1 /*
   2  * Copyright (c) 2003, 2013, 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 /* This file is auto-generated */
  26 #include "JvmOffsetsIndex.h"
  27 
  28 #define DEBUG
  29 
  30 #ifdef DEBUG
  31 #define MARK_LINE this->line = __LINE__
  32 #else
  33 #define MARK_LINE 
  34 #endif
  35 
  36 #ifdef _LP64
  37 #define STACK_BIAS 0x7ff
  38 #define pointer uint64_t
  39 #else
  40 #define STACK_BIAS 0
  41 #define pointer uint32_t
  42 #endif
  43 
  44 extern pointer __JvmOffsets;
  45 
  46 extern pointer __1cJCodeCacheF_heap_;
  47 extern pointer __1cIUniverseO_collectedHeap_;
  48 
  49 extern pointer __1cHnmethodG__vtbl_;
  50 extern pointer __1cGMethodG__vtbl_;
  51 extern pointer __1cKBufferBlobG__vtbl_;
  52 
  53 #define copyin_ptr(ADDR)    *(pointer*)  copyin((pointer) (ADDR), sizeof(pointer))
  54 #define copyin_uchar(ADDR)  *(uchar_t*)  copyin((pointer) (ADDR), sizeof(uchar_t))
  55 #define copyin_uint16(ADDR) *(uint16_t*) copyin((pointer) (ADDR), sizeof(uint16_t))
  56 #define copyin_uint32(ADDR) *(uint32_t*) copyin((pointer) (ADDR), sizeof(uint32_t))
  57 #define copyin_int32(ADDR)  *(int32_t*)  copyin((pointer) (ADDR), sizeof(int32_t))
  58 #define copyin_uint8(ADDR)  *(uint8_t*)  copyin((pointer) (ADDR), sizeof(uint8_t))
  59 
  60 #define SAME(x) x
  61 #define copyin_offset(JVM_CONST)  JVM_CONST = \
  62         copyin_int32(JvmOffsetsPtr + SAME(IDX_)JVM_CONST * sizeof(int32_t))
  63 
  64 int init_done;
  65 
  66 dtrace:helper:ustack:
  67 {
  68   MARK_LINE;
  69   this->done = 0;
  70   /*
  71    * TBD:
  72    * Here we initialize init_done, otherwise jhelper does not work.
  73    * Therefore, copyin_offset() statements work multiple times now.
  74    * There is a hope we could avoid it in the future, and so,
  75    * this initialization can be removed.
  76    */
  77   init_done  = 0;
  78   this->error = (char *) NULL;
  79   this->result = (char *) NULL;
  80   this->isMethod = 0;
  81   this->codecache = 0;
  82   this->klass = (pointer) NULL;
  83   this->vtbl  = (pointer) NULL;
  84   this->suffix = '\0';
  85 }
  86 
  87 dtrace:helper:ustack:
  88 {
  89   MARK_LINE;
  90   /* Initialization of JvmOffsets constants */
  91   JvmOffsetsPtr = (pointer) &``__JvmOffsets;
  92 }
  93 
  94 dtrace:helper:ustack:
  95 /!init_done && !this->done/
  96 {
  97   MARK_LINE;
  98   init_done = 1;
  99 
 100   copyin_offset(COMPILER);
 101   copyin_offset(OFFSET_CollectedHeap_reserved);
 102   copyin_offset(OFFSET_MemRegion_start);
 103   copyin_offset(OFFSET_MemRegion_word_size);
 104   copyin_offset(SIZE_HeapWord);
 105 
 106   copyin_offset(OFFSET_interpreter_frame_method);
 107   copyin_offset(OFFSET_Klass_name);
 108   copyin_offset(OFFSET_ConstantPool_pool_holder);
 109 
 110   copyin_offset(OFFSET_HeapBlockHeader_used);
 111   copyin_offset(OFFSET_oopDesc_metadata);
 112 
 113   copyin_offset(OFFSET_Symbol_length);
 114   copyin_offset(OFFSET_Symbol_body);
 115 
 116   copyin_offset(OFFSET_Method_constMethod);
 117   copyin_offset(OFFSET_ConstMethod_constants);
 118   copyin_offset(OFFSET_ConstMethod_name_index);
 119   copyin_offset(OFFSET_ConstMethod_signature_index);
 120 
 121   copyin_offset(OFFSET_CodeHeap_memory);
 122   copyin_offset(OFFSET_CodeHeap_segmap);
 123   copyin_offset(OFFSET_CodeHeap_log2_segment_size);
 124 
 125   copyin_offset(OFFSET_VirtualSpace_low);
 126   copyin_offset(OFFSET_VirtualSpace_high);
 127 
 128   copyin_offset(OFFSET_CodeBlob_name);
 129 
 130   copyin_offset(OFFSET_nmethod_method);
 131   copyin_offset(SIZE_HeapBlockHeader);
 132   copyin_offset(SIZE_oopDesc);
 133   copyin_offset(SIZE_ConstantPool);
 134 
 135   copyin_offset(OFFSET_NarrowPtrStruct_base);
 136   copyin_offset(OFFSET_NarrowPtrStruct_shift);
 137 
 138   /*
 139    * The PC to translate is in arg0.
