()
	for i := uint32(0x80000000); i <= n2; i++ {
		a, b, c, d := cpuid(i)
		t.Logf("CPUID %08x: %08x-%08x-%08x-%08x", i, a, b, c, d)
	}
}

func Example() {
	// Print basic CPU information:
	fmt.Println("Name:", CPU.BrandName)
	fmt.Println("PhysicalCores:", CPU.PhysicalCores)
	fmt.Println("ThreadsPerCore:", CPU.ThreadsPerCore)
	fmt.Println("LogicalCores:", CPU.LogicalCores)
	fmt.Println("Family", CPU.Family, "Model:", CPU.Model)
	fmt.Println("Features:", CPU.Features)
	fmt.Println("Cacheline bytes:", CPU.CacheLine)

	// Test if we have a specific feature:
	if CPU.SSE() {
		fmt.Println("We have Streaming SIMD Extensions")
	}
}

func TestBrandNameZero(t *testing.T) {
	if len(CPU.BrandName) > 0 {
		// Cut out last byte
		last := []byte(CPU.BrandName[len(CPU.BrandName)-1:])
		if last[0] == 0 {
			t.Fatal("last byte was zero")
		} else if last[0] == 32 {
			t.Fatal("whitespace wasn't trimmed")
		}
	}
}

// Generated here: http://play.golang.org/p/mko-0tFt0Q

// TestCmov tests Cmov() function
func TestCmov(t *testing.T) {
	got := CPU.Cmov()
	expected := CPU.Features&CMOV == CMOV
	if got != expected {
		t.Fatalf("Cmov: expected %v, got %v", expected, got)
	}
	t.Log("CMOV Support:", got)
}

// TestAmd3dnow tests Amd3dnow() function
func TestAmd3dnow(t *testing.T) {
	got := CPU.Amd3dnow()
	expected := CPU.Features&AMD3DNOW == AMD3DNOW
	if got != expected {
		t.Fatalf("Amd3dnow: expected %v, got %v", expected, got)
	}
	t.Log("AMD3DNOW Support:", got)
}

// TestAmd3dnowExt tests Amd3dnowExt() function
func TestAmd3dnowExt(t *testing.T) {
	got := CPU.Amd3dnowExt()
	expected := CPU.Features&AMD3DNOWEXT == AMD3DNOWEXT
	if got != expected {
		t.Fatalf("Amd3dnowExt: expected %v, got %v", expected, got)
	}
	t.Log("AMD3DNOWEXT Support:", got)
}

// TestMMX tests MMX() function
func TestMMX(t *testing.T) {
	got := CPU.MMX()
	expected := CPU.Features&MMX == MMX
	if got != expected {
		t.Fatalf("MMX: expected %v, got %v", expected, got)
	}
	t.Log("MMX Support:", got)
}

// TestMMXext tests MMXext() function
func TestMMXext(t *testing.T) {
	got := CPU.MMXExt()
	expected := CPU.Features&MMXEXT == MMXEXT
	if got != expected {
		t.Fatalf("MMXExt: expected %v, got %v", expected, got)
	}
	t.Log("MMXEXT Support:", got)
}

// TestSSE tests SSE() function
func TestSSE(t *testing.T) {
	got := CPU.SSE()
	expected := CPU.Features&SSE == SSE
	if got != expected {
		t.Fatalf("SSE: expected %v, got %v", expected, got)
	}
	t.Log("SSE Support:", got)
}

// TestSSE2 tests SSE2() function
func TestSSE2(t *testing.T) {
	got := CPU.SSE2()
	expected := CPU.Features&SSE2 == SSE2
	if got != expected {
		t.Fatalf("SSE2: expected %v, got %v", expected, got)
	}
	t.Log("SSE2 Support:", got)
}

// TestSSE3 tests SSE3() function
func TestSSE3(t *testing.T) {
	got := CPU.SSE3()
	expected := CPU.Features&SSE3 == SSE3
	if got != expected {
		t.Fatalf("SSE3: expected %v, got %v", expected, got)
	}
	t.Log("SSE3 Support:", got)
}

// TestSSSE3 tests SSSE3() function
func TestSSSE3(t *testing.T) {
	got := CPU.SSSE3()
	expected := CPU.Features&SSSE3 == SSSE3
	if got != expected {
		t.Fatalf("SSSE3: expected %v, got %v", expected, got)
	}
	t.Log("SSSE3 Support:", got)
}

