1 /* 2 * Copyright 2003-2007 Sun Microsystems, Inc. All Rights Reserved. 3 * Copyright 2007, 2008, 2009, 2010 Red Hat, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, 21 * CA 95054 USA or visit www.sun.com if you need additional information or 22 * have any questions. 23 * 24 */ 25 26 #include "incls/_precompiled.incl" 27 #include "incls/_frame_zero.cpp.incl" 28 29 #ifdef ASSERT 30 void RegisterMap::check_location_valid() { 31 ShouldNotCallThis(); 32 } 33 #endif 34 35 bool frame::is_interpreted_frame() const { 36 return zeroframe()->is_interpreter_frame(); 37 } 38 39 frame frame::sender_for_entry_frame(RegisterMap *map) const { 40 assert(zeroframe()->is_entry_frame(), "wrong type of frame"); 41 assert(map != NULL, "map must be set"); 42 assert(!entry_frame_is_first(), "next Java fp must be non zero"); 43 assert(entry_frame_call_wrapper()->anchor()->last_Java_sp() == sender_sp(), 44 "sender should be next Java frame"); 45 map->clear(); 46 assert(map->include_argument_oops(), "should be set by clear"); 47 return frame(zeroframe()->next(), sender_sp()); 48 } 49 50 frame frame::sender_for_nonentry_frame(RegisterMap *map) const { 51 assert(zeroframe()->is_interpreter_frame() || 52 zeroframe()->is_shark_frame() || 53 zeroframe()->is_fake_stub_frame(), "wrong type of frame"); 54 return frame(zeroframe()->next(), sender_sp()); 55 } 56 57 frame frame::sender(RegisterMap* map) const { 58 // Default is not to follow arguments; the various 59 // sender_for_xxx methods update this accordingly. 60 map->set_include_argument_oops(false); 61 62 if (is_entry_frame()) 63 return sender_for_entry_frame(map); 64 else 65 return sender_for_nonentry_frame(map); 66 } 67 68 #ifdef CC_INTERP 69 BasicObjectLock* frame::interpreter_frame_monitor_begin() const { 70 return get_interpreterState()->monitor_base(); 71 } 72 73 BasicObjectLock* frame::interpreter_frame_monitor_end() const { 74 return (BasicObjectLock*) get_interpreterState()->stack_base(); 75 } 76 #endif // CC_INTERP 77 78 void frame::patch_pc(Thread* thread, address pc) { 79 // We borrow this call to set the thread pointer in the interpreter 80 // state; the hook to set up deoptimized frames isn't supplied it. 81 assert(pc == NULL, "should be"); 82 get_interpreterState()->set_thread((JavaThread *) thread); 83 } 84 85 bool frame::safe_for_sender(JavaThread *thread) { 86 ShouldNotCallThis(); 87 } 88 89 void frame::pd_gc_epilog() { 90 } 91 92 bool frame::is_interpreted_frame_valid(JavaThread *thread) const { 93 ShouldNotCallThis(); 94 } 95 96 BasicType frame::interpreter_frame_result(oop* oop_result, 97 jvalue* value_result) { 98 assert(is_interpreted_frame(), "interpreted frame expected"); 99 methodOop method = interpreter_frame_method(); 100 BasicType type = method->result_type(); 101 intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address(); 102 oop obj; 103 104 switch (type) { 105 case T_VOID: 106 break; 107 case T_BOOLEAN: 108 value_result->z = *(jboolean *) tos_addr; 109 break; 110 case T_BYTE: 111 value_result->b = *(jbyte *) tos_addr; 112 break; 113 case T_CHAR: 114 value_result->c = *(jchar *) tos_addr; 115 break; 116 case T_SHORT: 117 value_result->s = *(jshort *) tos_addr; 118 break; 119 case T_INT: 120 value_result->i = *(jint *) tos_addr; 121 break; 122 case T_LONG: 123 value_result->j = *(jlong *) tos_addr; 124 break; 125 case T_FLOAT: 126 value_result->f = *(jfloat *) tos_addr; 127 break; 128 case T_DOUBLE: 129 value_result->d = *(jdouble *) tos_addr; 130 break; 131 132 case T_OBJECT: 133 case T_ARRAY: 134 if (method->is_native()) { 135 obj = get_interpreterState()->oop_temp(); 136 } 137 else { 138 oop* obj_p = (oop *) tos_addr; 139 obj = (obj_p == NULL) ? (oop) NULL : *obj_p; 140 } 141 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check"); 142 *oop_result = obj; 143 break; 144 145 default: 146 ShouldNotReachHere(); 147 } 148 149 return type; 150 } 151 152 int frame::frame_size(RegisterMap* map) const { 153 #ifdef PRODUCT 154 ShouldNotCallThis(); 155 #else 156 return 0; // make javaVFrame::print_value work 157 #endif // PRODUCT 158 } 159 160 intptr_t* frame::interpreter_frame_tos_at(jint offset) const { 161 int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize); 162 return &interpreter_frame_tos_address()[index]; 163 } 164 165 void frame::zero_print_on_error(int frame_index, 166 outputStream* st, 167 char* buf, 168 int buflen) const { 169 // Divide the buffer between the field and the value 170 buflen >>= 1; 171 char *fieldbuf = buf; 172 char *valuebuf = buf + buflen; 173 174 // Print each word of the frame 175 for (intptr_t *addr = sp(); addr <= fp(); addr++) { 176 int offset = fp() - addr; 177 178 // Fill in default values, then try and improve them 179 snprintf(fieldbuf, buflen, "word[%d]", offset); 180 snprintf(valuebuf, buflen, PTR_FORMAT, *addr); 181 zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen); 182 fieldbuf[buflen - 1] = '\0'; 183 valuebuf[buflen - 1] = '\0'; 184 185 // Print the result 186 st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf); 187 } 188 } 189 190 void ZeroFrame::identify_word(int frame_index, 191 int offset, 192 char* fieldbuf, 193 char* valuebuf, 194 int buflen) const { 195 switch (offset) { 196 case next_frame_off: 197 strncpy(fieldbuf, "next_frame", buflen); 198 break; 199 200 case frame_type_off: 201 strncpy(fieldbuf, "frame_type", buflen); 202 if (is_entry_frame()) 203 strncpy(valuebuf, "ENTRY_FRAME", buflen); 204 else if (is_interpreter_frame()) 205 strncpy(valuebuf, "INTERPRETER_FRAME", buflen); 206 else if (is_shark_frame()) 207 strncpy(valuebuf, "SHARK_FRAME", buflen); 208 else if (is_fake_stub_frame()) 209 strncpy(valuebuf, "FAKE_STUB_FRAME", buflen); 210 break; 211 212 default: 213 if (is_entry_frame()) { 214 as_entry_frame()->identify_word( 215 frame_index, offset, fieldbuf, valuebuf, buflen); 216 } 217 else if (is_interpreter_frame()) { 218 as_interpreter_frame()->identify_word( 219 frame_index, offset, fieldbuf, valuebuf, buflen); 220 } 221 else if (is_shark_frame()) { 222 as_shark_frame()->identify_word( 223 frame_index, offset, fieldbuf, valuebuf, buflen); 224 } 225 else if (is_fake_stub_frame()) { 226 as_fake_stub_frame()->identify_word( 227 frame_index, offset, fieldbuf, valuebuf, buflen); 228 } 229 } 230 } 231 232 void EntryFrame::identify_word(int frame_index, 233 int offset, 234 char* fieldbuf, 235 char* valuebuf, 236 int buflen) const { 237 switch (offset) { 238 case call_wrapper_off: 239 strncpy(fieldbuf, "call_wrapper", buflen); 240 break; 241 242 default: 243 snprintf(fieldbuf, buflen, "local[%d]", offset - 3); 244 } 245 } 246 247 void InterpreterFrame::identify_word(int frame_index, 248 int offset, 249 char* fieldbuf, 250 char* valuebuf, 251 int buflen) const { 252 interpreterState istate = interpreter_state(); 253 bool is_valid = istate->self_link() == istate; 254 intptr_t *addr = addr_of_word(offset); 255 256 // Fixed part 257 if (addr >= (intptr_t *) istate) { 258 const char *field = istate->name_of_field_at_address((address) addr); 259 if (field) { 260 if (is_valid && !strcmp(field, "_method")) { 261 istate->method()->name_and_sig_as_C_string(valuebuf, buflen); 262 } 263 else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) { 264 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)", 265 (intptr_t) istate->bcp(), 