 140    */
 141   this->pc = arg0;
 142 
 143   /*
 144    * The methodPtr is in %l2 on SPARC.  This can be found at
 145    * offset 8 from the frame pointer on 32-bit processes.
 146    */
 147 #if   defined(__sparc)
 148   this->methodPtr = copyin_ptr(arg1 + 2 * sizeof(pointer) + STACK_BIAS);
 149 #elif defined(__i386) || defined(__amd64)
 150   this->methodPtr = copyin_ptr(arg1 + OFFSET_interpreter_frame_method);
 151 #else
 152 #error "Don't know architecture"
 153 #endif
 154 
 155   this->CodeCache_heap_address = copyin_ptr(&``__1cJCodeCacheF_heap_);
 156 
 157   this->CodeCache_low = copyin_ptr(this->CodeCache_heap_address + 
 158       OFFSET_CodeHeap_memory + OFFSET_VirtualSpace_low);
 159 
 160   this->CodeCache_high = copyin_ptr(this->CodeCache_heap_address +
 161       OFFSET_CodeHeap_memory + OFFSET_VirtualSpace_high);
 162 
 163   this->CodeCache_segmap_low = copyin_ptr(this->CodeCache_heap_address +
 164       OFFSET_CodeHeap_segmap + OFFSET_VirtualSpace_low);
 165 
 166   this->CodeCache_segmap_high = copyin_ptr(this->CodeCache_heap_address +
 167       OFFSET_CodeHeap_segmap + OFFSET_VirtualSpace_high);
 168 
 169   this->CodeHeap_log2_segment_size = copyin_uint32(
 170       this->CodeCache_heap_address + OFFSET_CodeHeap_log2_segment_size);
 171 
 172   this->Method_vtbl             = (pointer) &``__1cGMethodG__vtbl_;
 173 
 174   /*
 175    * Get Java heap bounds
 176    */
 177   this->Universe_collectedHeap = copyin_ptr(&``__1cIUniverseO_collectedHeap_);
 178   this->heap_start = copyin_ptr(this->Universe_collectedHeap +
 179       OFFSET_CollectedHeap_reserved +
 180       OFFSET_MemRegion_start);
 181   this->heap_size = SIZE_HeapWord *
 182     copyin_ptr(this->Universe_collectedHeap +
 183         OFFSET_CollectedHeap_reserved +
 184         OFFSET_MemRegion_word_size
 185         );
 186   this->heap_end = this->heap_start + this->heap_size;
 187 }
 188 
 189 dtrace:helper:ustack:
 190 /!this->done &&
 191 this->CodeCache_low <= this->pc && this->pc < this->CodeCache_high/
 192 {
 193   MARK_LINE;
 194   this->codecache = 1;
 195 
 196   /*
 197    * Find start.
