1 /*
2 * Copyright (c) 2016, 2019, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2016, 2019 SAP SE. All rights reserved.
4 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
5 *
6 * This code is free software; you can redistribute it and/or modify it
7 * under the terms of the GNU General Public License version 2 only, as
8 * published by the Free Software Foundation.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "jvm.h"
28 #include "asm/assembler.inline.hpp"
29 #include "compiler/disassembler.hpp"
30 #include "code/compiledIC.hpp"
31 #include "memory/resourceArea.hpp"
32 #include "runtime/java.hpp"
33 #include "runtime/stubCodeGenerator.hpp"
34 #include "runtime/vm_version.hpp"
35
36 # include <sys/sysinfo.h>
37
38 bool VM_Version::_is_determine_features_test_running = false;
39 const char* VM_Version::_model_string;
40
41 unsigned long VM_Version::_features[_features_buffer_len] = {0, 0, 0, 0};
42 unsigned long VM_Version::_cipher_features[_features_buffer_len] = {0, 0, 0, 0};
43 unsigned long VM_Version::_msgdigest_features[_features_buffer_len] = {0, 0, 0, 0};
44 unsigned int VM_Version::_nfeatures = 0;
45 unsigned int VM_Version::_ncipher_features = 0;
46 unsigned int VM_Version::_nmsgdigest_features = 0;
47 unsigned int VM_Version::_Dcache_lineSize = DEFAULT_CACHE_LINE_SIZE;
48 unsigned int VM_Version::_Icache_lineSize = DEFAULT_CACHE_LINE_SIZE;
49
50 static const char* z_gen[] = {" ", "G1", "G2", "G3", "G4", "G5", "G6", "G7" };
51 static const char* z_machine[] = {" ", "2064", "2084", "2094", "2097", "2817", " ", "2964" };
52 static const char* z_name[] = {" ", "z900", "z990", "z9 EC", "z10 EC", "z196 EC", "ec12", "z13" };
53
54 void VM_Version::initialize() {
55 determine_features(); // Get processor capabilities.
56 set_features_string(); // Set a descriptive feature indication.
57
58 if (Verbose) {
59 print_features();
60 }
61
62 intx cache_line_size = Dcache_lineSize(0);
63
64 #ifdef COMPILER2
65 MaxVectorSize = 8;
66 #endif
67
68 if (has_PrefetchRaw()) {
69 if (FLAG_IS_DEFAULT(AllocatePrefetchStyle)) { // not preset
70 // 0 = no prefetch.
71 // 1 = Prefetch instructions for each allocation.
72 // 2 = Use TLAB watermark to gate allocation prefetch.
73 AllocatePrefetchStyle = 1;
74 }
75
76 if (AllocatePrefetchStyle > 0) { // Prefetching turned on at all?
77 // Distance to prefetch ahead of allocation pointer.
78 if (FLAG_IS_DEFAULT(AllocatePrefetchDistance) || (AllocatePrefetchDistance < 0)) { // not preset
79 AllocatePrefetchDistance = 0;
80 }
81
82 // Number of lines to prefetch ahead of allocation pointer.
83 if (FLAG_IS_DEFAULT(AllocatePrefetchLines) || (AllocatePrefetchLines <= 0)) { // not preset
84 AllocatePrefetchLines = 3;
85 }
86
87 // Step size in bytes of sequential prefetch instructions.
88 if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize) || (AllocatePrefetchStepSize <= 0)) { // not preset
89 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
90 } else if (AllocatePrefetchStepSize < cache_line_size) {
91 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
92 } else {
93 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
94 }
95 } else {
96 FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0);
97 AllocatePrefetchDistance = 0;
98 AllocatePrefetchLines = 0;
99 // Can't be zero. Will SIGFPE during constraints checking.
100 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
101 }
102
103 } else {
104 FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0);
105 AllocatePrefetchDistance = 0;
106 AllocatePrefetchLines = 0;
107 // Can't be zero. Will SIGFPE during constraints checking.
108 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
109 }
110
111 // TODO:
112 // On z/Architecture, cache line size is significantly large (256 bytes). Do we really need
113 // to keep contended members that far apart? Performance tests are required.
114 if (FLAG_IS_DEFAULT(ContendedPaddingWidth) && (cache_line_size > ContendedPaddingWidth)) {
115 ContendedPaddingWidth = cache_line_size;
116 }
117
118 // On z/Architecture, the CRC32/CRC32C intrinsics are implemented "by hand".
119 // TODO: Provide implementation based on the vector instructions available from z13.
120 // Note: The CHECKSUM instruction, which has been there since the very beginning
121 // (of z/Architecture), computes "some kind of" a checksum.
122 // It has nothing to do with the CRC32 algorithm.
123 if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
124 FLAG_SET_DEFAULT(UseCRC32Intrinsics, true);
125 }
126 if (FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) {
127 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, true);
128 }
129
130 // TODO: Provide implementation.
131 if (UseAdler32Intrinsics) {
132 warning("Adler32Intrinsics not available on this CPU.");
133 FLAG_SET_DEFAULT(UseAdler32Intrinsics, false);
134 }
135
136 // On z/Architecture, we take UseAES as the general switch to enable/disable the AES intrinsics.
137 // The specific, and yet to be defined, switches UseAESxxxIntrinsics will then be set
138 // depending on the actual machine capabilities.
139 // Explicitly setting them via CmdLine option takes precedence, of course.
140 // TODO: UseAESIntrinsics must be made keylength specific.
141 // As of March 2015 and Java8, only AES128 is supported by the Java Cryptographic Extensions.
142 // Therefore, UseAESIntrinsics is of minimal use at the moment.
143 if (FLAG_IS_DEFAULT(UseAES) && has_Crypto_AES()) {
144 FLAG_SET_DEFAULT(UseAES, true);
145 }
146 if (UseAES && !has_Crypto_AES()) {
147 warning("AES instructions are not available on this CPU");
148 FLAG_SET_DEFAULT(UseAES, false);
149 }
150 if (UseAES) {
151 if (FLAG_IS_DEFAULT(UseAESIntrinsics)) {
152 FLAG_SET_DEFAULT(UseAESIntrinsics, true);
153 }
154 }
155 if (UseAESIntrinsics && !has_Crypto_AES()) {
156 warning("AES intrinsics are not available on this CPU");
157 FLAG_SET_DEFAULT(UseAESIntrinsics, false);
158 }
159 if (UseAESIntrinsics && !UseAES) {
160 warning("AES intrinsics require UseAES flag to be enabled. Intrinsics will be disabled.");
161 FLAG_SET_DEFAULT(UseAESIntrinsics, false);
162 }
163
164 // TODO: implement AES/CTR intrinsics
165 if (UseAESCTRIntrinsics) {
166 warning("AES/CTR intrinsics are not available on this CPU");
167 FLAG_SET_DEFAULT(UseAESCTRIntrinsics, false);
168 }
169
170 if (FLAG_IS_DEFAULT(UseGHASHIntrinsics) && has_Crypto_GHASH()) {
171 FLAG_SET_DEFAULT(UseGHASHIntrinsics, true);
172 }
173 if (UseGHASHIntrinsics && !has_Crypto_GHASH()) {
174 warning("GHASH intrinsics are not available on this CPU");
175 FLAG_SET_DEFAULT(UseGHASHIntrinsics, false);
176 }
177
178 if (FLAG_IS_DEFAULT(UseFMA)) {
179 FLAG_SET_DEFAULT(UseFMA, true);
180 }
181
182 // On z/Architecture, we take UseSHA as the general switch to enable/disable the SHA intrinsics.
