1 /*
2 * Copyright (c) 2006, 2014, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25 #include "precompiled.hpp"
26 #include "memory/allocation.hpp"
27 #include "memory/allocation.inline.hpp"
28 #include "runtime/os.hpp"
29 #include "vm_version_sparc.hpp"
30
31 #include <sys/auxv.h>
32 #include <sys/auxv_SPARC.h>
33 #include <sys/systeminfo.h>
34 #include <kstat.h>
35 #include <picl.h>
36 #include <dlfcn.h>
37 #include <link.h>
38
39 extern "C" static int PICL_get_l1_data_cache_line_size_helper(picl_nodehdl_t nodeh, void *result);
40 extern "C" static int PICL_get_l2_cache_line_size_helper(picl_nodehdl_t nodeh, void *result);
41
42 // Functions from the library we need (signatures should match those in picl.h)
43 extern "C" {
44 typedef int (*picl_initialize_func_t)(void);
45 typedef int (*picl_shutdown_func_t)(void);
46 typedef int (*picl_get_root_func_t)(picl_nodehdl_t *nodehandle);
47 typedef int (*picl_walk_tree_by_class_func_t)(picl_nodehdl_t rooth,
48 const char *classname, void *c_args,
49 int (*callback_fn)(picl_nodehdl_t hdl, void *args));
50 typedef int (*picl_get_prop_by_name_func_t)(picl_nodehdl_t nodeh, const char *nm,
51 picl_prophdl_t *ph);
52 typedef int (*picl_get_propval_func_t)(picl_prophdl_t proph, void *valbuf, size_t sz);
53 typedef int (*picl_get_propinfo_func_t)(picl_prophdl_t proph, picl_propinfo_t *pi);
54 }
55
56 class PICL {
57 // Pointers to functions in the library
58 picl_initialize_func_t _picl_initialize;
59 picl_shutdown_func_t _picl_shutdown;
60 picl_get_root_func_t _picl_get_root;
61 picl_walk_tree_by_class_func_t _picl_walk_tree_by_class;
62 picl_get_prop_by_name_func_t _picl_get_prop_by_name;
63 picl_get_propval_func_t _picl_get_propval;
64 picl_get_propinfo_func_t _picl_get_propinfo;
65 // Handle to the library that is returned by dlopen
66 void *_dl_handle;
67
68 bool open_library();
69 void close_library();
70
71 template<typename FuncType> bool bind(FuncType& func, const char* name);
72 bool bind_library_functions();
73
74 // Get a value of the integer property. The value in the tree can be either 32 or 64 bit
75 // depending on the platform. The result is converted to int.
76 int get_int_property(picl_nodehdl_t nodeh, const char* name, int* result) {
77 picl_propinfo_t pinfo;
78 picl_prophdl_t proph;
79 if (_picl_get_prop_by_name(nodeh, name, &proph) != PICL_SUCCESS ||
80 _picl_get_propinfo(proph, &pinfo) != PICL_SUCCESS) {
81 return PICL_FAILURE;
82 }
83
84 if (pinfo.type != PICL_PTYPE_INT && pinfo.type != PICL_PTYPE_UNSIGNED_INT) {
85 assert(false, "Invalid property type");
86 return PICL_FAILURE;
87 }
88 if (pinfo.size == sizeof(int64_t)) {
89 int64_t val;
90 if (_picl_get_propval(proph, &val, sizeof(int64_t)) != PICL_SUCCESS) {
91 return PICL_FAILURE;
92 }
93 *result = static_cast<int>(val);
94 } else if (pinfo.size == sizeof(int32_t)) {
95 int32_t val;
96 if (_picl_get_propval(proph, &val, sizeof(int32_t)) != PICL_SUCCESS) {
97 return PICL_FAILURE;
98 }
99 *result = static_cast<int>(val);
100 } else {
101 assert(false, "Unexpected integer property size");
102 return PICL_FAILURE;
103 }
104 return PICL_SUCCESS;
105 }
106
107 // Visitor and a state machine that visits integer properties and verifies that the
108 // values are the same. Stores the unique value observed.
