1 /*
2 * Copyright (c) 2016, 2018, Oracle and/or its affiliates. All rights reserved.
3 * Copyright (c) 2016, 2018 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 "vm_version_s390.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 = 256;
48 unsigned int VM_Version::_Icache_lineSize = 256;
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 MaxVectorSize = 8;
65
66 if (has_PrefetchRaw()) {
67 if (FLAG_IS_DEFAULT(AllocatePrefetchStyle)) { // not preset
68 // 0 = no prefetch.
69 // 1 = Prefetch instructions for each allocation.
70 // 2 = Use TLAB watermark to gate allocation prefetch.
71 AllocatePrefetchStyle = 1;
72 }
73
74 if (AllocatePrefetchStyle > 0) { // Prefetching turned on at all?
75 // Distance to prefetch ahead of allocation pointer.
76 if (FLAG_IS_DEFAULT(AllocatePrefetchDistance) || (AllocatePrefetchDistance < 0)) { // not preset
77 AllocatePrefetchDistance = 0;
78 }
79
80 // Number of lines to prefetch ahead of allocation pointer.
81 if (FLAG_IS_DEFAULT(AllocatePrefetchLines) || (AllocatePrefetchLines <= 0)) { // not preset
82 AllocatePrefetchLines = 3;
83 }
84
85 // Step size in bytes of sequential prefetch instructions.
86 if (FLAG_IS_DEFAULT(AllocatePrefetchStepSize) || (AllocatePrefetchStepSize <= 0)) { // not preset
87 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
88 } else if (AllocatePrefetchStepSize < cache_line_size) {
89 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
90 } else {
91 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
92 }
93 } else {
94 FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0);
95 AllocatePrefetchDistance = 0;
96 AllocatePrefetchLines = 0;
97 // Can't be zero. Will SIGFPE during constraints checking.
98 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
99 }
100
101 } else {
102 FLAG_SET_DEFAULT(AllocatePrefetchStyle, 0);
103 AllocatePrefetchDistance = 0;
104 AllocatePrefetchLines = 0;
105 // Can't be zero. Will SIGFPE during constraints checking.
106 FLAG_SET_DEFAULT(AllocatePrefetchStepSize, cache_line_size);
107 }
108
109 // TODO:
110 // On z/Architecture, cache line size is significantly large (256 bytes). Do we really need
111 // to keep contended members that far apart? Performance tests are required.
112 if (FLAG_IS_DEFAULT(ContendedPaddingWidth) && (cache_line_size > ContendedPaddingWidth)) {
113 ContendedPaddingWidth = cache_line_size;
114 }
115
116 // On z/Architecture, the CRC32/CRC32C intrinsics are implemented "by hand".
117 // TODO: Provide implementation based on the vector instructions available from z13.
118 // Note: The CHECKSUM instruction, which has been there since the very beginning
119 // (of z/Architecture), computes "some kind of" a checksum.
120 // It has nothing to do with the CRC32 algorithm.
121 if (FLAG_IS_DEFAULT(UseCRC32Intrinsics)) {
122 FLAG_SET_DEFAULT(UseCRC32Intrinsics, true);
123 }
124 if (FLAG_IS_DEFAULT(UseCRC32CIntrinsics)) {
125 FLAG_SET_DEFAULT(UseCRC32CIntrinsics, true);
126 }
127
128 // TODO: Provide implementation.
129 if (UseAdler32Intrinsics) {
130 warning("Adler32Intrinsics not available on this CPU.");
131 FLAG_SET_DEFAULT(UseAdler32Intrinsics, false);
132 }
133
134 // On z/Architecture, we take UseAES as the general switch to enable/disable the AES intrinsics.
135 // The specific, and yet to be defined, switches UseAESxxxIntrinsics will then be set
136 // depending on the actual machine capabilities.
137 // Explicitly setting them via CmdLine option takes precedence, of course.
138 // TODO: UseAESIntrinsics must be made keylength specific.
139 // As of March 2015 and Java8, only AES128 is supported by the Java Cryptographic Extensions.
140 // Therefore, UseAESIntrinsics is of minimal use at the moment.
141 if (FLAG_IS_DEFAULT(UseAES) && has_Crypto_AES()) {
142 FLAG_SET_DEFAULT(UseAES, true);
143 }
144 if (UseAES && !has_Crypto_AES()) {
145 warning("AES instructions are not available on this CPU");
146 FLAG_SET_DEFAULT(UseAES, false);
147 }
148 if (UseAES) {
149 if (FLAG_IS_DEFAULT(UseAESIntrinsics)) {
150 FLAG_SET_DEFAULT(UseAESIntrinsics, true);
151 }
152 }
153 if (UseAESIntrinsics && !has_Crypto_AES()) {
154 warning("AES intrinsics are not available on this CPU");
155 FLAG_SET_DEFAULT(UseAESIntrinsics, false);
156 }
157 if (UseAESIntrinsics && !UseAES) {
158 warning("AES intrinsics require UseAES flag to be enabled. Intrinsics will be disabled.");
159 FLAG_SET_DEFAULT(UseAESIntrinsics, false);
160 }
161
162 // TODO: implement AES/CTR intrinsics
163 if (UseAESCTRIntrinsics) {
164 warning("AES/CTR intrinsics are not available on this CPU");
165 FLAG_SET_DEFAULT(UseAESCTRIntrinsics, false);
166 }
167
168 // TODO: implement GHASH intrinsics
169 if (UseGHASHIntrinsics) {
170 warning("GHASH intrinsics are not available on this CPU");
171 FLAG_SET_DEFAULT(UseGHASHIntrinsics, false);
172 }
173
174 if (FLAG_IS_DEFAULT(UseFMA)) {
175 FLAG_SET_DEFAULT(UseFMA, true);
176 }
177
178 // On z/Architecture, we take UseSHA as the general switch to enable/disable the SHA intrinsics.
179 // The specific switches UseSHAxxxIntrinsics will then be set depending on the actual
180 // machine capabilities.
181 // Explicitly setting them via CmdLine option takes precedence, of course.