183 // The specific switches UseSHAxxxIntrinsics will then be set depending on the actual
184 // machine capabilities.
185 // Explicitly setting them via CmdLine option takes precedence, of course.
186 if (FLAG_IS_DEFAULT(UseSHA) && has_Crypto_SHA()) {
187 FLAG_SET_DEFAULT(UseSHA, true);
188 }
189 if (UseSHA && !has_Crypto_SHA()) {
190 warning("SHA instructions are not available on this CPU");
191 FLAG_SET_DEFAULT(UseSHA, false);
192 }
193 if (UseSHA && has_Crypto_SHA1()) {
194 if (FLAG_IS_DEFAULT(UseSHA1Intrinsics)) {
195 FLAG_SET_DEFAULT(UseSHA1Intrinsics, true);
196 }
197 } else if (UseSHA1Intrinsics) {
198 warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU.");
199 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
200 }
201 if (UseSHA && has_Crypto_SHA256()) {
202 if (FLAG_IS_DEFAULT(UseSHA256Intrinsics)) {
203 FLAG_SET_DEFAULT(UseSHA256Intrinsics, true);
204 }
205 } else if (UseSHA256Intrinsics) {
206 warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU.");
207 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
208 }
209 if (UseSHA && has_Crypto_SHA512()) {
210 if (FLAG_IS_DEFAULT(UseSHA512Intrinsics)) {
211 FLAG_SET_DEFAULT(UseSHA512Intrinsics, true);
212 }
213 } else if (UseSHA512Intrinsics) {
214 warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU.");
215 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
216 }
217
218 if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) {
219 FLAG_SET_DEFAULT(UseSHA, false);
220 }
221
222 #ifdef COMPILER2
223 if (FLAG_IS_DEFAULT(UseMultiplyToLenIntrinsic)) {
224 FLAG_SET_DEFAULT(UseMultiplyToLenIntrinsic, true);
225 }
226 if (FLAG_IS_DEFAULT(UseMontgomeryMultiplyIntrinsic)) {
227 FLAG_SET_DEFAULT(UseMontgomeryMultiplyIntrinsic, true);
228 }
229 if (FLAG_IS_DEFAULT(UseMontgomerySquareIntrinsic)) {
230 FLAG_SET_DEFAULT(UseMontgomerySquareIntrinsic, true);
231 }
232 #endif
233 if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
234 FLAG_SET_DEFAULT(UsePopCountInstruction, true);
235 }
236
237 // z/Architecture supports 8-byte compare-exchange operations
238 // (see Atomic::cmpxchg)
239 // and 'atomic long memory ops' (see Unsafe_GetLongVolatile).
240 _supports_cx8 = true;
241
242 _supports_atomic_getadd4 = VM_Version::has_LoadAndALUAtomicV1();
243 _supports_atomic_getadd8 = VM_Version::has_LoadAndALUAtomicV1();
244
245 // z/Architecture supports unaligned memory accesses.
246 // Performance penalty is negligible. An additional tick or so
247 // is lost if the accessed data spans a cache line boundary.
248 // Unaligned accesses are not atomic, of course.
249 if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
250 FLAG_SET_DEFAULT(UseUnalignedAccesses, true);
251 }
252 }
253
254
255 void VM_Version::set_features_string() {
256
257 unsigned int ambiguity = 0;
258 _model_string = z_name[0];
259 if (is_z13()) {
260 _features_string = "System z G7-z13 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update, TxM, VectorInstr)";
261 _model_string = z_name[7];
262 ambiguity++;
263 }
264 if (is_ec12()) {
265 _features_string = "System z G6-EC12 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update, TxM)";
266 _model_string = z_name[6];
267 ambiguity++;
268 }
269 if (is_z196()) {
270 _features_string = "System z G5-z196 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update)";
271 _model_string = z_name[5];
272 ambiguity++;
273 }
274 if (is_z10()) {
275 _features_string = "System z G4-z10 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB)";
276 _model_string = z_name[4];
277 ambiguity++;
278 }
279 if (is_z9()) {
280 _features_string = "System z G3-z9 (LDISP_fast, ExtImm), out-of-support as of 2016-04-01";
281 _model_string = z_name[3];
282 ambiguity++;
283 }
284 if (is_z990()) {
285 _features_string = "System z G2-z990 (LDISP_fast), out-of-support as of 2014-07-01";
286 _model_string = z_name[2];
287 ambiguity++;
288 }
289 if (is_z900()) {
290 _features_string = "System z G1-z900 (LDISP), out-of-support as of 2014-07-01";
291 _model_string = z_name[1];
292 ambiguity++;
293 }
294
295 if (ambiguity == 0) {
296 _features_string = "z/Architecture (unknown generation)";
297 } else if (ambiguity > 1) {
298 tty->print_cr("*** WARNING *** Ambiguous z/Architecture detection, ambiguity = %d", ambiguity);
299 tty->print_cr(" oldest detected generation is %s", _features_string);
300 _features_string = "z/Architecture (ambiguous detection)";
301 }
302
303 if (has_Crypto_AES()) {
304 char buf[256];
305 assert(strlen(_features_string) + 4 + 3*4 + 1 < sizeof(buf), "increase buffer size");
306 jio_snprintf(buf, sizeof(buf), "%s aes%s%s%s", // String 'aes' must be surrounded by spaces so that jtreg tests recognize it.
307 _features_string,
308 has_Crypto_AES128() ? " 128" : "",
309 has_Crypto_AES192() ? " 192" : "",
310 has_Crypto_AES256() ? " 256" : "");
311 _features_string = os::strdup(buf);
312 }
313
314 if (has_Crypto_SHA()) {
315 char buf[256];
316 assert(strlen(_features_string) + 4 + 2 + 2*4 + 6 + 1 < sizeof(buf), "increase buffer size");
317 // String 'sha1' etc must be surrounded by spaces so that jtreg tests recognize it.