109 class UniqueValueVisitor {
110 PICL *_picl;
111 enum {
112 INITIAL, // Start state, no assignments happened
113 ASSIGNED, // Assigned a value
114 INCONSISTENT // Inconsistent value seen
115 } _state;
116 int _value;
117 public:
118 UniqueValueVisitor(PICL* picl) : _picl(picl), _state(INITIAL) { }
119 int value() {
120 assert(_state == ASSIGNED, "Precondition");
121 return _value;
122 }
123 void set_value(int value) {
124 assert(_state == INITIAL, "Precondition");
125 _value = value;
126 _state = ASSIGNED;
127 }
128 bool is_initial() { return _state == INITIAL; }
129 bool is_assigned() { return _state == ASSIGNED; }
130 bool is_inconsistent() { return _state == INCONSISTENT; }
131 void set_inconsistent() { _state = INCONSISTENT; }
132
133 static int visit(picl_nodehdl_t nodeh, const char* name, void *arg) {
134 UniqueValueVisitor *state = static_cast<UniqueValueVisitor*>(arg);
135 PICL* picl = state->_picl;
136 assert(!state->is_inconsistent(), "Precondition");
137 int curr;
138 if (picl->get_int_property(nodeh, name, &curr) == PICL_SUCCESS) {
139 if (!state->is_assigned()) { // first iteration
140 state->set_value(curr);
141 } else if (curr != state->value()) { // following iterations
142 state->set_inconsistent();
143 }
144 }
145 if (state->is_inconsistent()) {
146 return PICL_WALK_TERMINATE;
147 }
148 return PICL_WALK_CONTINUE;
149 }
150 };
151
152 int _L1_data_cache_line_size;
153 int _L2_cache_line_size;
154 public:
155 static int get_l1_data_cache_line_size(picl_nodehdl_t nodeh, void *state) {
156 return UniqueValueVisitor::visit(nodeh, "l1-dcache-line-size", state);
157 }
158 static int get_l2_cache_line_size(picl_nodehdl_t nodeh, void *state) {
159 return UniqueValueVisitor::visit(nodeh, "l2-cache-line-size", state);
160 }
161
162 PICL() : _L1_data_cache_line_size(0), _L2_cache_line_size(0), _dl_handle(NULL) {
163 if (!open_library()) {
164 return;
165 }
166 if (_picl_initialize() == PICL_SUCCESS) {
167 picl_nodehdl_t rooth;
168 if (_picl_get_root(&rooth) == PICL_SUCCESS) {
169 UniqueValueVisitor L1_state(this);
170 // Visit all "cpu" class instances
171 _picl_walk_tree_by_class(rooth, "cpu", &L1_state, PICL_get_l1_data_cache_line_size_helper);
172 if (L1_state.is_initial()) { // Still initial, iteration found no values
173 // Try walk all "core" class instances, it might be a Fujitsu machine
174 _picl_walk_tree_by_class(rooth, "core", &L1_state, PICL_get_l1_data_cache_line_size_helper);
175 }
176 if (L1_state.is_assigned()) { // Is there a value?