// TestSSE4 tests SSE4() function
func TestSSE4(t *testing.T) {
	got := CPU.SSE4()
	expected := CPU.Features&SSE4 == SSE4
	if got != expected {
		t.Fatalf("SSE4: expected %v, got %v", expected, got)
	}
	t.Log("SSE4 Support:", got)
}

// TestSSE42 tests SSE42() function
func TestSSE42(t *testing.T) {
	got := CPU.SSE42()
	expected := CPU.Features&SSE42 == SSE42
	if got != expected {
		t.Fatalf("SSE42: expected %v, got %v", expected, got)
	}
	t.Log("SSE42 Support:", got)
}

// TestAVX tests AVX() function
func TestAVX(t *testing.T) {
	got := CPU.AVX()
	expected := CPU.Features&AVX == AVX
	if got != expected {
		t.Fatalf("AVX: expected %v, got %v", expected, got)
	}
	t.Log("AVX Support:", got)
}

// TestAVX2 tests AVX2() function
func TestAVX2(t *testing.T) {
	got := CPU.AVX2()
	expected := CPU.Features&AVX2 == AVX2
	if got != expected {
		t.Fatalf("AVX2: expected %v, got %v", expected, got)
	}
	t.Log("AVX2 Support:", got)
}

// TestFMA3 tests FMA3() function
func TestFMA3(t *testing.T) {
	got := CPU.FMA3()
	expected := CPU.Features&FMA3 == FMA3
	if got != expected {
		t.Fatalf("FMA3: expected %v, got %v", expected, got)
	}
	t.Log("FMA3 Support:", got)
}

// TestFMA4 tests FMA4() function
func TestFMA4(t *testing.T) {
	got := CPU.FMA4()
	expected := CPU.Features&FMA4 == FMA4
	if got != expected {
		t.Fatalf("FMA4: expected %v, got %v", expected, got)
	}
	t.Log("FMA4 Support:", got)
}

// TestXOP tests XOP() function
func TestXOP(t *testing.T) {
	got := CPU.XOP()
	expected := CPU.Features&XOP == XOP
	if got != expected {
		t.Fatalf("XOP: expected %v, got %v", expected, got)
	}
	t.Log("XOP Support:", got)
}

// TestF16C tests F16C() function
func TestF16C(t *testing.T) {
	got := CPU.F16C()
	expected := CPU.Features&F16C == F16C
	if got != expected {
		t.Fatalf("F16C: expected %v, got %v", expected, got)
	}
	t.Log("F16C Support:", got)
}

// TestCX16 tests CX16() function
func TestCX16(t *testing.T) {
	got := CPU.CX16()
	expected := CPU.Features&CX16 == CX16
	if got != expected {
		t.Fatalf("CX16: expected %v, got %v", expected, got)
	}
	t.Log("CX16 Support:", got)
}

// TestSGX tests SGX() function
func TestSGX(t *testing.T) {
	got := CPU.SGX.Available
	expected := CPU.Features&SGX == SGX
	if got != expected {
		t.Fatalf("SGX: expected %v, got %v", expected, got)
	}
	t.Log("SGX Support:", got)
}

// TestBMI1 tests BMI1() function
func TestBMI1(t *testing.T) {
	got := CPU.BMI1()
	expected := CPU.Features&BMI1 == BMI1
	if got != expected {
		t.Fatalf("BMI1: expected %v, got %v", expected, got)
	}
	t.Log("BMI1 Support:", got)
}

// TestBMI2 tests BMI2() function
func TestBMI2(t *testing.T) {
	got := CPU.BMI2()
	expected := CPU.Features&BMI2 == BMI2
	if got != expected {
		t.Fatalf("BMI2: expected %v, got %v", expected, got)
	}
	t.Log("BMI2 Support:", got)
}

// TestTBM tests TBM() function
func TestTBM(t *testing.T) {
	got := CPU.TBM()
	expected := CPU.Features&TBM == TBM
	if got != expected {
		t.Fatalf("TBM: expected %v, got %v", expected, got)
	}
	t.Log("TBM Support:", got)
}

// TestLzcnt tests Lzcnt() function
func TestLzcnt(t *testing.T) {
	got := CPU.Lzcnt()
	expected := CPU.Features&LZCNT == LZCNT
	if got != expected {
		t.Fatalf("Lzcnt: expected %v, got %v", expected, got)
	}
	t.Log("LZCNT Support:", got)
}