318 jio_snprintf(buf, sizeof(buf), "%s %s%s%s%s",
319 _features_string,
320 has_Crypto_SHA1() ? " sha1" : "",
321 has_Crypto_SHA256() ? " sha256" : "",
322 has_Crypto_SHA512() ? " sha512" : "",
323 has_Crypto_GHASH() ? " ghash" : "");
324 if (has_Crypto_AES()) { os::free((void *)_features_string); }
325 _features_string = os::strdup(buf);
326 }
327 }
328
329 // featureBuffer - bit array indicating availability of various features
330 // featureNum - bit index of feature to be tested
331 // Featurenum < 0 requests test for any nonzero bit in featureBuffer.
332 // bufLen - length of featureBuffer in bits
333 bool VM_Version::test_feature_bit(unsigned long* featureBuffer, int featureNum, unsigned int bufLen) {
334 assert(bufLen > 0, "buffer len must be positive");
335 assert((bufLen & 0x0007) == 0, "unaligned buffer len");
336 assert(((intptr_t)featureBuffer&0x0007) == 0, "unaligned feature buffer");
337 if (featureNum < 0) {
338 // Any bit set at all?
339 bool anyBit = false;
340 for (size_t i = 0; i < bufLen/(8*sizeof(long)); i++) {
341 anyBit = anyBit || (featureBuffer[i] != 0);
342 }
343 return anyBit;
344 } else {
345 assert((unsigned int)featureNum < bufLen, "feature index out of range");
346 unsigned char* byteBuffer = (unsigned char*)featureBuffer;
347 int byteIndex = featureNum/(8*sizeof(char));
348 int bitIndex = featureNum%(8*sizeof(char));
349 // Indexed bit set?
350 return (byteBuffer[byteIndex] & (1U<<(7-bitIndex))) != 0;
351 }
352 }
353
354 void VM_Version::print_features_internal(const char* text, bool print_anyway) {
355 tty->print_cr("%s %s", text, features_string());
356 tty->print("%s", text);
357 for (unsigned int i = 0; i < _nfeatures; i++) {
358 tty->print(" 0x%16.16lx", _features[i]);
359 }
360 tty->cr();
361
362 if (Verbose || print_anyway) {
363 // z900
364 if (has_long_displacement() ) tty->print_cr("available: %s", "LongDispFacility");
365 // z990
366 if (has_long_displacement_fast() ) tty->print_cr("available: %s", "LongDispFacilityHighPerf");
367 if (has_ETF2() && has_ETF3() ) tty->print_cr("available: %s", "ETF2 and ETF3");
368 if (has_Crypto() ) tty->print_cr("available: %s", "CryptoFacility");
369 // z9
370 if (has_extended_immediate() ) tty->print_cr("available: %s", "ExtImmedFacility");
371 if (has_StoreFacilityListExtended()) tty->print_cr("available: %s", "StoreFacilityListExtended");
372 if (has_StoreClockFast() ) tty->print_cr("available: %s", "StoreClockFast");
373 if (has_ETF2Enhancements() ) tty->print_cr("available: %s", "ETF2 Enhancements");
374 if (has_ETF3Enhancements() ) tty->print_cr("available: %s", "ETF3 Enhancements");
375 if (has_HFPUnnormalized() ) tty->print_cr("available: %s", "HFPUnnormalizedFacility");
376 if (has_HFPMultiplyAndAdd() ) tty->print_cr("available: %s", "HFPMultiplyAndAddFacility");
377 // z10
378 if (has_ParsingEnhancements() ) tty->print_cr("available: %s", "Parsing Enhancements");
379 if (has_ExtractCPUtime() ) tty->print_cr("available: %s", "ExtractCPUTime");
380 if (has_CompareSwapStore() ) tty->print_cr("available: %s", "CompareSwapStore");
381 if (has_GnrlInstrExtensions() ) tty->print_cr("available: %s", "General Instruction Extensions");
382 if (has_CompareBranch() ) tty->print_cr(" available: %s", "Compare and Branch");
383 if (has_CompareTrap() ) tty->print_cr(" available: %s", "Compare and Trap");
384 if (has_RelativeLoadStore() ) tty->print_cr(" available: %s", "Relative Load/Store");
385 if (has_MultiplySingleImm32() ) tty->print_cr(" available: %s", "MultiplySingleImm32");
386 if (has_Prefetch() ) tty->print_cr(" available: %s", "Prefetch");
387 if (has_MoveImmToMem() ) tty->print_cr(" available: %s", "Direct Moves Immediate to Memory");
388 if (has_MemWithImmALUOps() ) tty->print_cr(" available: %s", "Direct ALU Ops Memory .op. Immediate");
389 if (has_ExtractCPUAttributes() ) tty->print_cr(" available: %s", "Extract CPU Atributes");
390 if (has_ExecuteExtensions() ) tty->print_cr("available: %s", "ExecuteExtensions");
391 if (has_FPSupportEnhancements() ) tty->print_cr("available: %s", "FPSupportEnhancements");
392 if (has_DecimalFloatingPoint() ) tty->print_cr("available: %s", "DecimalFloatingPoint");
393 // z196
394 if (has_DistinctOpnds() ) tty->print_cr("available: %s", "Distinct Operands");
395 if (has_InterlockedAccessV1() ) tty->print_cr(" available: %s", "InterlockedAccess V1 (fast)");
396 if (has_PopCount() ) tty->print_cr(" available: %s", "PopCount");
397 if (has_LoadStoreConditional() ) tty->print_cr(" available: %s", "LoadStoreConditional");
398 if (has_HighWordInstr() ) tty->print_cr(" available: %s", "HighWord Instructions");
399 if (has_FastSync() ) tty->print_cr(" available: %s", "FastSync (bcr 14,0)");
400 if (has_AtomicMemWithImmALUOps() ) tty->print_cr("available: %s", "Atomic Direct ALU Ops Memory .op. Immediate");
401 if (has_FPExtensions() ) tty->print_cr("available: %s", "Floatingpoint Extensions");
402 if (has_CryptoExt3() ) tty->print_cr("available: %s", "Crypto Extensions 3");
403 if (has_CryptoExt4() ) tty->print_cr("available: %s", "Crypto Extensions 4");
404 // EC12
405 if (has_MiscInstrExt() ) tty->print_cr("available: %s", "Miscelaneous Instruction Extensions");
406 if (has_ExecutionHint() ) tty->print_cr(" available: %s", "Execution Hints (branch prediction)");
407 if (has_ProcessorAssist() ) tty->print_cr(" available: %s", "Processor Assists");
408 if (has_LoadAndTrap() ) tty->print_cr(" available: %s", "Load and Trap");
409 if (has_TxMem() ) tty->print_cr("available: %s", "Transactional Memory");
410 if (has_InterlockedAccessV2() ) tty->print_cr(" available: %s", "InterlockedAccess V2 (fast)");
411 if (has_DFPZonedConversion() ) tty->print_cr(" available: %s", "DFP Zoned Conversions");
412 // z13
413 if (has_LoadStoreConditional2() ) tty->print_cr("available: %s", "Load/Store Conditional 2");
414 if (has_CryptoExt5() ) tty->print_cr("available: %s", "Crypto Extensions 5");
