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 37 extern "C" static int PICL_get_l1_data_cache_line_size_helper(picl_nodehdl_t nodeh, void *result); 38 extern "C" static int PICL_get_l2_cache_line_size_helper(picl_nodehdl_t nodeh, void *result); 39 40 class PICL { 41 // Get a value of the integer property. The value in the tree can be either 32 or 64 bit 42 // depending on the platform. The result is converted to int. 43 static int get_int_property(picl_nodehdl_t nodeh, const char* name, int* result) { 44 picl_propinfo_t pinfo; 45 picl_prophdl_t proph; 46 if (picl_get_prop_by_name(nodeh, name, &proph) != PICL_SUCCESS || 47 picl_get_propinfo(proph, &pinfo) != PICL_SUCCESS) { 48 return PICL_FAILURE; 49 } 50 51 if (pinfo.type != PICL_PTYPE_INT && pinfo.type != PICL_PTYPE_UNSIGNED_INT) { 52 assert(false, "Invalid property type"); 53 return PICL_FAILURE; 54 } 55 if (pinfo.size == sizeof(int64_t)) { 56 int64_t val; 57 if (picl_get_propval(proph, &val, sizeof(int64_t)) != PICL_SUCCESS) { 58 return PICL_FAILURE; 59 } 60 *result = static_cast<int>(val); 61 } else if (pinfo.size == sizeof(int32_t)) { 62 int32_t val; 63 if (picl_get_propval(proph, &val, sizeof(int32_t)) != PICL_SUCCESS) { 64 return PICL_FAILURE; 65 } 66 *result = static_cast<int>(val); 67 } else { 68 assert(false, "Unexpected integer property size"); 69 return PICL_FAILURE; 70 } 71 return PICL_SUCCESS; 72 } 73 74 // Visitor and a state machine that visits integer properties and verifies that the 75 // values are the same. Stores the unique value observed. 76 class UniqueValueVisitor { 77 enum { 78 INITIAL, // Start state, no assignments happened 79 ASSIGNED, // Assigned a value 80 INCONSISTENT // Inconsistent value seen 81 } _state; 82 int _value; 83 public: 84 UniqueValueVisitor() : _state(INITIAL) { } 85 int value() { 86 assert(_state == ASSIGNED, "Precondition"); 87 return _value; 88 } 89 void set_value(int value) { 90 assert(_state == INITIAL, "Precondition"); 91 _value = value; 92 _state = ASSIGNED; 93 } 94 bool is_initial() { return _state == INITIAL; } 95 bool is_assigned() { return _state == ASSIGNED; } 96 bool is_inconsistent() { return _state == INCONSISTENT; } 97 void set_inconsistent() { _state = INCONSISTENT; } 98 99 static int visit(picl_nodehdl_t nodeh, const char* name, void *arg) { 100 UniqueValueVisitor *state = static_cast<UniqueValueVisitor*>(arg); 101 assert(!state->is_inconsistent(), "Precondition"); 102 int curr; 103 if (PICL::get_int_property(nodeh, name, &curr) == PICL_SUCCESS) { 104 if (!state->is_assigned()) { // first iteration 105 state->set_value(curr); 106 } else if (curr != state->value()) { // following iterations 107 state->set_inconsistent(); 108 } 109 } 110 if (state->is_inconsistent()) { 111 return PICL_WALK_TERMINATE; 112 } 113 return PICL_WALK_CONTINUE; 114 } 115 }; 116 117 int _L1_data_cache_line_size; 118 int _L2_cache_line_size; 119 public: 120 static int get_l1_data_cache_line_size(picl_nodehdl_t nodeh, void *state) { 121 return UniqueValueVisitor::visit(nodeh, "l1-dcache-line-size", state); 122 } 123 static int get_l2_cache_line_size(picl_nodehdl_t nodeh, void *state) { 124 return UniqueValueVisitor::visit(nodeh, "l2-cache-line-size", state); 125 } 126 127 PICL() : _L1_data_cache_line_size(0), _L2_cache_line_size(0) { 128 if (picl_initialize() == PICL_SUCCESS) { 129 picl_nodehdl_t rooth; 130 if (picl_get_root(&rooth) == PICL_SUCCESS) { 131 UniqueValueVisitor L1_state; 132 // Visit all "cpu" class instances 133 picl_walk_tree_by_class(rooth, "cpu", &L1_state, PICL_get_l1_data_cache_line_size_helper); 134 if (L1_state.is_initial()) { // Still initial, iteration found no values 135 // Try walk all "core" class instances, it might be a Fujitsu machine 136 picl_walk_tree_by_class(rooth, "core", &L1_state, PICL_get_l1_data_cache_line_size_helper); 137 } 138 if (L1_state.is_assigned()) { // Is there a value? 