 198    */
 199   this->segment = (this->pc - this->CodeCache_low) >>
 200     this->CodeHeap_log2_segment_size;
 201   this->block = this->CodeCache_segmap_low;
 202   this->tag = copyin_uchar(this->block + this->segment);
 203   "second";
 204 }
 205 
 206 dtrace:helper:ustack:
 207 /!this->done && this->codecache && this->tag > 0/
 208 {
 209   MARK_LINE;
 210   this->tag = copyin_uchar(this->block + this->segment);
 211   this->segment = this->segment - this->tag;
 212 }
 213 
 214 dtrace:helper:ustack:
 215 /!this->done && this->codecache && this->tag > 0/
 216 {
 217   MARK_LINE;
 218   this->tag = copyin_uchar(this->block + this->segment);
 219   this->segment = this->segment - this->tag;
 220 }
 221 
 222 dtrace:helper:ustack:
 223 /!this->done && this->codecache && this->tag > 0/
 224 {
 225   MARK_LINE;
 226   this->tag = copyin_uchar(this->block + this->segment);
 227   this->segment = this->segment - this->tag;
 228 }
 229 
 230 dtrace:helper:ustack:
 231 /!this->done && this->codecache && this->tag > 0/
 232 {
 233   MARK_LINE;
 234   this->tag = copyin_uchar(this->block + this->segment);
 235   this->segment = this->segment - this->tag;
 236 }
 237 
 238 dtrace:helper:ustack:
 239 /!this->done && this->codecache && this->tag > 0/
 240 {
 241   MARK_LINE;
 242   this->tag = copyin_uchar(this->block + this->segment);
 243   this->segment = this->segment - this->tag;
 244 }
 245 
 246 dtrace:helper:ustack:
 247 /!this->done && this->codecache && this->tag > 0/
 248 {
 249   MARK_LINE;
 250   this->error = "<couldn't find start>";
 251   this->done = 1;
 252 }
 253 
 254 dtrace:helper:ustack:
 255 /!this->done && this->codecache/
 256 {
 257   MARK_LINE;
 258   this->block = this->CodeCache_low +
 259     (this->segment << this->CodeHeap_log2_segment_size);
 260   this->used = copyin_uint32(this->block + OFFSET_HeapBlockHeader_used);
 261 }
 262 
 263 dtrace:helper:ustack:
 264 /!this->done && this->codecache && !this->used/
 265 {
 266   MARK_LINE;
 267   this->error = "<block not in use>";
 268   this->done = 1;
 269 }
 270 
 271 dtrace:helper:ustack:
 272 /!this->done && this->codecache/
 273 {
 274   MARK_LINE;
 275   this->start = this->block + SIZE_HeapBlockHeader;
 276   this->vtbl = copyin_ptr(this->start);
 277 
 278   this->nmethod_vtbl            = (pointer) &``__1cHnmethodG__vtbl_;
 279   this->BufferBlob_vtbl         = (pointer) &``__1cKBufferBlobG__vtbl_;
 280 }
 281 
 282 dtrace:helper:ustack:
 283 /!this->done && this->vtbl == this->nmethod_vtbl/
 284 {
 285   MARK_LINE;
 286   this->methodPtr = copyin_ptr(this->start + OFFSET_nmethod_method);
 287   this->suffix = '*';
 288   this->isMethod = 1;
 289 }
 290 
 291 dtrace:helper:ustack:
 292 /!this->done && this->vtbl == this->BufferBlob_vtbl/
 293 {
 294   MARK_LINE;
 295   this->name = copyin_ptr(this->start + OFFSET_CodeBlob_name);
 296 }
 297 
 298 
 299 dtrace:helper:ustack:
 300 /!this->done && this->vtbl == this->BufferBlob_vtbl && this->methodPtr != 0/
 301 {
 302   MARK_LINE;
 303   this->klass = copyin_ptr(this->methodPtr);
 304   this->isMethod = this->klass == this->Method_vtbl;
 305   this->done = !this->isMethod;
 306 }
 307 
 308 dtrace:helper:ustack:
 309 /!this->done && !this->isMethod/
 310 {
 311   MARK_LINE;
 312   this->name = copyin_ptr(this->start + OFFSET_CodeBlob_name);