415 if (has_DFPPackedConversion() ) tty->print_cr("available: %s", "DFP Packed Conversions");
416 if (has_VectorFacility() ) tty->print_cr("available: %s", "Vector Facility");
417 // test switches
418 if (has_TestFeature1Impl() ) tty->print_cr("available: %s", "TestFeature1Impl");
419 if (has_TestFeature2Impl() ) tty->print_cr("available: %s", "TestFeature2Impl");
420 if (has_TestFeature4Impl() ) tty->print_cr("available: %s", "TestFeature4Impl");
421 if (has_TestFeature8Impl() ) tty->print_cr("available: %s", "TestFeature8Impl");
422
423 if (has_Crypto()) {
424 tty->cr();
425 tty->print_cr("detailed availability of %s capabilities:", "CryptoFacility");
426 if (test_feature_bit(&_cipher_features[0], -1, 2*Cipher::_featureBits)) {
427 tty->cr();
428 tty->print_cr(" available: %s", "Message Cipher Functions");
429 }
430 if (test_feature_bit(&_cipher_features[0], -1, (int)Cipher::_featureBits)) {
431 tty->print_cr(" available Crypto Features of KM (Cipher Message):");
432 for (unsigned int i = 0; i < Cipher::_featureBits; i++) {
433 if (test_feature_bit(&_cipher_features[0], i, (int)Cipher::_featureBits)) {
434 switch (i) {
435 case Cipher::_Query: tty->print_cr(" available: KM Query"); break;
436 case Cipher::_DEA: tty->print_cr(" available: KM DEA"); break;
437 case Cipher::_TDEA128: tty->print_cr(" available: KM TDEA-128"); break;
438 case Cipher::_TDEA192: tty->print_cr(" available: KM TDEA-192"); break;
439 case Cipher::_EncryptedDEA: tty->print_cr(" available: KM Encrypted DEA"); break;
440 case Cipher::_EncryptedDEA128: tty->print_cr(" available: KM Encrypted DEA-128"); break;
441 case Cipher::_EncryptedDEA192: tty->print_cr(" available: KM Encrypted DEA-192"); break;
442 case Cipher::_AES128: tty->print_cr(" available: KM AES-128"); break;
443 case Cipher::_AES192: tty->print_cr(" available: KM AES-192"); break;
444 case Cipher::_AES256: tty->print_cr(" available: KM AES-256"); break;
445 case Cipher::_EnccryptedAES128: tty->print_cr(" available: KM Encrypted-AES-128"); break;
446 case Cipher::_EnccryptedAES192: tty->print_cr(" available: KM Encrypted-AES-192"); break;
447 case Cipher::_EnccryptedAES256: tty->print_cr(" available: KM Encrypted-AES-256"); break;
448 case Cipher::_XTSAES128: tty->print_cr(" available: KM XTS-AES-128"); break;
449 case Cipher::_XTSAES256: tty->print_cr(" available: KM XTS-AES-256"); break;
450 case Cipher::_EncryptedXTSAES128: tty->print_cr(" available: KM XTS-Encrypted-AES-128"); break;
451 case Cipher::_EncryptedXTSAES256: tty->print_cr(" available: KM XTS-Encrypted-AES-256"); break;
452 default: tty->print_cr(" available: unknown KM code %d", i); break;
453 }
454 }
455 }
456 }
457 if (test_feature_bit(&_cipher_features[2], -1, (int)Cipher::_featureBits)) {
458 tty->print_cr(" available Crypto Features of KMC (Cipher Message with Chaining):");
459 for (unsigned int i = 0; i < Cipher::_featureBits; i++) {
460 if (test_feature_bit(&_cipher_features[2], i, (int)Cipher::_featureBits)) {
461 switch (i) {
462 case Cipher::_Query: tty->print_cr(" available: KMC Query"); break;
463 case Cipher::_DEA: tty->print_cr(" available: KMC DEA"); break;
464 case Cipher::_TDEA128: tty->print_cr(" available: KMC TDEA-128"); break;
465 case Cipher::_TDEA192: tty->print_cr(" available: KMC TDEA-192"); break;
466 case Cipher::_EncryptedDEA: tty->print_cr(" available: KMC Encrypted DEA"); break;
467 case Cipher::_EncryptedDEA128: tty->print_cr(" available: KMC Encrypted DEA-128"); break;
468 case Cipher::_EncryptedDEA192: tty->print_cr(" available: KMC Encrypted DEA-192"); break;
469 case Cipher::_AES128: tty->print_cr(" available: KMC AES-128"); break;
470 case Cipher::_AES192: tty->print_cr(" available: KMC AES-192"); break;
471 case Cipher::_AES256: tty->print_cr(" available: KMC AES-256"); break;
472 case Cipher::_EnccryptedAES128: tty->print_cr(" available: KMC Encrypted-AES-128"); break;
473 case Cipher::_EnccryptedAES192: tty->print_cr(" available: KMC Encrypted-AES-192"); break;
474 case Cipher::_EnccryptedAES256: tty->print_cr(" available: KMC Encrypted-AES-256"); break;
475 case Cipher::_PRNG: tty->print_cr(" available: KMC PRNG"); break;
476 default: tty->print_cr(" available: unknown KMC code %d", i); break;
477 }
478 }
479 }
480 }
481
482 if (test_feature_bit(&_msgdigest_features[0], -1, 2*MsgDigest::_featureBits)) {
483 tty->cr();
484 tty->print_cr(" available: %s", "Message Digest Functions for SHA");
485 }
486 if (test_feature_bit(&_msgdigest_features[0], -1, (int)MsgDigest::_featureBits)) {
487 tty->print_cr(" available Features of KIMD (Msg Digest):");
488 for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) {
489 if (test_feature_bit(&_msgdigest_features[0], i, (int)MsgDigest::_featureBits)) {
490 switch (i) {
491 case MsgDigest::_Query: tty->print_cr(" available: KIMD Query"); break;
492 case MsgDigest::_SHA1: tty->print_cr(" available: KIMD SHA-1"); break;
493 case MsgDigest::_SHA256: tty->print_cr(" available: KIMD SHA-256"); break;
494 case MsgDigest::_SHA512: tty->print_cr(" available: KIMD SHA-512"); break;
495 case MsgDigest::_GHASH: tty->print_cr(" available: KIMD GHASH"); break;
496 default: tty->print_cr(" available: unknown code %d", i); break;
497 }
498 }
499 }
500 }
501 if (test_feature_bit(&_msgdigest_features[2], -1, (int)MsgDigest::_featureBits)) {
502 tty->print_cr(" available Features of KLMD (Msg Digest):");
503 for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) {
504 if (test_feature_bit(&_msgdigest_features[2], i, (int)MsgDigest::_featureBits)) {
505 switch (i) {
506 case MsgDigest::_Query: tty->print_cr(" available: KLMD Query"); break;
507 case MsgDigest::_SHA1: tty->print_cr(" available: KLMD SHA-1"); break;
508 case MsgDigest::_SHA256: tty->print_cr(" available: KLMD SHA-256"); break;
509 case MsgDigest::_SHA512: tty->print_cr(" available: KLMD SHA-512"); break;