// TestLzcnt tests Lzcnt() function
func TestPopcnt(t *testing.T) {
	got := CPU.Popcnt()
	expected := CPU.Features&POPCNT == POPCNT
	if got != expected {
		t.Fatalf("Popcnt: expected %v, got %v", expected, got)
	}
	t.Log("POPCNT Support:", got)
}

// TestAesNi tests AesNi() function
func TestAesNi(t *testing.T) {
	got := CPU.AesNi()
	expected := CPU.Features&AESNI == AESNI
	if got != expected {
		t.Fatalf("AesNi: expected %v, got %v", expected, got)
	}
	t.Log("AESNI Support:", got)
}

// TestHTT tests HTT() function
func TestHTT(t *testing.T) {
	got := CPU.HTT()
	expected := CPU.Features&HTT == HTT
	if got != expected {
		t.Fatalf("HTT: expected %v, got %v", expected, got)
	}
	t.Log("HTT Support:", got)
}

// TestClmul tests Clmul() function
func TestClmul(t *testing.T) {
	got := CPU.Clmul()
	expected := CPU.Features&CLMUL == CLMUL
	if got != expected {
		t.Fatalf("Clmul: expected %v, got %v", expected, got)
	}
	t.Log("CLMUL Support:", got)
}

// TestSSE2Slow tests SSE2Slow() function
func TestSSE2Slow(t *testing.T) {
	got := CPU.SSE2Slow()
	expected := CPU.Features&SSE2SLOW == SSE2SLOW
	if got != expected {
		t.Fatalf("SSE2Slow: expected %v, got %v", expected, got)
	}
	t.Log("SSE2SLOW Support:", got)
}

// TestSSE3Slow tests SSE3slow() function
func TestSSE3Slow(t *testing.T) {
	got := CPU.SSE3Slow()
	expected := CPU.Features&SSE3SLOW == SSE3SLOW
	if got != expected {
		t.Fatalf("SSE3slow: expected %v, got %v", expected, got)
	}
	t.Log("SSE3SLOW Support:", got)
}

// TestAtom tests Atom() function
func TestAtom(t *testing.T) {
	got := CPU.Atom()
	expected := CPU.Features&ATOM == ATOM
	if got != expected {
		t.Fatalf("Atom: expected %v, got %v", expected, got)
	}
	t.Log("ATOM Support:", got)
}

// TestNX tests NX() function (NX (No-Execute) bit)
func TestNX(t *testing.T) {
	got := CPU.NX()
	expected := CPU.Features&NX == NX
	if got != expected {
		t.Fatalf("NX: expected %v, got %v", expected, got)
	}
	t.Log("NX Support:", got)
}

// TestSSE4A tests SSE4A() function (AMD Barcelona microarchitecture SSE4a instructions)
func TestSSE4A(t *testing.T) {
	got := CPU.SSE4A()
	expected := CPU.Features&SSE4A == SSE4A
	if got != expected {
		t.Fatalf("SSE4A: expected %v, got %v", expected, got)
	}
	t.Log("SSE4A Support:", got)
}

// TestHLE tests HLE() function (Hardware Lock Elision)
func TestHLE(t *testing.T) {
	got := CPU.HLE()
	expected := CPU.Features&HLE == HLE
	if got != expected {
		t.Fatalf("HLE: expected %v, got %v", expected, got)
	}
	t.Log("HLE Support:", got)
}

// TestRTM tests RTM() function (Restricted Transactional Memory)
func TestRTM(t *testing.T) {
	got := CPU.RTM()
	expected := CPU.Features&RTM == RTM
	if got != expected {
		t.Fatalf("RTM: expected %v, got %v", expected, got)
	}
	t.Log("RTM Support:", got)
}

// TestRdrand tests RDRAND() function (RDRAND instruction is available)
func TestRdrand(t *testing.T) {
	got := CPU.Rdrand()
	expected := CPU.Features&RDRAND == RDRAND
	if got != expected {
		t.Fatalf("Rdrand: expected %v, got %v", expected, got)
	}
	t.Log("Rdrand Support:", got)
}

// TestRdseed tests RDSEED() function (RDSEED instruction is available)
func TestRdseed(t *testing.T) {
	got := CPU.Rdseed()
	expected := CPU.Features&RDSEED == RDSEED
	if got != expected {
		t.Fatalf("Rdseed: expected %v, got %v", expected, got)
	}
	t.Log("Rdseed Support:", got)
}