182 if (FLAG_IS_DEFAULT(UseSHA) && has_Crypto_SHA()) {
183 FLAG_SET_DEFAULT(UseSHA, true);
184 }
185 if (UseSHA && !has_Crypto_SHA()) {
186 warning("SHA instructions are not available on this CPU");
187 FLAG_SET_DEFAULT(UseSHA, false);
188 }
189 if (UseSHA && has_Crypto_SHA1()) {
190 if (FLAG_IS_DEFAULT(UseSHA1Intrinsics)) {
191 FLAG_SET_DEFAULT(UseSHA1Intrinsics, true);
192 }
193 } else if (UseSHA1Intrinsics) {
194 warning("Intrinsics for SHA-1 crypto hash functions not available on this CPU.");
195 FLAG_SET_DEFAULT(UseSHA1Intrinsics, false);
196 }
197 if (UseSHA && has_Crypto_SHA256()) {
198 if (FLAG_IS_DEFAULT(UseSHA256Intrinsics)) {
199 FLAG_SET_DEFAULT(UseSHA256Intrinsics, true);
200 }
201 } else if (UseSHA256Intrinsics) {
202 warning("Intrinsics for SHA-224 and SHA-256 crypto hash functions not available on this CPU.");
203 FLAG_SET_DEFAULT(UseSHA256Intrinsics, false);
204 }
205 if (UseSHA && has_Crypto_SHA512()) {
206 if (FLAG_IS_DEFAULT(UseSHA512Intrinsics)) {
207 FLAG_SET_DEFAULT(UseSHA512Intrinsics, true);
208 }
209 } else if (UseSHA512Intrinsics) {
210 warning("Intrinsics for SHA-384 and SHA-512 crypto hash functions not available on this CPU.");
211 FLAG_SET_DEFAULT(UseSHA512Intrinsics, false);
212 }
213
214 if (!(UseSHA1Intrinsics || UseSHA256Intrinsics || UseSHA512Intrinsics)) {
215 FLAG_SET_DEFAULT(UseSHA, false);
216 }
217
218 if (FLAG_IS_DEFAULT(UseMultiplyToLenIntrinsic)) {
219 FLAG_SET_DEFAULT(UseMultiplyToLenIntrinsic, true);
220 }
221 if (FLAG_IS_DEFAULT(UseMontgomeryMultiplyIntrinsic)) {
222 FLAG_SET_DEFAULT(UseMontgomeryMultiplyIntrinsic, true);
223 }
224 if (FLAG_IS_DEFAULT(UseMontgomerySquareIntrinsic)) {
225 FLAG_SET_DEFAULT(UseMontgomerySquareIntrinsic, true);
226 }
227 if (FLAG_IS_DEFAULT(UsePopCountInstruction)) {
228 FLAG_SET_DEFAULT(UsePopCountInstruction, true);
229 }
230
231 // z/Architecture supports 8-byte compare-exchange operations
232 // (see Atomic::cmpxchg)
233 // and 'atomic long memory ops' (see Unsafe_GetLongVolatile).
234 _supports_cx8 = true;
235
236 _supports_atomic_getadd4 = VM_Version::has_LoadAndALUAtomicV1();
237 _supports_atomic_getadd8 = VM_Version::has_LoadAndALUAtomicV1();
238
239 // z/Architecture supports unaligned memory accesses.
240 // Performance penalty is negligible. An additional tick or so
241 // is lost if the accessed data spans a cache line boundary.
242 // Unaligned accesses are not atomic, of course.
243 if (FLAG_IS_DEFAULT(UseUnalignedAccesses)) {
244 FLAG_SET_DEFAULT(UseUnalignedAccesses, true);
245 }
246 }
247
248
249 void VM_Version::set_features_string() {
250
251 unsigned int ambiguity = 0;
252 _model_string = z_name[0];
253 if (is_z13()) {
254 _features_string = "System z G7-z13 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update, TxM, VectorInstr)";
255 _model_string = z_name[7];
256 ambiguity++;
257 }
258 if (is_ec12()) {
259 _features_string = "System z G6-EC12 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update, TxM)";
260 _model_string = z_name[6];
261 ambiguity++;
262 }
263 if (is_z196()) {
264 _features_string = "System z G5-z196 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB, Cond Load/Store, Interlocked Update)";
265 _model_string = z_name[5];
266 ambiguity++;
267 }
268 if (is_z10()) {
269 _features_string = "System z G4-z10 (LDISP_fast, ExtImm, PCrel Load/Store, CmpB)";
270 _model_string = z_name[4];
271 ambiguity++;
272 }
273 if (is_z9()) {
274 _features_string = "System z G3-z9 (LDISP_fast, ExtImm), out-of-support as of 2016-04-01";
275 _model_string = z_name[3];
276 ambiguity++;
277 }
278 if (is_z990()) {
279 _features_string = "System z G2-z990 (LDISP_fast), out-of-support as of 2014-07-01";
280 _model_string = z_name[2];
281 ambiguity++;
282 }
283 if (is_z900()) {
284 _features_string = "System z G1-z900 (LDISP), out-of-support as of 2014-07-01";
285 _model_string = z_name[1];
286 ambiguity++;
287 }
288
289 if (ambiguity == 0) {
290 _features_string = "z/Architecture (unknown generation)";
291 } else if (ambiguity > 1) {
292 tty->print_cr("*** WARNING *** Ambiguous z/Architecture detection, ambiguity = %d", ambiguity);
293 tty->print_cr(" oldest detected generation is %s", _features_string);
294 _features_string = "z/Architecture (ambiguous detection)";
295 }
296
297 if (has_Crypto_AES()) {
298 char buf[256];
299 assert(strlen(_features_string) + 4 + 3*4 + 1 < sizeof(buf), "increase buffer size");
300 jio_snprintf(buf, sizeof(buf), "%s aes%s%s%s", // String 'aes' must be surrounded by spaces so that jtreg tests recognize it.
301 _features_string,
302 has_Crypto_AES128() ? " 128" : "",
303 has_Crypto_AES192() ? " 192" : "",
304 has_Crypto_AES256() ? " 256" : "");
305 _features_string = os::strdup(buf);
306 }
307
308 if (has_Crypto_SHA()) {
309 char buf[256];
310 assert(strlen(_features_string) + 4 + 2 + 2*4 + 6 + 1 < sizeof(buf), "increase buffer size");
311 // String 'sha1' etc must be surrounded by spaces so that jtreg tests recognize it.
312 jio_snprintf(buf, sizeof(buf), "%s %s%s%s%s",
313 _features_string,
314 has_Crypto_SHA1() ? " sha1" : "",
315 has_Crypto_SHA256() ? " sha256" : "",
316 has_Crypto_SHA512() ? " sha512" : "",
317 has_Crypto_GHASH() ? " ghash" : "");
318 if (has_Crypto_AES()) { os::free((void *)_features_string); }
319 _features_string = os::strdup(buf);
320 }
321 }
322
323 // featureBuffer - bit array indicating availability of various features
324 // featureNum - bit index of feature to be tested
325 // Featurenum < 0 requests test for any nonzero bit in featureBuffer.
326 // bufLen - length of featureBuffer in bits
327 bool VM_Version::test_feature_bit(unsigned long* featureBuffer, int featureNum, unsigned int bufLen) {
328 assert(bufLen > 0, "buffer len must be positive");
329 assert((bufLen & 0x0007) == 0, "unaligned buffer len");
330 assert(((intptr_t)featureBuffer&0x0007) == 0, "unaligned feature buffer");
331 if (featureNum < 0) {
332 // Any bit set at all?
