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 required for better performance"); 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 }