// TestADX tests ADX() function (Intel ADX (Multi-Precision Add-Carry Instruction Extensions))
func TestADX(t *testing.T) {
	got := CPU.ADX()
	expected := CPU.Features&ADX == ADX
	if got != expected {
		t.Fatalf("ADX: expected %v, got %v", expected, got)
	}
	t.Log("ADX Support:", got)
}

// TestSHA tests SHA() function (Intel SHA Extensions)
func TestSHA(t *testing.T) {
	got := CPU.SHA()
	expected := CPU.Features&SHA == SHA
	if got != expected {
		t.Fatalf("SHA: expected %v, got %v", expected, got)
	}
	t.Log("SHA Support:", got)
}

// TestAVX512F tests AVX512F() function (AVX-512 Foundation)
func TestAVX512F(t *testing.T) {
	got := CPU.AVX512F()
	expected := CPU.Features&AVX512F == AVX512F
	if got != expected {
		t.Fatalf("AVX512F: expected %v, got %v", expected, got)
	}
	t.Log("AVX512F Support:", got)
}

// TestAVX512DQ tests AVX512DQ() function (AVX-512 Doubleword and Quadword Instructions)
func TestAVX512DQ(t *testing.T) {
	got := CPU.AVX512DQ()
	expected := CPU.Features&AVX512DQ == AVX512DQ
	if got != expected {
		t.Fatalf("AVX512DQ: expected %v, got %v", expected, got)
	}
	t.Log("AVX512DQ Support:", got)
}

// TestAVX512IFMA tests AVX512IFMA() function (AVX-512 Integer Fused Multiply-Add Instructions)
func TestAVX512IFMA(t *testing.T) {
	got := CPU.AVX512IFMA()
	expected := CPU.Features&AVX512IFMA == AVX512IFMA
	if got != expected {
		t.Fatalf("AVX512IFMA: expected %v, got %v", expected, got)
	}
	t.Log("AVX512IFMA Support:", got)
}

// TestAVX512PF tests AVX512PF() function (AVX-512 Prefetch Instructions)
func TestAVX512PF(t *testing.T) {
	got := CPU.AVX512PF()
	expected := CPU.Features&AVX512PF == AVX512PF
	if got != expected {
		t.Fatalf("AVX512PF: expected %v, got %v", expected, got)
	}
	t.Log("AVX512PF Support:", got)
}

// TestAVX512ER tests AVX512ER() function (AVX-512 Exponential and Reciprocal Instructions)
func TestAVX512ER(t *testing.T) {
	got := CPU.AVX512ER()
	expected := CPU.Features&AVX512ER == AVX512ER
	if got != expected {
		t.Fatalf("AVX512ER: expected %v, got %v", expected, got)
	}
	t.Log("AVX512ER Support:", got)
}

// TestAVX512CD tests AVX512CD() function (AVX-512 Conflict Detection Instructions)
func TestAVX512CD(t *testing.T) {
	got := CPU.AVX512CD()
	expected := CPU.Features&AVX512CD == AVX512CD
	if got != expected {
		t.Fatalf("AVX512CD: expected %v, got %v", expected, got)
	}
	t.Log("AVX512CD Support:", got)
}

// TestAVX512BW tests AVX512BW() function (AVX-512 Byte and Word Instructions)
func TestAVX512BW(t *testing.T) {
	got := CPU.AVX512BW()
	expected := CPU.Features&AVX512BW == AVX512BW
	if got != expected {
		t.Fatalf("AVX512BW: expected %v, got %v", expected, got)
	}
	t.Log("AVX512BW Support:", got)
}

// TestAVX512VL tests AVX512VL() function (AVX-512 Vector Length Extensions)
func TestAVX512VL(t *testing.T) {
	got := CPU.AVX512VL()
	expected := CPU.Features&AVX512VL == AVX512VL
	if got != expected {
		t.Fatalf("AVX512VL: expected %v, got %v", expected, got)
	}
	t.Log("AVX512VL Support:", got)
}

// TestAVX512VL tests AVX512VBMI() function (AVX-512 Vector Bit Manipulation Instructions)
func TestAVX512VBMI(t *testing.T) {
	got := CPU.AVX512VBMI()
	expected := CPU.Features&AVX512VBMI == AVX512VBMI
	if got != expected {
		t.Fatalf("AVX512VBMI: expected %v, got %v", expected, got)
	}
	t.Log("AVX512VBMI Support:", got)
}