510 default: tty->print_cr(" available: unknown code %d", i); break;
511 }
512 }
513 }
514 }
515 }
516 if (ContendedPaddingWidth > 0) {
517 tty->cr();
518 tty->print_cr("ContendedPaddingWidth " INTX_FORMAT, ContendedPaddingWidth);
519 }
520 }
521 }
522
523 void VM_Version::print_platform_virtualization_info(outputStream* st) {
524 // /proc/sysinfo contains interesting information about
525 // - LPAR
526 // - whole "Box" (CPUs )
527 // - z/VM / KVM (VM<nn>); this is not available in an LPAR-only setup
528 const char* kw[] = { "LPAR", "CPUs", "VM", NULL };
529 const char* info_file = "/proc/sysinfo";
530
531 if (!print_matching_lines_from_file(info_file, st, kw)) {
532 st->print_cr(" <%s Not Available>", info_file);
533 }
534 }
535
536 void VM_Version::print_features() {
537 print_features_internal("Version:");
538 }
539
540 void VM_Version::reset_features(bool reset) {
541 if (reset) {
542 for (unsigned int i = 0; i < _features_buffer_len; i++) {
543 VM_Version::_features[i] = 0;
544 }
545 }
546 }
547
548 void VM_Version::set_features_z900(bool reset) {
549 reset_features(reset);
550
551 set_has_long_displacement();
552 set_has_ETF2();
553 }
554
555 void VM_Version::set_features_z990(bool reset) {
556 reset_features(reset);
557
558 set_features_z900(false);
559 set_has_ETF3();
560 set_has_long_displacement_fast();
561 set_has_HFPMultiplyAndAdd();
562 }
563
564 void VM_Version::set_features_z9(bool reset) {
565 reset_features(reset);
566
567 set_features_z990(false);
568 set_has_StoreFacilityListExtended();
569 // set_has_Crypto(); // Do not set, crypto features must be retrieved separately.
570 set_has_ETF2Enhancements();
571 set_has_ETF3Enhancements();
572 set_has_extended_immediate();
573 set_has_StoreClockFast();
574 set_has_HFPUnnormalized();
575 }
576
577 void VM_Version::set_features_z10(bool reset) {
578 reset_features(reset);
579
580 set_features_z9(false);
581 set_has_CompareSwapStore();
582 set_has_RelativeLoadStore();
583 set_has_CompareBranch();
584 set_has_CompareTrap();
585 set_has_MultiplySingleImm32();
586 set_has_Prefetch();
587 set_has_MoveImmToMem();
588 set_has_MemWithImmALUOps();
589 set_has_ExecuteExtensions();
590 set_has_FPSupportEnhancements();
591 set_has_DecimalFloatingPoint();
592 set_has_ExtractCPUtime();
593 set_has_CryptoExt3();
594 }
595
596 void VM_Version::set_features_z196(bool reset) {
597 reset_features(reset);
598
599 set_features_z10(false);
600 set_has_InterlockedAccessV1();
601 set_has_PopCount();
602 set_has_LoadStoreConditional();
603 set_has_HighWordInstr();
604 set_has_FastSync();
605 set_has_FPExtensions();
606 set_has_DistinctOpnds();
607 set_has_CryptoExt4();
608 }
609
610 void VM_Version::set_features_ec12(bool reset) {
611 reset_features(reset);
612
613 set_features_z196(false);
614 set_has_MiscInstrExt();
615 set_has_InterlockedAccessV2();
616 set_has_LoadAndALUAtomicV2();
617 set_has_TxMem();
618 }
619
620 void VM_Version::set_features_z13(bool reset) {
621 reset_features(reset);
622
623 set_features_ec12(false);
624 set_has_LoadStoreConditional2();
625 set_has_CryptoExt5();
626 set_has_VectorFacility();
627 }
628
629 void VM_Version::set_features_from(const char* march) {
630 bool err = false;
631 bool prt = false;
632
633 if ((march != NULL) && (march[0] != '\0')) {
634 const int buf_len = 16;
635 const int hdr_len = 5;
636 char buf[buf_len];
637 if (strlen(march) >= hdr_len) {
638 memcpy(buf, march, hdr_len);
639 buf[hdr_len] = '\00';
640 } else {
641 buf[0] = '\00';
642 }
643
644 if (!strcmp(march, "z900")) {
645 set_features_z900();
646 } else if (!strcmp(march, "z990")) {
647 set_features_z990();
648 } else if (!strcmp(march, "z9")) {
649 set_features_z9();
650 } else if (!strcmp(march, "z10")) {
651 set_features_z10();
652 } else if (!strcmp(march, "z196")) {
653 set_features_z196();
654 } else if (!strcmp(march, "ec12")) {
655 set_features_ec12();
656 } else if (!strcmp(march, "z13")) {
657 set_features_z13();
658 } else if (!strcmp(buf, "ztest")) {
659 assert(!has_TestFeaturesImpl(), "possible facility list flag conflict");
660 if (strlen(march) > hdr_len) {
661 int itest = 0;
662 if ((strlen(march)-hdr_len) >= buf_len) err = true;
663 if (!err) {
664 memcpy(buf, &march[hdr_len], strlen(march)-hdr_len);
665 buf[strlen(march)-hdr_len] = '\00';
666 for (size_t i = 0; !err && (i < strlen(buf)); i++) {
667 itest = itest*10 + buf[i]-'0';
668 err = err || ((buf[i]-'0') < 0) || ((buf[i]-'0') > 9) || (itest > 15);
669 }
670 }
671 if (!err) {
672 prt = true;
673 if (itest & 0x01) { set_has_TestFeature1Impl(); }
674 if (itest & 0x02) { set_has_TestFeature2Impl(); }
675 if (itest & 0x04) { set_has_TestFeature4Impl(); }
676 if (itest & 0x08) { set_has_TestFeature8Impl(); }
677 }
678 } else {
679 prt = true;
680 set_has_TestFeature1Impl();
681 set_has_TestFeature2Impl();
682 set_has_TestFeature4Impl();
683 set_has_TestFeature8Impl();
684 }
685 } else {
686 err = true;
687 }
688 if (!err) {
689 set_features_string();
690 if (prt || PrintAssembly) {
691 print_features_internal("CPU Version as set by cmdline option:", prt);
692 }
693 } else {
694 tty->print_cr("***Warning: Unsupported ProcessorArchitecture: %s, internal settings left undisturbed.", march);
695 }
696 }
697
698 }
699
700 static long (*getFeatures)(unsigned long*, int, int) = NULL;
701
702 void VM_Version::set_getFeatures(address entryPoint) {
703 if (getFeatures == NULL) {
704 getFeatures = (long(*)(unsigned long*, int, int))entryPoint;
705 }
706 }
707
708 long VM_Version::call_getFeatures(unsigned long* buffer, int buflen, int functionCode) {
709 VM_Version::_is_determine_features_test_running = true;
710 long functionResult = (*getFeatures)(buffer, buflen, functionCode);
711 VM_Version::_is_determine_features_test_running = false;
712 return functionResult;
713 }
714
715 // Helper function for "extract cache attribute" instruction.