139 _L1_data_cache_line_size = L1_state.value(); 140 } 141 142 UniqueValueVisitor L2_state; 143 picl_walk_tree_by_class(rooth, "cpu", &L2_state, PICL_get_l2_cache_line_size_helper); 144 if (L2_state.is_initial()) { 145 picl_walk_tree_by_class(rooth, "core", &L2_state, PICL_get_l2_cache_line_size_helper); 146 } 147 if (L2_state.is_assigned()) { 148 _L2_cache_line_size = L2_state.value(); 149 } 150 } 151 picl_shutdown(); 152 } 153 } 154 155 unsigned int L1_data_cache_line_size() const { return _L1_data_cache_line_size; } 156 unsigned int L2_cache_line_size() const { return _L2_cache_line_size; } 157 }; 158 159 extern "C" static int PICL_get_l1_data_cache_line_size_helper(picl_nodehdl_t nodeh, void *result) { 160 return PICL::get_l1_data_cache_line_size(nodeh, result); 161 } 162 extern "C" static int PICL_get_l2_cache_line_size_helper(picl_nodehdl_t nodeh, void *result) { 163 return PICL::get_l2_cache_line_size(nodeh, result); 164 } 165 166 // We need to keep these here as long as we have to build on Solaris 167 // versions before 10. 168 #ifndef SI_ARCHITECTURE_32 169 #define SI_ARCHITECTURE_32 516 /* basic 32-bit SI_ARCHITECTURE */ 170 #endif 171 172 #ifndef SI_ARCHITECTURE_64 173 #define SI_ARCHITECTURE_64 517 /* basic 64-bit SI_ARCHITECTURE */ 174 #endif 175 176 static void do_sysinfo(int si, const char* string, int* features, int mask) { 177 char tmp; 178 size_t bufsize = sysinfo(si, &tmp, 1); 179 180 // All SI defines used below must be supported. 181 guarantee(bufsize != -1, "must be supported"); 182 183 char* buf = (char*) os::malloc(bufsize, mtInternal); 184 185 if (buf == NULL) 186 return; 187 188 if (sysinfo(si, buf, bufsize) == bufsize) { 189 // Compare the string. 190 if (strcmp(buf, string) == 0) { 191 *features |= mask; 192 } 193 } 194 195 os::free(buf); 196 } 197 198 int VM_Version::platform_features(int features) { 199 assert(os::Solaris::supports_getisax(), "getisax() must be available"); 200 201 // Check 32-bit architecture. 202 do_sysinfo(SI_ARCHITECTURE_32, "sparc", &features, v8_instructions_m); 203 204 // Check 64-bit architecture. 205 do_sysinfo(SI_ARCHITECTURE_64, "sparcv9", &features, generic_v9_m); 206 207 // Extract valid instruction set extensions. 208 uint_t avs[2]; 209 uint_t avn = os::Solaris::getisax(avs, 2); 210 assert(avn <= 2, "should return two or less av's"); 211 uint_t av = avs[0]; 212 213 #ifndef PRODUCT 214 if (PrintMiscellaneous && Verbose) { 215 tty->print("getisax(2) returned: " PTR32_FORMAT, av); 216 if (avn > 1) { 217 tty->print(", " PTR32_FORMAT, avs[1]); 218 } 219 tty->cr(); 220 } 221 #endif 222 223 if (av & AV_SPARC_MUL32) features |= hardware_mul32_m; 224 if (av & AV_SPARC_DIV32) features |= hardware_div32_m; 225 if (av & AV_SPARC_FSMULD) features |= hardware_fsmuld_m; 226 if (av & AV_SPARC_V8PLUS) features |= v9_instructions_m; 227 if (av & AV_SPARC_POPC) features |= hardware_popc_m; 228 if (av & AV_SPARC_VIS) features |= vis1_instructions_m; 229 if (av & AV_SPARC_VIS2) features |= vis2_instructions_m; 230 if (avn > 1) { 231 uint_t av2 = avs[1]; 232 #ifndef AV2_SPARC_SPARC5 233 #define AV2_SPARC_SPARC5 0x00000008 /* The 29 new fp and sub instructions */ 234 #endif 235 if (av2 & AV2_SPARC_SPARC5) features |= sparc5_instructions_m; 236 } 237 238 // We only build on Solaris 10 and up, but some of the values below 239 // are not defined on all versions of Solaris 10, so we define them, 240 // if necessary. 