// TestMPX tests MPX() function (Intel MPX (Memory Protection Extensions))
func TestMPX(t *testing.T) {
	got := CPU.MPX()
	expected := CPU.Features&MPX == MPX
	if got != expected {
		t.Fatalf("MPX: expected %v, got %v", expected, got)
	}
	t.Log("MPX Support:", got)
}

// TestERMS tests ERMS() function (Enhanced REP MOVSB/STOSB)
func TestERMS(t *testing.T) {
	got := CPU.ERMS()
	expected := CPU.Features&ERMS == ERMS
	if got != expected {
		t.Fatalf("ERMS: expected %v, got %v", expected, got)
	}
	t.Log("ERMS Support:", got)
}

// TestVendor writes the detected vendor. Will be 0 if unknown
func TestVendor(t *testing.T) {
	t.Log("Vendor ID:", CPU.VendorID)
}

// Intel returns true if vendor is recognized as Intel
func TestIntel(t *testing.T) {
	got := CPU.Intel()
	expected := CPU.VendorID == Intel
	if got != expected {
		t.Fatalf("TestIntel: expected %v, got %v", expected, got)
	}
	t.Log("TestIntel:", got)
}

// AMD returns true if vendor is recognized as AMD
func TestAMD(t *testing.T) {
	got := CPU.AMD()
	expected := CPU.VendorID == AMD
	if got != expected {
		t.Fatalf("TestAMD: expected %v, got %v", expected, got)
	}
	t.Log("TestAMD:", got)
}

// Transmeta returns true if vendor is recognized as Transmeta
func TestTransmeta(t *testing.T) {
	got := CPU.Transmeta()
	expected := CPU.VendorID == Transmeta
	if got != expected {
		t.Fatalf("TestTransmeta: expected %v, got %v", expected, got)
	}
	t.Log("TestTransmeta:", got)
}

// NSC returns true if vendor is recognized as National Semiconductor
func TestNSC(t *testing.T) {
	got := CPU.NSC()
	expected := CPU.VendorID == NSC
	if got != expected {
		t.Fatalf("TestNSC: expected %v, got %v", expected, got)
	}
	t.Log("TestNSC:", got)
}

// VIA returns true if vendor is recognized as VIA
func TestVIA(t *testing.T) {
	got := CPU.VIA()
	expected := CPU.VendorID == VIA
	if got != expected {
		t.Fatalf("TestVIA: expected %v, got %v", expected, got)
	}
	t.Log("TestVIA:", got)
}

// Test VM function
func TestVM(t *testing.T) {
	t.Log("Vendor ID:", CPU.VM())
}

// Test RTCounter function
func TestRtCounter(t *testing.T) {
	a := CPU.RTCounter()
	b := CPU.RTCounter()
	t.Log("CPU Counter:", a, b, b-a)
}

// Prints the value of Ia32TscAux()
func TestIa32TscAux(t *testing.T) {
	ecx := CPU.Ia32TscAux()
	t.Logf("Ia32TscAux:0x%x\n", ecx)
	if ecx != 0 {
		chip := (ecx & 0xFFF000) >> 12
		core := ecx & 0xFFF
		t.Log("Likely chip, core:", chip, core)
	}
}

func TestThreadsPerCoreNZ(t *testing.T) {
	if CPU.ThreadsPerCore == 0 {
		t.Fatal("threads per core is zero")
	}
}

// Prints the value of LogicalCPU()
func TestLogicalCPU(t *testing.T) {
	t.Log("Currently executing on cpu:", CPU.LogicalCPU())
}

func TestMaxFunction(t *testing.T) {
	expect := maxFunctionID()
	if CPU.maxFunc != expect {
		t.Fatal("Max function does not match, expected", expect, "but got", CPU.maxFunc)
	}
	expect = maxExtendedFunction()
	if CPU.maxExFunc != expect {
		t.Fatal("Max Extended function does not match, expected", expect, "but got", CPU.maxFunc)
	}
}