716 int VM_Version::calculate_ECAG_functionCode(unsigned int attributeIndication,
717 unsigned int levelIndication,
718 unsigned int typeIndication) {
719 return (attributeIndication<<4) | (levelIndication<<1) | typeIndication;
720 }
721
722 void VM_Version::determine_features() {
723
724 const int cbuf_size = _code_buffer_len;
725 const int buf_len = _features_buffer_len;
726
727 // Allocate code buffer space for the detection code.
728 ResourceMark rm;
729 CodeBuffer cbuf("determine CPU features", cbuf_size, 0);
730 MacroAssembler* a = new MacroAssembler(&cbuf);
731
732 // Emit code.
733 set_getFeatures(a->pc());
734 address code = a->pc();
735
736 // Try STFLE. Possible INVOP will cause defaults to be used.
737 Label getFEATURES;
738 Label getCPUFEATURES; // fcode = -1 (cache)
739 Label getCIPHERFEATURES; // fcode = -2 (cipher)
740 Label getMSGDIGESTFEATURES; // fcode = -3 (SHA)
741 Label getVECTORFEATURES; // fcode = -4 (OS support for vector instructions)
742 Label errRTN;
743 a->z_ltgfr(Z_R0, Z_ARG2); // Buf len to r0 and test.
744 a->z_brl(getFEATURES); // negative -> Get machine features not covered by facility list.
745 a->z_lghi(Z_R1,0);
746 a->z_brz(errRTN); // zero -> Function code currently not used, indicate "aborted".
747
748 a->z_aghi(Z_R0, -1);
749 a->z_stfle(0, Z_ARG1);
750 a->z_lg(Z_R1, 0, Z_ARG1); // Get first DW of facility list.
751 a->z_lgr(Z_RET, Z_R0); // Calculate rtn value for success.
752 a->z_la(Z_RET, 1, Z_RET);
753 a->z_brnz(errRTN); // Instr failed if non-zero CC.
754 a->z_ltgr(Z_R1, Z_R1); // Instr failed if first DW == 0.
755 a->z_bcr(Assembler::bcondNotZero, Z_R14); // Successful return.
756
757 a->bind(errRTN);
758 a->z_lngr(Z_RET, Z_RET);
759 a->z_ltgr(Z_R1, Z_R1);
760 a->z_bcr(Assembler::bcondNotZero, Z_R14); // Return "buffer too small".
761 a->z_xgr(Z_RET, Z_RET);
762 a->z_br(Z_R14); // Return "operation aborted".
763
764 a->bind(getFEATURES);
765 a->z_cghi(Z_R0, -1); // -1: Extract CPU attributes, currently: cache layout only.
766 a->z_bre(getCPUFEATURES);
767 a->z_cghi(Z_R0, -2); // -2: Extract detailed crypto capabilities (cipher instructions).
768 a->z_bre(getCIPHERFEATURES);
769 a->z_cghi(Z_R0, -3); // -3: Extract detailed crypto capabilities (msg digest instructions).
770 a->z_bre(getMSGDIGESTFEATURES);
771 a->z_cghi(Z_R0, -4); // -4: Verify vector instruction availability (OS support).
772 a->z_bre(getVECTORFEATURES);
773
774 a->z_xgr(Z_RET, Z_RET); // Not a valid function code.
775 a->z_br(Z_R14); // Return "operation aborted".
776
777 // Try KIMD/KLMD query function to get details about msg digest (secure hash, SHA) instructions.
778 a->bind(getMSGDIGESTFEATURES);
779 a->z_lghi(Z_R0,(int)MsgDigest::_Query); // query function code
780 a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size
781 a->z_kimd(Z_R2,Z_R2); // Get available KIMD functions (bit pattern in param blk).
782 a->z_la(Z_R1,16,Z_R1); // next param block addr
783 a->z_klmd(Z_R2,Z_R2); // Get available KLMD functions (bit pattern in param blk).
784 a->z_lghi(Z_RET,4);
785 a->z_br(Z_R14);
786
787 // Try KM/KMC query function to get details about crypto instructions.
788 a->bind(getCIPHERFEATURES);
789 a->z_lghi(Z_R0,(int)Cipher::_Query); // query function code
790 a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size (KIMD/KLMD output)
791 a->z_km(Z_R2,Z_R2); // get available KM functions
792 a->z_la(Z_R1,16,Z_R1); // next param block addr
793 a->z_kmc(Z_R2,Z_R2); // get available KMC functions
794 a->z_lghi(Z_RET,4);
795 a->z_br(Z_R14);
796
797 // Use EXTRACT CPU ATTRIBUTE instruction to get information about cache layout.
798 a->bind(getCPUFEATURES);
799 a->z_xgr(Z_R0,Z_R0); // as recommended in instruction documentation
800 a->z_ecag(Z_RET,Z_R0,0,Z_ARG3); // Extract information as requested by Z_ARG1 contents.
801 a->z_br(Z_R14);
802
803 // Use a vector instruction to verify OS support. Will fail with SIGFPE if OS support is missing.
804 a->bind(getVECTORFEATURES);
805 a->z_vtm(Z_V0,Z_V0); // non-destructive vector instruction. Will cause SIGFPE if not supported.
806 a->z_br(Z_R14);
807
808 address code_end = a->pc();
809 a->flush();
810
811 cbuf.insts()->set_end(code_end);
812
813 // Print the detection code.
814 bool printVerbose = Verbose || PrintAssembly || PrintStubCode;
815 if (printVerbose) {
816 ttyLocker ttyl;
817 tty->print_cr("Decoding CPU feature detection stub at " INTPTR_FORMAT " before execution:", p2i(code));
818 tty->print_cr("Stub length is %ld bytes, codebuffer reserves %d bytes, %ld bytes spare.",
819 code_end-code, cbuf_size, cbuf_size-(code_end-code));
820
821 // Use existing decode function. This enables the [MachCode] format which is needed to DecodeErrorFile.
822 Disassembler::decode(&cbuf, code, code_end, tty);
823 }
824
825 // Prepare for detection code execution and clear work buffer.