333 bool anyBit = false;
334 for (size_t i = 0; i < bufLen/(8*sizeof(long)); i++) {
335 anyBit = anyBit || (featureBuffer[i] != 0);
336 }
337 return anyBit;
338 } else {
339 assert((unsigned int)featureNum < bufLen, "feature index out of range");
340 unsigned char* byteBuffer = (unsigned char*)featureBuffer;
341 int byteIndex = featureNum/(8*sizeof(char));
342 int bitIndex = featureNum%(8*sizeof(char));
343 // Indexed bit set?
344 return (byteBuffer[byteIndex] & (1U<<(7-bitIndex))) != 0;
345 }
346 }
347
348 void VM_Version::print_features_internal(const char* text, bool print_anyway) {
349 tty->print_cr("%s %s", text, features_string());
350 tty->print("%s", text);
351 for (unsigned int i = 0; i < _nfeatures; i++) {
352 tty->print(" 0x%16.16lx", _features[i]);
353 }
354 tty->cr();
355
356 if (Verbose || print_anyway) {
357 // z900
358 if (has_long_displacement() ) tty->print_cr("available: %s", "LongDispFacility");
359 // z990
360 if (has_long_displacement_fast() ) tty->print_cr("available: %s", "LongDispFacilityHighPerf");
361 if (has_ETF2() && has_ETF3() ) tty->print_cr("available: %s", "ETF2 and ETF3");
362 if (has_Crypto() ) tty->print_cr("available: %s", "CryptoFacility");
363 // z9
364 if (has_extended_immediate() ) tty->print_cr("available: %s", "ExtImmedFacility");
365 if (has_StoreFacilityListExtended()) tty->print_cr("available: %s", "StoreFacilityListExtended");
366 if (has_StoreClockFast() ) tty->print_cr("available: %s", "StoreClockFast");
367 if (has_ETF2Enhancements() ) tty->print_cr("available: %s", "ETF2 Enhancements");
368 if (has_ETF3Enhancements() ) tty->print_cr("available: %s", "ETF3 Enhancements");
369 if (has_HFPUnnormalized() ) tty->print_cr("available: %s", "HFPUnnormalizedFacility");
370 if (has_HFPMultiplyAndAdd() ) tty->print_cr("available: %s", "HFPMultiplyAndAddFacility");
371 // z10
372 if (has_ParsingEnhancements() ) tty->print_cr("available: %s", "Parsing Enhancements");
373 if (has_ExtractCPUtime() ) tty->print_cr("available: %s", "ExtractCPUTime");
374 if (has_CompareSwapStore() ) tty->print_cr("available: %s", "CompareSwapStore");
375 if (has_GnrlInstrExtensions() ) tty->print_cr("available: %s", "General Instruction Extensions");
376 if (has_CompareBranch() ) tty->print_cr(" available: %s", "Compare and Branch");
377 if (has_CompareTrap() ) tty->print_cr(" available: %s", "Compare and Trap");
378 if (has_RelativeLoadStore() ) tty->print_cr(" available: %s", "Relative Load/Store");
379 if (has_MultiplySingleImm32() ) tty->print_cr(" available: %s", "MultiplySingleImm32");
380 if (has_Prefetch() ) tty->print_cr(" available: %s", "Prefetch");
381 if (has_MoveImmToMem() ) tty->print_cr(" available: %s", "Direct Moves Immediate to Memory");
382 if (has_MemWithImmALUOps() ) tty->print_cr(" available: %s", "Direct ALU Ops Memory .op. Immediate");
383 if (has_ExtractCPUAttributes() ) tty->print_cr(" available: %s", "Extract CPU Atributes");
384 if (has_ExecuteExtensions() ) tty->print_cr("available: %s", "ExecuteExtensions");
385 if (has_FPSupportEnhancements() ) tty->print_cr("available: %s", "FPSupportEnhancements");
386 if (has_DecimalFloatingPoint() ) tty->print_cr("available: %s", "DecimalFloatingPoint");
387 // z196
388 if (has_DistinctOpnds() ) tty->print_cr("available: %s", "Distinct Operands");
389 if (has_InterlockedAccessV1() ) tty->print_cr(" available: %s", "InterlockedAccess V1 (fast)");
390 if (has_PopCount() ) tty->print_cr(" available: %s", "PopCount");
391 if (has_LoadStoreConditional() ) tty->print_cr(" available: %s", "LoadStoreConditional");
392 if (has_HighWordInstr() ) tty->print_cr(" available: %s", "HighWord Instructions");
393 if (has_FastSync() ) tty->print_cr(" available: %s", "FastSync (bcr 14,0)");
394 if (has_AtomicMemWithImmALUOps() ) tty->print_cr("available: %s", "Atomic Direct ALU Ops Memory .op. Immediate");
395 if (has_FPExtensions() ) tty->print_cr("available: %s", "Floatingpoint Extensions");
396 if (has_CryptoExt3() ) tty->print_cr("available: %s", "Crypto Extensions 3");
397 if (has_CryptoExt4() ) tty->print_cr("available: %s", "Crypto Extensions 4");
398 // EC12
399 if (has_MiscInstrExt() ) tty->print_cr("available: %s", "Miscelaneous Instruction Extensions");
400 if (has_ExecutionHint() ) tty->print_cr(" available: %s", "Execution Hints (branch prediction)");
401 if (has_ProcessorAssist() ) tty->print_cr(" available: %s", "Processor Assists");
402 if (has_LoadAndTrap() ) tty->print_cr(" available: %s", "Load and Trap");
403 if (has_TxMem() ) tty->print_cr("available: %s", "Transactional Memory");
404 if (has_InterlockedAccessV2() ) tty->print_cr(" available: %s", "InterlockedAccess V2 (fast)");
405 if (has_DFPZonedConversion() ) tty->print_cr(" available: %s", "DFP Zoned Conversions");
406 // z13
407 if (has_LoadStoreConditional2() ) tty->print_cr("available: %s", "Load/Store Conditional 2");
408 if (has_CryptoExt5() ) tty->print_cr("available: %s", "Crypto Extensions 5");
409 if (has_DFPPackedConversion() ) tty->print_cr("available: %s", "DFP Packed Conversions");
410 if (has_VectorFacility() ) tty->print_cr("available: %s", "Vector Facility");
411 // test switches
412 if (has_TestFeature1Impl() ) tty->print_cr("available: %s", "TestFeature1Impl");
413 if (has_TestFeature2Impl() ) tty->print_cr("available: %s", "TestFeature2Impl");
414 if (has_TestFeature4Impl() ) tty->print_cr("available: %s", "TestFeature4Impl");
415 if (has_TestFeature8Impl() ) tty->print_cr("available: %s", "TestFeature8Impl");
416
417 if (has_Crypto()) {
418 tty->cr();
419 tty->print_cr("detailed availability of %s capabilities:", "CryptoFacility");
420 if (test_feature_bit(&_cipher_features[0], -1, 2*Cipher::_featureBits)) {
421 tty->cr();
422 tty->print_cr(" available: %s", "Message Cipher Functions");
423 }
424 if (test_feature_bit(&_cipher_features[0], -1, (int)Cipher::_featureBits)) {
425 tty->print_cr(" available Crypto Features of KM (Cipher Message):");
426 for (unsigned int i = 0; i < Cipher::_featureBits; i++) {