// This example will calculate the chip/core number on Linux
// Linux encodes numa id (<<12) and core id (8bit) into TSC_AUX.
func ExampleCPUInfo_Ia32TscAux(t *testing.T) {
	ecx := CPU.Ia32TscAux()
	if ecx == 0 {
		fmt.Println("Unknown CPU ID")
		return
	}
	chip := (ecx & 0xFFF000) >> 12
	core := ecx & 0xFFF
	fmt.Println("Chip, Core:", chip, core)
}

/*
func TestPhysical(t *testing.T) {
	var test16 = "CPUID 00000000: 0000000d-756e6547-6c65746e-49656e69 \nCPUID 00000001: 000206d7-03200800-1fbee3ff-bfebfbff   \nCPUID 00000002: 76035a01-00f0b2ff-00000000-00ca0000   \nCPUID 00000003: 00000000-00000000-00000000-00000000   \nCPUID 00000004: 3c004121-01c0003f-0000003f-00000000   \nCPUID 00000004: 3c004122-01c0003f-0000003f-00000000   \nCPUID 00000004: 3c004143-01c0003f-000001ff-00000000   \nCPUID 00000004: 3c07c163-04c0003f-00003fff-00000006   \nCPUID 00000005: 00000040-00000040-00000003-00021120   \nCPUID 00000006: 00000075-00000002-00000009-00000000   \nCPUID 00000007: 00000000-00000000-00000000-00000000   \nCPUID 00000008: 00000000-00000000-00000000-00000000   \nCPUID 00000009: 00000001-00000000-00000000-00000000   \nCPUID 0000000a: 07300403-00000000-00000000-00000603   \nCPUID 0000000b: 00000000-00000000-00000003-00000003   \nCPUID 0000000b: 00000005-00000010-00000201-00000003   \nCPUID 0000000c: 00000000-00000000-00000000-00000000   \nCPUID 0000000d: 00000007-00000340-00000340-00000000   \nCPUID 0000000d: 00000001-00000000-00000000-00000000   \nCPUID 0000000d: 00000100-00000240-00000000-00000000   \nCPUID 80000000: 80000008-00000000-00000000-00000000   \nCPUID 80000001: 00000000-00000000-00000001-2c100800   \nCPUID 80000002: 20202020-49202020-6c65746e-20295228   \nCPUID 80000003: 6e6f6558-20295228-20555043-322d3545   \nCPUID 80000004: 20303636-20402030-30322e32-007a4847   \nCPUID 80000005: 00000000-00000000-00000000-00000000   \nCPUID 80000006: 00000000-00000000-01006040-00000000   \nCPUID 80000007: 00000000-00000000-00000000-00000100   \nCPUID 80000008: 0000302e-00000000-00000000-00000000"
	restore := mockCPU([]byte(test16))
	Detect()
	t.Log("Name:", CPU.BrandName)
	n := maxFunctionID()
	t.Logf("Max Function:0x%x\n", n)
	n = maxExtendedFunction()
	t.Logf("Max Extended Function:0x%x\n", n)
	t.Log("PhysicalCores:", CPU.PhysicalCores)
	t.Log("ThreadsPerCore:", CPU.ThreadsPerCore)
	t.Log("LogicalCores:", CPU.LogicalCores)
	t.Log("Family", CPU.Family, "Model:", CPU.Model)
	t.Log("Features:", CPU.Features)
	t.Log("Cacheline bytes:", CPU.CacheLine)
	t.Log("L1 Instruction Cache:", CPU.Cache.L1I, "bytes")
	t.Log("L1 Data Cache:", CPU.Cache.L1D, "bytes")
	t.Log("L2 Cache:", CPU.Cache.L2, "bytes")
	t.Log("L3 Cache:", CPU.Cache.L3, "bytes")
	if CPU.LogicalCores > 0 && CPU.PhysicalCores > 0 {
		if CPU.LogicalCores != CPU.PhysicalCores*CPU.ThreadsPerCore {
			t.Fatalf("Core count mismatch, LogicalCores (%d) != PhysicalCores (%d) * CPU.ThreadsPerCore (%d)",
				CPU.LogicalCores, CPU.PhysicalCores, CPU.ThreadsPerCore)
		}
	}

	if CPU.ThreadsPerCore > 1 && !CPU.HTT() {
		t.Fatalf("Hyperthreading not detected")
	}
	if CPU.ThreadsPerCore == 1 && CPU.HTT() {
		t.Fatalf("Hyperthreading detected, but only 1 Thread per core")
	}
	restore()
	Detect()
	TestCPUID(t)
}
*/