177 _L1_data_cache_line_size = L1_state.value();
178 }
179
180 UniqueValueVisitor L2_state(this);
181 _picl_walk_tree_by_class(rooth, "cpu", &L2_state, PICL_get_l2_cache_line_size_helper);
182 if (L2_state.is_initial()) {
183 _picl_walk_tree_by_class(rooth, "core", &L2_state, PICL_get_l2_cache_line_size_helper);
184 }
185 if (L2_state.is_assigned()) {
186 _L2_cache_line_size = L2_state.value();
187 }
188 }
189 _picl_shutdown();
190 }
191 close_library();
192 }
193
194 unsigned int L1_data_cache_line_size() const { return _L1_data_cache_line_size; }
195 unsigned int L2_cache_line_size() const { return _L2_cache_line_size; }
196 };
197
198 extern "C" static int PICL_get_l1_data_cache_line_size_helper(picl_nodehdl_t nodeh, void *result) {
199 return PICL::get_l1_data_cache_line_size(nodeh, result);
200 }
201 extern "C" static int PICL_get_l2_cache_line_size_helper(picl_nodehdl_t nodeh, void *result) {
202 return PICL::get_l2_cache_line_size(nodeh, result);
203 }
204
205 template<typename FuncType>
206 bool PICL::bind(FuncType& func, const char* name) {
207 func = reinterpret_cast<FuncType>(dlsym(_dl_handle, name));
208 return func != NULL;
209 }
210
211 bool PICL::bind_library_functions() {
212 assert(_dl_handle != NULL, "library should be open");
213 return bind(_picl_initialize, "picl_initialize" ) &&
214 bind(_picl_shutdown, "picl_shutdown" ) &&
215 bind(_picl_get_root, "picl_get_root" ) &&
216 bind(_picl_walk_tree_by_class, "picl_walk_tree_by_class") &&
217 bind(_picl_get_prop_by_name, "picl_get_prop_by_name" ) &&
218 bind(_picl_get_propval, "picl_get_propval" ) &&
219 bind(_picl_get_propinfo, "picl_get_propinfo" );
220 }
221
222 bool PICL::open_library() {
223 _dl_handle = dlopen("libpicl.so.1", RTLD_LAZY);
224 if (_dl_handle == NULL) {
225 warning("PICL (libpicl.so.1) is missing. Performance will not be optimal.");
226 return false;
227 }
228 if (!bind_library_functions()) {
229 assert(false, "unexpected PICL API change");
230 close_library();
231 return false;
232 }
233 return true;
234 }
235
236 void PICL::close_library() {
237 assert(_dl_handle != NULL, "library should be open");
238 dlclose(_dl_handle);
239 _dl_handle = NULL;
240 }
241
242 // We need to keep these here as long as we have to build on Solaris
243 // versions before 10.
244 #ifndef SI_ARCHITECTURE_32
245 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */
246 #endif
247
248 #ifndef SI_ARCHITECTURE_64
249 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */
250 #endif
251
252 static void do_sysinfo(int si, const char* string, int* features, int mask) {
253 char tmp;
254 size_t bufsize = sysinfo(si, &tmp, 1);
255
256 // All SI defines used below must be supported.
257 guarantee(bufsize != -1, "must be supported");
258
259 char* buf = (char*) os::malloc(bufsize, mtInternal);
260
261 if (buf == NULL)
262 return;
263
264 if (sysinfo(si, buf, bufsize) == bufsize) {
265 // Compare the string.
266 if (strcmp(buf, string) == 0) {
267 *features |= mask;
268 }
269 }
270
271 os::free(buf);
272 }
273
274 int VM_Version::platform_features(int features) {
275 assert(os::Solaris::supports_getisax(), "getisax() must be available");
276
277 // Check 32-bit architecture.
278 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m);
279
280 // Check 64-bit architecture.
281 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m);
282
283 // Extract valid instruction set extensions.
284 uint_t avs[2];
285 uint_t avn = os::Solaris::getisax(avs, 2);
286 assert(avn <= 2, "should return two or less av's");
287 uint_t av = avs[0];
288
289 #ifndef PRODUCT
290 if (PrintMiscellaneous && Verbose) {
291 tty->print("getisax(2) returned: " PTR32_FORMAT, av);
292 if (avn > 1) {
293 tty->print(", " PTR32_FORMAT, avs[1]);
294 }
295 tty->cr();
296 }
297 #endif
298
299 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m;
300 if (av & AV_SPARC_DIV32) features |= hardware_div32_m;
301 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m;
302 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m;
303 if (av & AV_SPARC_POPC) features |= hardware_popc_m;
304 if (av & AV_SPARC_VIS) features |= vis1_instructions_m;
305 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m;
306 if (avn > 1) {
307 uint_t av2 = avs[1];
308 #ifndef AV2_SPARC_SPARC5
309 #define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */
310 #endif
311 if (av2 & AV2_SPARC_SPARC5) features |= sparc5_instructions_m;
312 }
313
314 // We only build on Solaris 10 and up, but some of the values below
315 // are not defined on all versions of Solaris 10, so we define them,
316 // if necessary.