427 if (test_feature_bit(&_cipher_features[0], i, (int)Cipher::_featureBits)) {
428 switch (i) {
429 case Cipher::_Query: tty->print_cr(" available: KM Query"); break;
430 case Cipher::_DEA: tty->print_cr(" available: KM DEA"); break;
431 case Cipher::_TDEA128: tty->print_cr(" available: KM TDEA-128"); break;
432 case Cipher::_TDEA192: tty->print_cr(" available: KM TDEA-192"); break;
433 case Cipher::_EncryptedDEA: tty->print_cr(" available: KM Encrypted DEA"); break;
434 case Cipher::_EncryptedDEA128: tty->print_cr(" available: KM Encrypted DEA-128"); break;
435 case Cipher::_EncryptedDEA192: tty->print_cr(" available: KM Encrypted DEA-192"); break;
436 case Cipher::_AES128: tty->print_cr(" available: KM AES-128"); break;
437 case Cipher::_AES192: tty->print_cr(" available: KM AES-192"); break;
438 case Cipher::_AES256: tty->print_cr(" available: KM AES-256"); break;
439 case Cipher::_EnccryptedAES128: tty->print_cr(" available: KM Encrypted-AES-128"); break;
440 case Cipher::_EnccryptedAES192: tty->print_cr(" available: KM Encrypted-AES-192"); break;
441 case Cipher::_EnccryptedAES256: tty->print_cr(" available: KM Encrypted-AES-256"); break;
442 case Cipher::_XTSAES128: tty->print_cr(" available: KM XTS-AES-128"); break;
443 case Cipher::_XTSAES256: tty->print_cr(" available: KM XTS-AES-256"); break;
444 case Cipher::_EncryptedXTSAES128: tty->print_cr(" available: KM XTS-Encrypted-AES-128"); break;
445 case Cipher::_EncryptedXTSAES256: tty->print_cr(" available: KM XTS-Encrypted-AES-256"); break;
446 default: tty->print_cr(" available: unknown KM code %d", i); break;
447 }
448 }
449 }
450 }
451 if (test_feature_bit(&_cipher_features[2], -1, (int)Cipher::_featureBits)) {
452 tty->print_cr(" available Crypto Features of KMC (Cipher Message with Chaining):");
453 for (unsigned int i = 0; i < Cipher::_featureBits; i++) {
454 if (test_feature_bit(&_cipher_features[2], i, (int)Cipher::_featureBits)) {
455 switch (i) {
456 case Cipher::_Query: tty->print_cr(" available: KMC Query"); break;
457 case Cipher::_DEA: tty->print_cr(" available: KMC DEA"); break;
458 case Cipher::_TDEA128: tty->print_cr(" available: KMC TDEA-128"); break;
459 case Cipher::_TDEA192: tty->print_cr(" available: KMC TDEA-192"); break;
460 case Cipher::_EncryptedDEA: tty->print_cr(" available: KMC Encrypted DEA"); break;
461 case Cipher::_EncryptedDEA128: tty->print_cr(" available: KMC Encrypted DEA-128"); break;
462 case Cipher::_EncryptedDEA192: tty->print_cr(" available: KMC Encrypted DEA-192"); break;
463 case Cipher::_AES128: tty->print_cr(" available: KMC AES-128"); break;
464 case Cipher::_AES192: tty->print_cr(" available: KMC AES-192"); break;
465 case Cipher::_AES256: tty->print_cr(" available: KMC AES-256"); break;
466 case Cipher::_EnccryptedAES128: tty->print_cr(" available: KMC Encrypted-AES-128"); break;
467 case Cipher::_EnccryptedAES192: tty->print_cr(" available: KMC Encrypted-AES-192"); break;
468 case Cipher::_EnccryptedAES256: tty->print_cr(" available: KMC Encrypted-AES-256"); break;
469 case Cipher::_PRNG: tty->print_cr(" available: KMC PRNG"); break;
470 default: tty->print_cr(" available: unknown KMC code %d", i); break;
471 }
472 }
473 }
474 }
475
476 if (test_feature_bit(&_msgdigest_features[0], -1, 2*MsgDigest::_featureBits)) {
477 tty->cr();
478 tty->print_cr(" available: %s", "Message Digest Functions for SHA");
479 }
480 if (test_feature_bit(&_msgdigest_features[0], -1, (int)MsgDigest::_featureBits)) {
481 tty->print_cr(" available Features of KIMD (Msg Digest):");
482 for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) {
483 if (test_feature_bit(&_msgdigest_features[0], i, (int)MsgDigest::_featureBits)) {
484 switch (i) {
485 case MsgDigest::_Query: tty->print_cr(" available: KIMD Query"); break;
486 case MsgDigest::_SHA1: tty->print_cr(" available: KIMD SHA-1"); break;
487 case MsgDigest::_SHA256: tty->print_cr(" available: KIMD SHA-256"); break;
488 case MsgDigest::_SHA512: tty->print_cr(" available: KIMD SHA-512"); break;
489 case MsgDigest::_GHASH: tty->print_cr(" available: KIMD GHASH"); break;
490 default: tty->print_cr(" available: unknown code %d", i); break;
491 }
492 }
493 }
494 }
495 if (test_feature_bit(&_msgdigest_features[2], -1, (int)MsgDigest::_featureBits)) {
496 tty->print_cr(" available Features of KLMD (Msg Digest):");
497 for (unsigned int i = 0; i < MsgDigest::_featureBits; i++) {
498 if (test_feature_bit(&_msgdigest_features[2], i, (int)MsgDigest::_featureBits)) {
499 switch (i) {
500 case MsgDigest::_Query: tty->print_cr(" available: KLMD Query"); break;
501 case MsgDigest::_SHA1: tty->print_cr(" available: KLMD SHA-1"); break;
502 case MsgDigest::_SHA256: tty->print_cr(" available: KLMD SHA-256"); break;
503 case MsgDigest::_SHA512: tty->print_cr(" available: KLMD SHA-512"); break;
504 default: tty->print_cr(" available: unknown code %d", i); break;
505 }
506 }
507 }
508 }
509 }
510 if (ContendedPaddingWidth > 0) {
511 tty->cr();
512 tty->print_cr("ContendedPaddingWidth " INTX_FORMAT, ContendedPaddingWidth);
513 }
514 }
515 }
516
517 void VM_Version::print_features() {
518 print_features_internal("Version:");
519 }
520
521 void VM_Version::reset_features(bool reset) {
522 if (reset) {
523 for (unsigned int i = 0; i < _features_buffer_len; i++) {
524 VM_Version::_features[i] = 0;
525 }
526 }
527 }
528
529 void VM_Version::set_features_z900(bool reset) {
530 reset_features(reset);
531
532 set_has_long_displacement();
533 set_has_ETF2();
534 }
535
536 void VM_Version::set_features_z990(bool reset) {
537 reset_features(reset);
538
539 set_features_z900(false);
540 set_has_ETF3();
541 set_has_long_displacement_fast();
542 set_has_HFPMultiplyAndAdd();
543 }
544
545 void VM_Version::set_features_z9(bool reset) {
546 reset_features(reset);
547
548 set_features_z990(false);
549 set_has_StoreFacilityListExtended();
550 // set_has_Crypto(); // Do not set, crypto features must be retrieved separately.