 313   this->result = this->name != 0 ? copyinstr(this->name) : "<CodeBlob>";
 314   this->done = 1;
 315 }
 316 
 317 dtrace:helper:ustack:
 318 /!this->done && this->isMethod/
 319 {
 320   MARK_LINE;
 321   this->constMethod = copyin_ptr(this->methodPtr +
 322       OFFSET_Method_constMethod);
 323 
 324   this->nameIndex = copyin_uint16(this->constMethod +
 325       OFFSET_ConstMethod_name_index);
 326 
 327   this->signatureIndex = copyin_uint16(this->constMethod +
 328       OFFSET_ConstMethod_signature_index);
 329 
 330   this->constantPool = copyin_ptr(this->constMethod +
 331       OFFSET_ConstMethod_constants);
 332 
 333   this->nameSymbol = copyin_ptr(this->constantPool +
 334       this->nameIndex * sizeof (pointer) + SIZE_ConstantPool);
 335   /* The symbol is a CPSlot and has lower bit set to indicate metadata */
 336   this->nameSymbol &= (~1); /* remove metadata lsb */
 337 
 338   this->nameSymbolLength = copyin_uint16(this->nameSymbol +
 339       OFFSET_Symbol_length);
 340 
 341   this->signatureSymbol = copyin_ptr(this->constantPool +
 342       this->signatureIndex * sizeof (pointer) + SIZE_ConstantPool);
 343   this->signatureSymbol &= (~1); /* remove metadata lsb */
 344 
 345   this->signatureSymbolLength = copyin_uint16(this->signatureSymbol +
 346       OFFSET_Symbol_length);
 347 
 348   this->klassPtr = copyin_ptr(this->constantPool +
 349       OFFSET_ConstantPool_pool_holder);
 350 
 351   this->klassSymbol = copyin_ptr(this->klassPtr +
 352       OFFSET_Klass_name);
 353 
 354   this->klassSymbolLength = copyin_uint16(this->klassSymbol +
 355       OFFSET_Symbol_length);
 356 
 357   /*
 358    * Enough for three strings, plus the '.', plus the trailing '\0'.
 359    */
 360   this->result = (char *) alloca(this->klassSymbolLength +
 361       this->nameSymbolLength +
 362       this->signatureSymbolLength + 2 + 1);
 363 
 364   copyinto(this->klassSymbol + OFFSET_Symbol_body,
 365       this->klassSymbolLength, this->result);
 366 
 367   /*
 368    * Add the '.' between the class and the name.
 369    */
 370   this->result[this->klassSymbolLength] = '.';
 371 
 372   copyinto(this->nameSymbol + OFFSET_Symbol_body,
 373       this->nameSymbolLength,
 374       this->result + this->klassSymbolLength + 1);
 375 
 376   copyinto(this->signatureSymbol + OFFSET_Symbol_body,
 377       this->signatureSymbolLength,
 378       this->result + this->klassSymbolLength +
 379       this->nameSymbolLength + 1);
 380 
 381   /*
 382    * Now we need to add a trailing '\0' and possibly a tag character.
 383    */
 384   this->result[this->klassSymbolLength + 1 + 
 385       this->nameSymbolLength +
 386       this->signatureSymbolLength] = this->suffix;
 387   this->result[this->klassSymbolLength + 2 + 
 388       this->nameSymbolLength +
 389       this->signatureSymbolLength] = '\0';
 390 
 391   this->done = 1;
 392 }
 393 
 394 dtrace:helper:ustack:
 395 /this->done && this->error == (char *) NULL/
 396 {
 397   this->result;   
 398 }
 399 
 400 dtrace:helper:ustack:
 401 /this->done && this->error != (char *) NULL/
 402 {
 403   this->error;
 404 }
 405 
 406 dtrace:helper:ustack:
 407 /!this->done && this->codecache/
 408 {
 409   this->done = 1;
 410   "error";
 411 }
 412 
 413 
 414 dtrace:helper:ustack:
 415 /!this->done/
 416 {
 417   NULL;
 418 }