826 _nfeatures = 0;
827 _ncipher_features = 0;
828 unsigned long buffer[buf_len];
829
830 for (int i = 0; i < buf_len; i++) {
831 buffer[i] = 0L;
832 }
833
834 // execute code
835 // Illegal instructions will be replaced by 0 in signal handler.
836 // In case of problems, call_getFeatures will return a not-positive result.
837 long used_len = call_getFeatures(buffer, buf_len, 0);
838
839 bool ok;
840 if (used_len == 1) {
841 ok = true;
842 } else if (used_len > 1) {
843 unsigned int used_lenU = (unsigned int)used_len;
844 ok = true;
845 for (unsigned int i = 1; i < used_lenU; i++) {
846 ok = ok && (buffer[i] == 0L);
847 }
848 if (printVerbose && !ok) {
849 bool compact = false;
850 tty->print_cr("Note: feature list has %d (i.e. more than one) array elements.", used_lenU);
851 if (compact) {
852 tty->print("non-zero feature list elements:");
853 for (unsigned int i = 0; i < used_lenU; i++) {
854 tty->print(" [%d]: 0x%16.16lx", i, buffer[i]);
855 }
856 tty->cr();
857 } else {
858 for (unsigned int i = 0; i < used_lenU; i++) {
859 tty->print_cr("non-zero feature list[%d]: 0x%16.16lx", i, buffer[i]);
860 }
861 }
862
863 if (compact) {
864 tty->print_cr("Active features (compact view):");
865 for (unsigned int k = 0; k < used_lenU; k++) {
866 tty->print_cr(" buffer[%d]:", k);
867 for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) {
868 bool line = false;
869 for (unsigned int i = j*8; i < (j+1)*8; i++) {
870 bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8);
871 if (bit) {
872 if (!line) {
873 tty->print(" byte[%d]:", j);
874 line = true;
875 }
876 tty->print(" [%3.3d]", i);
877 }
878 }
879 if (line) {
880 tty->cr();
881 }
882 }
883 }
884 } else {
885 tty->print_cr("Active features (full view):");
886 for (unsigned int k = 0; k < used_lenU; k++) {
887 tty->print_cr(" buffer[%d]:", k);
888 for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) {
889 tty->print(" byte[%d]:", j);
890 for (unsigned int i = j*8; i < (j+1)*8; i++) {
891 bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8);
892 if (bit) {
893 tty->print(" [%3.3d]", i);
894 } else {
895 tty->print(" ");
896 }
897 }
898 tty->cr();
899 }
900 }
901 }
902 }
903 ok = true;
904 } else { // No features retrieved if we reach here. Buffer too short or instr not available.
905 if (used_len < 0) {
906 ok = false;
907 if (printVerbose) {
908 tty->print_cr("feature list buffer[%d] too short, required: buffer[%ld]", buf_len, -used_len);
909 }
910 } else {
911 if (printVerbose) {
912 tty->print_cr("feature list could not be retrieved. Running on z900 or z990? Trying to find out...");
913 }
914 used_len = call_getFeatures(buffer, 0, 0); // Must provide at least two DW buffer elements!!!!
915
916 ok = used_len > 0;
917 if (ok) {
918 if (buffer[1]*10 < buffer[0]) {
919 set_features_z900();
920 } else {
921 set_features_z990();
922 }
923
924 if (printVerbose) {
925 tty->print_cr("Note: high-speed long displacement test used %ld iterations.", used_len);
926 tty->print_cr(" Positive displacement loads took %8.8lu microseconds.", buffer[1]);
927 tty->print_cr(" Negative displacement loads took %8.8lu microseconds.", buffer[0]);
928 if (has_long_displacement_fast()) {
929 tty->print_cr(" assuming high-speed long displacement IS available.");
930 } else {
931 tty->print_cr(" assuming high-speed long displacement is NOT available.");
932 }
933 }
934 } else {
935 if (printVerbose) {
936 tty->print_cr("Note: high-speed long displacement test was not successful.");
937 tty->print_cr(" assuming long displacement is NOT available.");
938 }
939 }
940 return; // Do not copy buffer to _features, no test for cipher features.
941 }
942 }
943
944 if (ok) {
945 // Fill features buffer.
946 // Clear work buffer.
947 for (int i = 0; i < buf_len; i++) {
948 _features[i] = buffer[i];
949 _cipher_features[i] = 0;
950 _msgdigest_features[i] = 0;
951 buffer[i] = 0L;
952 }
953 _nfeatures = used_len;
954 } else {
955 for (int i = 0; i < buf_len; i++) {
956 _features[i] = 0;
957 _cipher_features[i] = 0;
958 _msgdigest_features[i] = 0;
959 buffer[i] = 0L;
960 }
961 _nfeatures = 0;
962 }
963
964 if (has_VectorFacility()) {
965 // Verify that feature can actually be used. OS support required.
966 call_getFeatures(buffer, -4, 0);
967 if (printVerbose) {
968 ttyLocker ttyl;
969 if (has_VectorFacility()) {
970 tty->print_cr(" Vector Facility has been verified to be supported by OS");
971 } else {
972 tty->print_cr(" Vector Facility has been disabled - not supported by OS");
973 }
974 }
975 }
976
977 // Extract Crypto Facility details.
978 if (has_Crypto()) {
979 // Get cipher features.
980 used_len = call_getFeatures(buffer, -2, 0);
981 for (int i = 0; i < buf_len; i++) {
982 _cipher_features[i] = buffer[i];
983 }
984 _ncipher_features = used_len;
985
986 // Get msg digest features.
987 used_len = call_getFeatures(buffer, -3, 0);
988 for (int i = 0; i < buf_len; i++) {
989 _msgdigest_features[i] = buffer[i];
990 }
991 _nmsgdigest_features = used_len;
992 }
993
994 static int levelProperties[_max_cache_levels]; // All property indications per level.
995 static int levelScope[_max_cache_levels]; // private/shared
996 static const char* levelScopeText[4] = {"No cache ",
997 "CPU private",
998 "shared ",
999 "reserved "};
1000
1001 static int levelType[_max_cache_levels]; // D/I/mixed
1002 static const char* levelTypeText[4] = {"separate D and I caches",
1003 "I cache only ",
1004 "D-cache only ",
1005 "combined D/I cache "};
1006
1007 static unsigned int levelReserved[_max_cache_levels]; // reserved property bits
1008 static unsigned int levelLineSize[_max_cache_levels];
1009 static unsigned int levelTotalSize[_max_cache_levels];
1010 static unsigned int levelAssociativity[_max_cache_levels];
1011
1012
1013 // Extract Cache Layout details.
1014 if (has_ExtractCPUAttributes() && printVerbose) { // For information only, as of now.
1015 bool lineSize_mismatch;
1016 bool print_something;
1017 long functionResult;
1018 unsigned int attributeIndication = 0; // 0..15
1019 unsigned int levelIndication = 0; // 0..8
1020 unsigned int typeIndication = 0; // 0..1 (D-Cache, I-Cache)
1021 int functionCode = calculate_ECAG_functionCode(attributeIndication, levelIndication, typeIndication);
1022
1023 // Get cache topology.