551 set_has_ETF2Enhancements();
552 set_has_ETF3Enhancements();
553 set_has_extended_immediate();
554 set_has_StoreClockFast();
555 set_has_HFPUnnormalized();
556 }
557
558 void VM_Version::set_features_z10(bool reset) {
559 reset_features(reset);
560
561 set_features_z9(false);
562 set_has_CompareSwapStore();
563 set_has_RelativeLoadStore();
564 set_has_CompareBranch();
565 set_has_CompareTrap();
566 set_has_MultiplySingleImm32();
567 set_has_Prefetch();
568 set_has_MoveImmToMem();
569 set_has_MemWithImmALUOps();
570 set_has_ExecuteExtensions();
571 set_has_FPSupportEnhancements();
572 set_has_DecimalFloatingPoint();
573 set_has_ExtractCPUtime();
574 set_has_CryptoExt3();
575 }
576
577 void VM_Version::set_features_z196(bool reset) {
578 reset_features(reset);
579
580 set_features_z10(false);
581 set_has_InterlockedAccessV1();
582 set_has_PopCount();
583 set_has_LoadStoreConditional();
584 set_has_HighWordInstr();
585 set_has_FastSync();
586 set_has_FPExtensions();
587 set_has_DistinctOpnds();
588 set_has_CryptoExt4();
589 }
590
591 void VM_Version::set_features_ec12(bool reset) {
592 reset_features(reset);
593
594 set_features_z196(false);
595 set_has_MiscInstrExt();
596 set_has_InterlockedAccessV2();
597 set_has_LoadAndALUAtomicV2();
598 set_has_TxMem();
599 }
600
601 void VM_Version::set_features_z13(bool reset) {
602 reset_features(reset);
603
604 set_features_ec12(false);
605 set_has_LoadStoreConditional2();
606 set_has_CryptoExt5();
607 set_has_VectorFacility();
608 }
609
610 void VM_Version::set_features_from(const char* march) {
611 bool err = false;
612 bool prt = false;
613
614 if ((march != NULL) && (march[0] != '\0')) {
615 const int buf_len = 16;
616 const int hdr_len = 5;
617 char buf[buf_len];
618 if (strlen(march) >= hdr_len) {
619 memcpy(buf, march, hdr_len);
620 buf[hdr_len] = '\00';
621 } else {
622 buf[0] = '\00';
623 }
624
625 if (!strcmp(march, "z900")) {
626 set_features_z900();
627 } else if (!strcmp(march, "z990")) {
628 set_features_z990();
629 } else if (!strcmp(march, "z9")) {
630 set_features_z9();
631 } else if (!strcmp(march, "z10")) {
632 set_features_z10();
633 } else if (!strcmp(march, "z196")) {
634 set_features_z196();
635 } else if (!strcmp(march, "ec12")) {
636 set_features_ec12();
637 } else if (!strcmp(march, "z13")) {
638 set_features_z13();
639 } else if (!strcmp(buf, "ztest")) {
640 assert(!has_TestFeaturesImpl(), "possible facility list flag conflict");
641 if (strlen(march) > hdr_len) {
642 int itest = 0;
643 if ((strlen(march)-hdr_len) >= buf_len) err = true;
644 if (!err) {
645 memcpy(buf, &march[hdr_len], strlen(march)-hdr_len);
646 buf[strlen(march)-hdr_len] = '\00';
647 for (size_t i = 0; !err && (i < strlen(buf)); i++) {
648 itest = itest*10 + buf[i]-'0';
649 err = err || ((buf[i]-'0') < 0) || ((buf[i]-'0') > 9) || (itest > 15);
650 }
651 }
652 if (!err) {
653 prt = true;
654 if (itest & 0x01) { set_has_TestFeature1Impl(); }
655 if (itest & 0x02) { set_has_TestFeature2Impl(); }
656 if (itest & 0x04) { set_has_TestFeature4Impl(); }
657 if (itest & 0x08) { set_has_TestFeature8Impl(); }
658 }
659 } else {
660 prt = true;
661 set_has_TestFeature1Impl();
662 set_has_TestFeature2Impl();
663 set_has_TestFeature4Impl();
664 set_has_TestFeature8Impl();
665 }
666 } else {
667 err = true;
668 }
669 if (!err) {
670 set_features_string();
671 if (prt || PrintAssembly) {
672 print_features_internal("CPU Version as set by cmdline option:", prt);
673 }
674 } else {
675 tty->print_cr("***Warning: Unsupported ProcessorArchitecture: %s, internal settings left undisturbed.", march);
676 }
677 }
678
679 }
680
681 static long (*getFeatures)(unsigned long*, int, int) = NULL;
682
683 void VM_Version::set_getFeatures(address entryPoint) {
684 if (getFeatures == NULL) {
685 getFeatures = (long(*)(unsigned long*, int, int))entryPoint;
686 }
687 }
688
689 long VM_Version::call_getFeatures(unsigned long* buffer, int buflen, int functionCode) {
690 VM_Version::_is_determine_features_test_running = true;
691 long functionResult = (*getFeatures)(buffer, buflen, functionCode);
692 VM_Version::_is_determine_features_test_running = false;
693 return functionResult;
694 }
695
696 // Helper function for "extract cache attribute" instruction.
697 int VM_Version::calculate_ECAG_functionCode(unsigned int attributeIndication,
698 unsigned int levelIndication,
699 unsigned int typeIndication) {
700 return (attributeIndication<<4) | (levelIndication<<1) | typeIndication;
701 }
702
703 void VM_Version::determine_features() {
704
705 const int cbuf_size = _code_buffer_len;
706 const int buf_len = _features_buffer_len;
707
708 // Allocate code buffer space for the detection code.