241 #ifndef AV_SPARC_ASI_BLK_INIT 242 #define AV_SPARC_ASI_BLK_INIT 0x0080 /* ASI_BLK_INIT_xxx ASI */ 243 #endif 244 if (av & AV_SPARC_ASI_BLK_INIT) features |= blk_init_instructions_m; 245 246 #ifndef AV_SPARC_FMAF 247 #define AV_SPARC_FMAF 0x0100 /* Fused Multiply-Add */ 248 #endif 249 if (av & AV_SPARC_FMAF) features |= fmaf_instructions_m; 250 251 #ifndef AV_SPARC_FMAU 252 #define AV_SPARC_FMAU 0x0200 /* Unfused Multiply-Add */ 253 #endif 254 if (av & AV_SPARC_FMAU) features |= fmau_instructions_m; 255 256 #ifndef AV_SPARC_VIS3 257 #define AV_SPARC_VIS3 0x0400 /* VIS3 instruction set extensions */ 258 #endif 259 if (av & AV_SPARC_VIS3) features |= vis3_instructions_m; 260 261 #ifndef AV_SPARC_CBCOND 262 #define AV_SPARC_CBCOND 0x10000000 /* compare and branch instrs supported */ 263 #endif 264 if (av & AV_SPARC_CBCOND) features |= cbcond_instructions_m; 265 266 #ifndef AV_SPARC_AES 267 #define AV_SPARC_AES 0x00020000 /* aes instrs supported */ 268 #endif 269 if (av & AV_SPARC_AES) features |= aes_instructions_m; 270 271 #ifndef AV_SPARC_SHA1 272 #define AV_SPARC_SHA1 0x00400000 /* sha1 instruction supported */ 273 #endif 274 if (av & AV_SPARC_SHA1) features |= sha1_instruction_m; 275 276 #ifndef AV_SPARC_SHA256 277 #define AV_SPARC_SHA256 0x00800000 /* sha256 instruction supported */ 278 #endif 279 if (av & AV_SPARC_SHA256) features |= sha256_instruction_m; 280 281 #ifndef AV_SPARC_SHA512 282 #define AV_SPARC_SHA512 0x01000000 /* sha512 instruction supported */ 283 #endif 284 if (av & AV_SPARC_SHA512) features |= sha512_instruction_m; 285 286 // Determine the machine type. 287 do_sysinfo(SI_MACHINE, "sun4v", &features, sun4v_m); 288 289 { 290 // Using kstat to determine the machine type. 291 kstat_ctl_t* kc = kstat_open(); 292 kstat_t* ksp = kstat_lookup(kc, (char*)"cpu_info", -1, NULL); 293 const char* implementation = "UNKNOWN"; 294 if (ksp != NULL) { 295 if (kstat_read(kc, ksp, NULL) != -1 && ksp->ks_data != NULL) { 296 kstat_named_t* knm = (kstat_named_t *)ksp->ks_data; 297 for (int i = 0; i < ksp->ks_ndata; i++) { 298 if (strcmp((const char*)&(knm[i].name),"implementation") == 0) { 299 implementation = KSTAT_NAMED_STR_PTR(&knm[i]); 300 #ifndef PRODUCT 301 if (PrintMiscellaneous && Verbose) { 302 tty->print_cr("cpu_info.implementation: %s", implementation); 303 } 304 #endif 305 // Convert to UPPER case before compare. 306 char* impl = os::strdup_check_oom(implementation); 307 308 for (int i = 0; impl[i] != 0; i++) 309 impl[i] = (char)toupper((uint)impl[i]); 310 311 if (strstr(impl, "SPARC64") != NULL) { 312 features |= sparc64_family_m; 313 } else if (strstr(impl, "SPARC-M") != NULL) { 314 // M-series SPARC is based on T-series. 315 features |= (M_family_m | T_family_m); 316 } else if (strstr(impl, "SPARC-T") != NULL) { 317 features |= T_family_m; 318 if (strstr(impl, "SPARC-T1") != NULL) { 319 features |= T1_model_m; 320 } 321 } else { 322 if (strstr(impl, "SPARC") == NULL) { 323 #ifndef PRODUCT 324 // kstat on Solaris 8 virtual machines (branded zones) 325 // returns "(unsupported)" implementation. Solaris 8 is not 326 // supported anymore, but include this check to be on the 327 // safe side. 328 warning("kstat cpu_info implementation = '%s', assume generic SPARC", impl); 329 #endif 330 implementation = "SPARC"; 331 } 332 } 333 os::free((void*)impl); 334 break; 335 } 336 } // for( 337 } 338 } 339 assert(strcmp(implementation, "UNKNOWN") != 0, 340 "unknown cpu info (changed kstat interface?)"); 341 kstat_close(kc); 342 } 343 344 // Figure out cache line sizes using PICL 345 PICL picl; 346 _L1_data_cache_line_size = picl.L1_data_cache_line_size(); 347 _L2_cache_line_size = picl.L2_cache_line_size(); 348 349 return features; 350 }