1024 functionResult = call_getFeatures(buffer, -1, functionCode);
1025
1026 for (unsigned int i = 0; i < _max_cache_levels; i++) {
1027 if (functionResult > 0) {
1028 int shiftVal = 8*(_max_cache_levels-(i+1));
1029 levelProperties[i] = (functionResult & (0xffUL<<shiftVal)) >> shiftVal;
1030 levelReserved[i] = (levelProperties[i] & 0xf0) >> 4;
1031 levelScope[i] = (levelProperties[i] & 0x0c) >> 2;
1032 levelType[i] = (levelProperties[i] & 0x03);
1033 } else {
1034 levelProperties[i] = 0;
1035 levelReserved[i] = 0;
1036 levelScope[i] = 0;
1037 levelType[i] = 0;
1038 }
1039 levelLineSize[i] = 0;
1040 levelTotalSize[i] = 0;
1041 levelAssociativity[i] = 0;
1042 }
1043
1044 tty->cr();
1045 tty->print_cr("------------------------------------");
1046 tty->print_cr("--- Cache Topology Information ---");
1047 tty->print_cr("------------------------------------");
1048 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1049 tty->print_cr(" Cache Level %d: <scope> %s | <type> %s",
1050 i+1, levelScopeText[levelScope[i]], levelTypeText[levelType[i]]);
1051 }
1052
1053 // Get D-cache details per level.
1054 _Dcache_lineSize = 0;
1055 lineSize_mismatch = false;
1056 print_something = false;
1057 typeIndication = 0; // 0..1 (D-Cache, I-Cache)
1058 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1059 if ((levelType[i] == 0) || (levelType[i] == 2)) {
1060 print_something = true;
1061
1062 // Get cache line size of level i.
1063 attributeIndication = 1;
1064 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1065 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1066
1067 // Get cache total size of level i.
1068 attributeIndication = 2;
1069 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1070 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1071
1072 // Get cache associativity of level i.
1073 attributeIndication = 3;
1074 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1075 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1076
1077 _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize;
1078 lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i]);
1079 } else {
1080 levelLineSize[i] = 0;
1081 }
1082 }
1083
1084 if (print_something) {
1085 tty->cr();
1086 tty->print_cr("------------------------------------");
1087 tty->print_cr("--- D-Cache Detail Information ---");
1088 tty->print_cr("------------------------------------");
1089 if (lineSize_mismatch) {
1090 tty->print_cr("WARNING: D-Cache line size mismatch!");
1091 }
1092 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1093 if (levelLineSize[i] > 0) {
1094 tty->print_cr(" D-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d",
1095 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]);
1096 }
1097 }
1098 }
1099
1100 // Get I-cache details per level.
1101 _Icache_lineSize = 0;
1102 lineSize_mismatch = false;
1103 print_something = false;
1104 typeIndication = 1; // 0..1 (D-Cache, I-Cache)
1105 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1106 if ((levelType[i] == 0) || (levelType[i] == 1)) {
1107 print_something = true;
1108
1109 // Get cache line size of level i.
1110 attributeIndication = 1;
1111 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1112 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1113
1114 // Get cache total size of level i.
1115 attributeIndication = 2;
1116 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1117 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1118
1119 // Get cache associativity of level i.
1120 attributeIndication = 3;
1121 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1122 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1123
1124 _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize;
1125 lineSize_mismatch = lineSize_mismatch || (_Icache_lineSize != levelLineSize[i]);
1126 } else {
1127 levelLineSize[i] = 0;
1128 }
1129 }
1130
1131 if (print_something) {
1132 tty->cr();
1133 tty->print_cr("------------------------------------");
1134 tty->print_cr("--- I-Cache Detail Information ---");
1135 tty->print_cr("------------------------------------");
1136 if (lineSize_mismatch) {
1137 tty->print_cr("WARNING: I-Cache line size mismatch!");
1138 }
1139 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1140 if (levelLineSize[i] > 0) {
1141 tty->print_cr(" I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d",
1142 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]);
1143 }
1144 }
1145 }
1146
1147 // Get D/I-cache details per level.
1148 lineSize_mismatch = false;
1149 print_something = false;
1150 typeIndication = 0; // 0..1 (D-Cache, I-Cache)
1151 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1152 if (levelType[i] == 3) {
1153 print_something = true;
1154
1155 // Get cache line size of level i.
1156 attributeIndication = 1;
1157 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1158 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1159
1160 // Get cache total size of level i.
1161 attributeIndication = 2;
1162 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1163 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1164
1165 // Get cache associativity of level i.
1166 attributeIndication = 3;
1167 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1168 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1169
1170 _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize;
1171 _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize;
1172 lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i])
1173 || (_Icache_lineSize != levelLineSize[i]);
1174 } else {
1175 levelLineSize[i] = 0;
1176 }
1177 }
1178
1179 if (print_something) {
1180 tty->cr();
1181 tty->print_cr("--------------------------------------");
1182 tty->print_cr("--- D/I-Cache Detail Information ---");
1183 tty->print_cr("--------------------------------------");
1184 if (lineSize_mismatch) {
1185 tty->print_cr("WARNING: D/I-Cache line size mismatch!");
1186 }
1187 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1188 if (levelLineSize[i] > 0) {
1189 tty->print_cr(" D/I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d",
1190 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]);
1191 }
1192 }
1193 }
1194 tty->cr();
1195 }
1196 return;
1197 }
1198
1199 unsigned long VM_Version::z_SIGILL() {
1200 unsigned long ZeroBuffer = 0;
1201 unsigned long work;
1202 asm(
1203 " LA %[work],%[buffer] \n\t" // Load address of buffer.
1204 " LARL 14,+6 \n\t" // Load address of faulting instruction.
1205 " BCR 15,%[work] \n\t" // Branch into buffer, execute whatever is in there.
1206 : [buffer] "+Q" (ZeroBuffer) /* outputs */
1207 , [work] "=&a" (work) /* outputs */
1208 : /* inputs */
1209 : "cc" /* clobbered */
1210 );
1211 return ZeroBuffer;
1212 }
1213
1214 unsigned long VM_Version::z_SIGSEGV() {
1215 unsigned long ZeroBuffer = 0;
1216 unsigned long work;
1217 asm(
1218 " LG %[work],%[buffer] \n\t" // Load zero address.
1219 " STG %[work],0(,%[work])\n\t" // Store to address zero.
1220 : [buffer] "+Q" (ZeroBuffer) /* outputs */
1221 , [work] "=&a" (work) /* outputs */
1222 : /* inputs */
1223 : "cc" /* clobbered */
1224 );
1225 return ZeroBuffer;
1226 }
1227