709 ResourceMark rm;
710 CodeBuffer cbuf("determine CPU features", cbuf_size, 0);
711 MacroAssembler* a = new MacroAssembler(&cbuf);
712
713 // Emit code.
714 set_getFeatures(a->pc());
715 address code = a->pc();
716
717 // Try STFLE. Possible INVOP will cause defaults to be used.
718 Label getFEATURES;
719 Label getCPUFEATURES; // fcode = -1 (cache)
720 Label getCIPHERFEATURES; // fcode = -2 (cipher)
721 Label getMSGDIGESTFEATURES; // fcode = -3 (SHA)
722 Label getVECTORFEATURES; // fcode = -4 (OS support for vector instructions)
723 Label errRTN;
724 a->z_ltgfr(Z_R0, Z_ARG2); // Buf len to r0 and test.
725 a->z_brl(getFEATURES); // negative -> Get machine features not covered by facility list.
726 a->z_lghi(Z_R1,0);
727 a->z_brz(errRTN); // zero -> Function code currently not used, indicate "aborted".
728
729 a->z_aghi(Z_R0, -1);
730 a->z_stfle(0, Z_ARG1);
731 a->z_lg(Z_R1, 0, Z_ARG1); // Get first DW of facility list.
732 a->z_lgr(Z_RET, Z_R0); // Calculate rtn value for success.
733 a->z_la(Z_RET, 1, Z_RET);
734 a->z_brnz(errRTN); // Instr failed if non-zero CC.
735 a->z_ltgr(Z_R1, Z_R1); // Instr failed if first DW == 0.
736 a->z_bcr(Assembler::bcondNotZero, Z_R14); // Successful return.
737
738 a->bind(errRTN);
739 a->z_lngr(Z_RET, Z_RET);
740 a->z_ltgr(Z_R1, Z_R1);
741 a->z_bcr(Assembler::bcondNotZero, Z_R14); // Return "buffer too small".
742 a->z_xgr(Z_RET, Z_RET);
743 a->z_br(Z_R14); // Return "operation aborted".
744
745 a->bind(getFEATURES);
746 a->z_cghi(Z_R0, -1); // -1: Extract CPU attributes, currently: cache layout only.
747 a->z_bre(getCPUFEATURES);
748 a->z_cghi(Z_R0, -2); // -2: Extract detailed crypto capabilities (cipher instructions).
749 a->z_bre(getCIPHERFEATURES);
750 a->z_cghi(Z_R0, -3); // -3: Extract detailed crypto capabilities (msg digest instructions).
751 a->z_bre(getMSGDIGESTFEATURES);
752 a->z_cghi(Z_R0, -4); // -4: Verify vector instruction availability (OS support).
753 a->z_bre(getVECTORFEATURES);
754
755 a->z_xgr(Z_RET, Z_RET); // Not a valid function code.
756 a->z_br(Z_R14); // Return "operation aborted".
757
758 // Try KIMD/KLMD query function to get details about msg digest (secure hash, SHA) instructions.
759 a->bind(getMSGDIGESTFEATURES);
760 a->z_lghi(Z_R0,(int)MsgDigest::_Query); // query function code
761 a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size
762 a->z_kimd(Z_R2,Z_R2); // Get available KIMD functions (bit pattern in param blk).
763 a->z_la(Z_R1,16,Z_R1); // next param block addr
764 a->z_klmd(Z_R2,Z_R2); // Get available KLMD functions (bit pattern in param blk).
765 a->z_lghi(Z_RET,4);
766 a->z_br(Z_R14);
767
768 // Try KM/KMC query function to get details about crypto instructions.
769 a->bind(getCIPHERFEATURES);
770 a->z_lghi(Z_R0,(int)Cipher::_Query); // query function code
771 a->z_lgr(Z_R1,Z_R2); // param block addr, 2*16 bytes min size (KIMD/KLMD output)
772 a->z_km(Z_R2,Z_R2); // get available KM functions
773 a->z_la(Z_R1,16,Z_R1); // next param block addr
774 a->z_kmc(Z_R2,Z_R2); // get available KMC functions
775 a->z_lghi(Z_RET,4);
776 a->z_br(Z_R14);
777
778 // Use EXTRACT CPU ATTRIBUTE instruction to get information about cache layout.
779 a->bind(getCPUFEATURES);
780 a->z_xgr(Z_R0,Z_R0); // as recommended in instruction documentation
781 a->z_ecag(Z_RET,Z_R0,0,Z_ARG3); // Extract information as requested by Z_ARG1 contents.
782 a->z_br(Z_R14);
783
784 // Use a vector instruction to verify OS support. Will fail with SIGFPE if OS support is missing.
785 a->bind(getVECTORFEATURES);
786 a->z_vtm(Z_V0,Z_V0); // non-destructive vector instruction. Will cause SIGFPE if not supported.
787 a->z_br(Z_R14);
788
789 address code_end = a->pc();
790 a->flush();
791
792 // Print the detection code.
793 bool printVerbose = Verbose || PrintAssembly || PrintStubCode;
794 if (printVerbose) {
795 ttyLocker ttyl;
796 tty->print_cr("Decoding CPU feature detection stub at " INTPTR_FORMAT " before execution:", p2i(code));
797 tty->print_cr("Stub length is %ld bytes, codebuffer reserves %d bytes, %ld bytes spare.",
798 code_end-code, cbuf_size, cbuf_size-(code_end-code));
799
800 // Use existing decode function. This enables the [Code] format which is needed to DecodeErrorFile.
801 Disassembler::decode((u_char*)code, (u_char*)code_end, tty);
802 }
803
804 // Prepare for detection code execution and clear work buffer.
805 _nfeatures = 0;
806 _ncipher_features = 0;
807 unsigned long buffer[buf_len];
808
809 for (int i = 0; i < buf_len; i++) {
810 buffer[i] = 0L;
811 }
812
813 // execute code
814 // Illegal instructions will be replaced by 0 in signal handler.
815 // In case of problems, call_getFeatures will return a not-positive result.