266 istate->method()->bci_from(istate->bcp())); 267 } 268 snprintf(fieldbuf, buflen, "%sistate->%s", 269 field[strlen(field) - 1] == ')' ? "(": "", field); 270 } 271 else if (addr == (intptr_t *) istate) { 272 strncpy(fieldbuf, "(vtable for istate)", buflen); 273 } 274 return; 275 } 276 277 // Variable part 278 if (!is_valid) 279 return; 280 281 // JNI stuff 282 if (istate->method()->is_native() && addr < istate->stack_base()) { 283 address hA = istate->method()->signature_handler(); 284 if (hA != NULL) { 285 if (hA != (address) InterpreterRuntime::slow_signature_handler) { 286 InterpreterRuntime::SignatureHandler *handler = 287 InterpreterRuntime::SignatureHandler::from_handlerAddr(hA); 288 289 intptr_t *params = istate->stack_base() - handler->argument_count(); 290 if (addr >= params) { 291 int param = addr - params; 292 const char *desc = ""; 293 if (param == 0) 294 desc = " (JNIEnv)"; 295 else if (param == 1) { 296 if (istate->method()->is_static()) 297 desc = " (mirror)"; 298 else 299 desc = " (this)"; 300 } 301 snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc); 302 return; 303 } 304 305 for (int i = 0; i < handler->argument_count(); i++) { 306 if (params[i] == (intptr_t) addr) { 307 snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i); 308 return; 309 } 310 } 311 } 312 } 313 return; 314 } 315 316 // Monitors and stack 317 identify_vp_word(frame_index, addr, 318 (intptr_t *) istate->monitor_base(), 319 istate->stack_base(), 320 fieldbuf, buflen); 321 } 322 323 void SharkFrame::identify_word(int frame_index, 324 int offset, 325 char* fieldbuf, 326 char* valuebuf, 327 int buflen) const { 328 // Fixed part 329 switch (offset) { 330 case pc_off: 331 strncpy(fieldbuf, "pc", buflen); 332 if (method()->is_oop()) { 333 nmethod *code = method()->code(); 334 if (code && code->pc_desc_at(pc())) { 335 SimpleScopeDesc ssd(code, pc()); 336 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)", 337 (intptr_t) pc(), ssd.bci()); 338 } 339 } 340 return; 341 342 case unextended_sp_off: 343 strncpy(fieldbuf, "unextended_sp", buflen); 344 return; 345 346 case method_off: 347 strncpy(fieldbuf, "method", buflen); 348 if (method()->is_oop()) { 349 method()->name_and_sig_as_C_string(valuebuf, buflen); 350 } 351 return; 352 353 case oop_tmp_off: 354 strncpy(fieldbuf, "oop_tmp", buflen); 355 return; 356 } 357 358 // Variable part 359 if (method()->is_oop()) { 360 identify_vp_word(frame_index, addr_of_word(offset), 361 addr_of_word(header_words + 1), 362 unextended_sp() + method()->max_stack(), 363 fieldbuf, buflen); 364 } 365 } 366 367 void ZeroFrame::identify_vp_word(int frame_index, 368 intptr_t* addr, 369 intptr_t* monitor_base, 370 intptr_t* stack_base, 371 char* fieldbuf, 372 int buflen) const { 373 // Monitors 374 if (addr >= stack_base && addr < monitor_base) { 375 int monitor_size = frame::interpreter_frame_monitor_size(); 376 int last_index = (monitor_base - stack_base) / monitor_size - 1; 377 int index = last_index - (addr - stack_base) / monitor_size; 378 intptr_t monitor = (intptr_t) ( 379 (BasicObjectLock *) monitor_base - 1 - index); 380 intptr_t offset = (intptr_t) addr - monitor; 381 382 if (offset == BasicObjectLock::obj_offset_in_bytes()) 383 snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index); 384 else if (offset == BasicObjectLock::lock_offset_in_bytes()) 385 snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index); 386 387 return; 388 } 389 390 // Expression stack 391 if (addr < stack_base) { 392 snprintf(fieldbuf, buflen, "%s[%d]", 393 frame_index == 0 ? "stack_word" : "local", 394 (int) (stack_base - addr - 1)); 395 return; 396 } 397 }