317 #ifndef AV_SPARC_ASI_BLK_INIT
318 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */
319 #endif
320 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m;
321
322 #ifndef AV_SPARC_FMAF
323 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */
324 #endif
325 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m;
326
327 #ifndef AV_SPARC_FMAU
328 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */
329 #endif
330 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m;
331
332 #ifndef AV_SPARC_VIS3
333 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */
334 #endif
335 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m;
336
337 #ifndef AV_SPARC_CBCOND
338 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */
339 #endif
340 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m;
341
342 #ifndef AV_SPARC_AES
343 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */
344 #endif
345 if (av & AV_SPARC_AES) features |= aes_instructions_m;
346
347 #ifndef AV_SPARC_SHA1
348 #define AV_SPARC_SHA1 0x00400000 /* sha1 instruction supported */
349 #endif
350 if (av & AV_SPARC_SHA1) features |= sha1_instruction_m;
351
352 #ifndef AV_SPARC_SHA256
353 #define AV_SPARC_SHA256 0x00800000 /* sha256 instruction supported */
354 #endif
355 if (av & AV_SPARC_SHA256) features |= sha256_instruction_m;
356
357 #ifndef AV_SPARC_SHA512
358 #define AV_SPARC_SHA512 0x01000000 /* sha512 instruction supported */
359 #endif
360 if (av & AV_SPARC_SHA512) features |= sha512_instruction_m;
361
362 // Determine the machine type.
363 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m);
364
365 {
366 // Using kstat to determine the machine type.
367 kstat_ctl_t* kc = kstat_open();
368 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL);
369 const char* implementation = "UNKNOWN";
370 if (ksp != NULL) {
371 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) {
372 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data;
373 for (int i = 0; i < ksp->ks_ndata; i++) {
374 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) {
375 implementation = KSTAT_NAMED_STR_PTR(&knm[i]);
376 #ifndef PRODUCT
377 if (PrintMiscellaneous && Verbose) {
378 tty->print_cr("cpu_info.implementation: %s", implementation);
379 }
380 #endif
381 // Convert to UPPER case before compare.
382 char* impl = os::strdup_check_oom(implementation);
383
384 for (int i = 0; impl[i] != 0; i++)
385 impl[i] = (char)toupper((uint)impl[i]);
386
387 if (strstr(impl, "SPARC64") != NULL) {
388 features |= sparc64_family_m;
389 } else if (strstr(impl, "SPARC-M") != NULL) {
390 // M-series SPARC is based on T-series.
391 features |= (M_family_m | T_family_m);
392 } else if (strstr(impl, "SPARC-T") != NULL) {
393 features |= T_family_m;
394 if (strstr(impl, "SPARC-T1") != NULL) {
395 features |= T1_model_m;
396 }
397 } else {
398 if (strstr(impl, "SPARC") == NULL) {
399 #ifndef PRODUCT
400 // kstat on Solaris 8 virtual machines (branded zones)
401 // returns "(unsupported)" implementation. Solaris 8 is not
402 // supported anymore, but include this check to be on the
403 // safe side.
404 warning("kstat cpu_info implementation = '%s', assume generic SPARC", impl);
405 #endif
406 implementation = "SPARC";
407 }
408 }
409 os::free((void*)impl);
410 break;
411 }
412 } // for(
413 }
414 }
415 assert(strcmp(implementation, "UNKNOWN") != 0,
416 "unknown cpu info (changed kstat interface?)");
417 kstat_close(kc);
418 }
419
420 // Figure out cache line sizes using PICL
421 PICL picl;
422 _L1_data_cache_line_size = picl.L1_data_cache_line_size();
423 _L2_cache_line_size = picl.L2_cache_line_size();
424
425 return features;
426 }