816 long used_len = call_getFeatures(buffer, buf_len, 0);
817
818 bool ok;
819 if (used_len == 1) {
820 ok = true;
821 } else if (used_len > 1) {
822 unsigned int used_lenU = (unsigned int)used_len;
823 ok = true;
824 for (unsigned int i = 1; i < used_lenU; i++) {
825 ok = ok && (buffer[i] == 0L);
826 }
827 if (printVerbose && !ok) {
828 bool compact = false;
829 tty->print_cr("Note: feature list has %d (i.e. more than one) array elements.", used_lenU);
830 if (compact) {
831 tty->print("non-zero feature list elements:");
832 for (unsigned int i = 0; i < used_lenU; i++) {
833 tty->print(" [%d]: 0x%16.16lx", i, buffer[i]);
834 }
835 tty->cr();
836 } else {
837 for (unsigned int i = 0; i < used_lenU; i++) {
838 tty->print_cr("non-zero feature list[%d]: 0x%16.16lx", i, buffer[i]);
839 }
840 }
841
842 if (compact) {
843 tty->print_cr("Active features (compact view):");
844 for (unsigned int k = 0; k < used_lenU; k++) {
845 tty->print_cr(" buffer[%d]:", k);
846 for (unsigned int j = k*sizeof(long); j < (k+1)*sizeof(long); j++) {
847 bool line = false;
848 for (unsigned int i = j*8; i < (j+1)*8; i++) {
849 bool bit = test_feature_bit(buffer, i, used_lenU*sizeof(long)*8);
850 if (bit) {
851 if (!line) {
852 tty->print(" byte[%d]:", j);
853 line = true;
854 }
855 tty->print(" [%3.3d]", i);
856 }
857 }
858 if (line) {
859 tty->cr();
860 }
861 }
862 }
863 } else {
864 tty->print_cr("Active features (full 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 tty->print(" byte[%d]:", j);
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 tty->print(" [%3.3d]", i);
873 } else {
874 tty->print(" ");
875 }
876 }
877 tty->cr();
878 }
879 }
880 }
881 }
882 ok = true;
883 } else { // No features retrieved if we reach here. Buffer too short or instr not available.
884 if (used_len < 0) {
885 ok = false;
886 if (printVerbose) {
887 tty->print_cr("feature list buffer[%d] too short, required: buffer[%ld]", buf_len, -used_len);
888 }
889 } else {
890 if (printVerbose) {
891 tty->print_cr("feature list could not be retrieved. Running on z900 or z990? Trying to find out...");
892 }
893 used_len = call_getFeatures(buffer, 0, 0); // Must provide at least two DW buffer elements!!!!
894
895 ok = used_len > 0;
896 if (ok) {
897 if (buffer[1]*10 < buffer[0]) {
898 set_features_z900();
899 } else {
900 set_features_z990();
901 }
902
903 if (printVerbose) {
904 tty->print_cr("Note: high-speed long displacement test used %ld iterations.", used_len);
905 tty->print_cr(" Positive displacement loads took %8.8lu microseconds.", buffer[1]);
906 tty->print_cr(" Negative displacement loads took %8.8lu microseconds.", buffer[0]);
907 if (has_long_displacement_fast()) {
908 tty->print_cr(" assuming high-speed long displacement IS available.");
909 } else {
910 tty->print_cr(" assuming high-speed long displacement is NOT available.");
911 }
912 }
913 } else {
914 if (printVerbose) {
915 tty->print_cr("Note: high-speed long displacement test was not successful.");
916 tty->print_cr(" assuming long displacement is NOT available.");
917 }
918 }
919 return; // Do not copy buffer to _features, no test for cipher features.
920 }
921 }
922
923 if (ok) {
924 // Fill features buffer.
925 // Clear work buffer.
926 for (int i = 0; i < buf_len; i++) {
927 _features[i] = buffer[i];
928 _cipher_features[i] = 0;
929 _msgdigest_features[i] = 0;
930 buffer[i] = 0L;
931 }
932 _nfeatures = used_len;
933 } else {
934 for (int i = 0; i < buf_len; i++) {
935 _features[i] = 0;
936 _cipher_features[i] = 0;
937 _msgdigest_features[i] = 0;
938 buffer[i] = 0L;
939 }
940 _nfeatures = 0;
941 }
942
943 if (has_VectorFacility()) {
944 // Verify that feature can actually be used. OS support required.
945 call_getFeatures(buffer, -4, 0);
946 if (printVerbose) {
947 ttyLocker ttyl;
948 if (has_VectorFacility()) {
949 tty->print_cr(" Vector Facility has been verified to be supported by OS");
950 } else {
951 tty->print_cr(" Vector Facility has been disabled - not supported by OS");
952 }
953 }
954 }
955
956 // Extract Crypto Facility details.
957 if (has_Crypto()) {
958 // Get cipher features.
959 used_len = call_getFeatures(buffer, -2, 0);
960 for (int i = 0; i < buf_len; i++) {
961 _cipher_features[i] = buffer[i];
962 }
963 _ncipher_features = used_len;
964
965 // Get msg digest features.
966 used_len = call_getFeatures(buffer, -3, 0);
967 for (int i = 0; i < buf_len; i++) {
968 _msgdigest_features[i] = buffer[i];
969 }
970 _nmsgdigest_features = used_len;
971 }
972
973 static int levelProperties[_max_cache_levels]; // All property indications per level.
974 static int levelScope[_max_cache_levels]; // private/shared
975 static const char* levelScopeText[4] = {"No cache ",
976 "CPU private",
977 "shared ",
978 "reserved "};
979
980 static int levelType[_max_cache_levels]; // D/I/mixed
981 static const char* levelTypeText[4] = {"separate D and I caches",
982 "I cache only ",
983 "D-cache only ",
984 "combined D/I cache "};
985
986 static unsigned int levelReserved[_max_cache_levels]; // reserved property bits
987 static unsigned int levelLineSize[_max_cache_levels];
988 static unsigned int levelTotalSize[_max_cache_levels];
989 static unsigned int levelAssociativity[_max_cache_levels];
990
991
992 // Extract Cache Layout details.
993 if (has_ExtractCPUAttributes() && printVerbose) { // For information only, as of now.
994 bool lineSize_mismatch;
995 bool print_something;
996 long functionResult;
997 unsigned int attributeIndication = 0; // 0..15
998 unsigned int levelIndication = 0; // 0..8
999 unsigned int typeIndication = 0; // 0..1 (D-Cache, I-Cache)
1000 int functionCode = calculate_ECAG_functionCode(attributeIndication, levelIndication, typeIndication);
1001
1002 // Get cache topology.
1003 functionResult = call_getFeatures(buffer, -1, functionCode);
1004
1005 for (unsigned int i = 0; i < _max_cache_levels; i++) {
1006 if (functionResult > 0) {
1007 int shiftVal = 8*(_max_cache_levels-(i+1));
1008 levelProperties[i] = (functionResult & (0xffUL<<shiftVal)) >> shiftVal;
1009 levelReserved[i] = (levelProperties[i] & 0xf0) >> 4;
1010 levelScope[i] = (levelProperties[i] & 0x0c) >> 2;
1011 levelType[i] = (levelProperties[i] & 0x03);
1012 } else {
1013 levelProperties[i] = 0;
1014 levelReserved[i] = 0;
1015 levelScope[i] = 0;
1016 levelType[i] = 0;
1017 }
1018 levelLineSize[i] = 0;
1019 levelTotalSize[i] = 0;
1020 levelAssociativity[i] = 0;
1021 }
1022
1023 tty->cr();
1024 tty->print_cr("------------------------------------");
1025 tty->print_cr("--- Cache Topology Information ---");
1026 tty->print_cr("------------------------------------");
1027 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1028 tty->print_cr(" Cache Level %d: <scope> %s | <type> %s",
1029 i+1, levelScopeText[levelScope[i]], levelTypeText[levelType[i]]);
1030 }
1031
1032 // Get D-cache details per level.
1033 _Dcache_lineSize = 0;
1034 lineSize_mismatch = false;
1035 print_something = false;
1036 typeIndication = 0; // 0..1 (D-Cache, I-Cache)
1037 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1038 if ((levelType[i] == 0) || (levelType[i] == 2)) {
1039 print_something = true;
1040
1041 // Get cache line size of level i.
1042 attributeIndication = 1;
1043 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1044 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1045
1046 // Get cache total size of level i.
1047 attributeIndication = 2;
1048 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1049 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1050
1051 // Get cache associativity of level i.
1052 attributeIndication = 3;
1053 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1054 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1055
1056 _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize;
1057 lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i]);
1058 } else {
1059 levelLineSize[i] = 0;
1060 }
1061 }
1062
1063 if (print_something) {
1064 tty->cr();
1065 tty->print_cr("------------------------------------");
1066 tty->print_cr("--- D-Cache Detail Information ---");
1067 tty->print_cr("------------------------------------");
1068 if (lineSize_mismatch) {
1069 tty->print_cr("WARNING: D-Cache line size mismatch!");
1070 }
1071 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1072 if (levelLineSize[i] > 0) {
1073 tty->print_cr(" D-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d",
1074 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]);
1075 }
1076 }
1077 }
1078
1079 // Get I-cache details per level.
1080 _Icache_lineSize = 0;
1081 lineSize_mismatch = false;
1082 print_something = false;
1083 typeIndication = 1; // 0..1 (D-Cache, I-Cache)
1084 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1085 if ((levelType[i] == 0) || (levelType[i] == 1)) {
1086 print_something = true;
1087
1088 // Get cache line size of level i.
1089 attributeIndication = 1;
1090 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1091 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1092
1093 // Get cache total size of level i.
1094 attributeIndication = 2;
1095 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1096 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1097
1098 // Get cache associativity of level i.
1099 attributeIndication = 3;
1100 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1101 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1102
1103 _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize;
1104 lineSize_mismatch = lineSize_mismatch || (_Icache_lineSize != levelLineSize[i]);
1105 } else {
1106 levelLineSize[i] = 0;
1107 }
1108 }
1109
1110 if (print_something) {
1111 tty->cr();
1112 tty->print_cr("------------------------------------");
1113 tty->print_cr("--- I-Cache Detail Information ---");
1114 tty->print_cr("------------------------------------");
1115 if (lineSize_mismatch) {
1116 tty->print_cr("WARNING: I-Cache line size mismatch!");
1117 }
1118 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1119 if (levelLineSize[i] > 0) {
1120 tty->print_cr(" I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d",
1121 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]);
1122 }
1123 }
1124 }
1125
1126 // Get D/I-cache details per level.
1127 lineSize_mismatch = false;
1128 print_something = false;
1129 typeIndication = 0; // 0..1 (D-Cache, I-Cache)
1130 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1131 if (levelType[i] == 3) {
1132 print_something = true;
1133
1134 // Get cache line size of level i.
1135 attributeIndication = 1;
1136 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1137 levelLineSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1138
1139 // Get cache total size of level i.
1140 attributeIndication = 2;
1141 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1142 levelTotalSize[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1143
1144 // Get cache associativity of level i.
1145 attributeIndication = 3;
1146 functionCode = calculate_ECAG_functionCode(attributeIndication, i, typeIndication);
1147 levelAssociativity[i] = (unsigned int)call_getFeatures(buffer, -1, functionCode);
1148
1149 _Dcache_lineSize = _Dcache_lineSize == 0 ? levelLineSize[i] : _Dcache_lineSize;
1150 _Icache_lineSize = _Icache_lineSize == 0 ? levelLineSize[i] : _Icache_lineSize;
1151 lineSize_mismatch = lineSize_mismatch || (_Dcache_lineSize != levelLineSize[i])
1152 || (_Icache_lineSize != levelLineSize[i]);
1153 } else {
1154 levelLineSize[i] = 0;
1155 }
1156 }
1157
1158 if (print_something) {
1159 tty->cr();
1160 tty->print_cr("--------------------------------------");
1161 tty->print_cr("--- D/I-Cache Detail Information ---");
1162 tty->print_cr("--------------------------------------");
1163 if (lineSize_mismatch) {
1164 tty->print_cr("WARNING: D/I-Cache line size mismatch!");
1165 }
1166 for (unsigned int i = 0; (i < _max_cache_levels) && (levelProperties[i] != 0); i++) {
1167 if (levelLineSize[i] > 0) {
1168 tty->print_cr(" D/I-Cache Level %d: line size = %4d, total size = %6dKB, associativity = %2d",
1169 i+1, levelLineSize[i], levelTotalSize[i]/(int)K, levelAssociativity[i]);
1170 }
1171 }
1172 }
1173 tty->cr();
1174 }
1175 return;
1176 }
1177
1178 unsigned long VM_Version::z_SIGILL() {
1179 unsigned long ZeroBuffer = 0;
1180 unsigned long work;
1181 asm(
1182 " LA %[work],%[buffer] \n\t" // Load address of buffer.
1183 " LARL 14,+6 \n\t" // Load address of faulting instruction.
1184 " BCR 15,%[work] \n\t" // Branch into buffer, execute whatever is in there.
1185 : [buffer] "+Q" (ZeroBuffer) /* outputs */
1186 , [work] "=&a" (work) /* outputs */
1187 : /* inputs */
1188 : "cc" /* clobbered */
1189 );
1190 return ZeroBuffer;
1191 }
1192
1193 unsigned long VM_Version::z_SIGSEGV() {
1194 unsigned long ZeroBuffer = 0;
1195 unsigned long work;
1196 asm(
1197 " LG %[work],%[buffer] \n\t" // Load zero address.
1198 " STG %[work],0(,%[work])\n\t" // Store to address zero.
1199 : [buffer] "+Q" (ZeroBuffer) /* outputs */
1200 , [work] "=&a" (work) /* outputs */
1201 : /* inputs */
1202 : "cc" /* clobbered */
1203 );
1204 return ZeroBuffer;
1205 }
1206