1 /*
   2  * Copyright (c) 2008, 2015, 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 "classfile/javaClasses.hpp"
  27 #include "code/codeCache.hpp"
  28 #include "compiler/disassembler.hpp"
  29 #include "gc/shared/cardTableModRefBS.hpp"
  30 #include "gc/shared/collectedHeap.hpp"
  31 #include "oops/oop.inline.hpp"
  32 #include "runtime/fprofiler.hpp"
  33 #include "runtime/handles.inline.hpp"
  34 #include "runtime/os.hpp"
  35 #include "runtime/stubCodeGenerator.hpp"
  36 #include "runtime/stubRoutines.hpp"
  37 #ifdef TARGET_ARCH_x86
  38 # include "depChecker_x86.hpp"
  39 #endif
  40 #ifdef TARGET_ARCH_sparc
  41 # include "depChecker_sparc.hpp"
  42 #endif
  43 #ifdef TARGET_ARCH_zero
  44 # include "depChecker_zero.hpp"
  45 #endif
  46 #ifdef TARGET_ARCH_arm
  47 # include "depChecker_arm.hpp"
  48 #endif
  49 #ifdef TARGET_ARCH_ppc
  50 # include "depChecker_ppc.hpp"
  51 #endif
  52 #ifdef TARGET_ARCH_aarch64
  53 # include "depChecker_aarch64.hpp"
  54 #endif
  55 #ifdef SHARK
  56 #include "shark/sharkEntry.hpp"
  57 #endif
  58 
  59 void*       Disassembler::_library               = NULL;
  60 bool        Disassembler::_tried_to_load_library = false;
  61 
  62 // This routine is in the shared library:
  63 Disassembler::decode_func_virtual Disassembler::_decode_instructions_virtual = NULL;
  64 Disassembler::decode_func Disassembler::_decode_instructions = NULL;
  65 
  66 static const char hsdis_library_name[] = "hsdis-" HOTSPOT_LIB_ARCH;
  67 static const char decode_instructions_virtual_name[] = "decode_instructions_virtual";
  68 static const char decode_instructions_name[] = "decode_instructions";
  69 static bool use_new_version = true;
  70 #define COMMENT_COLUMN  40 LP64_ONLY(+8) /*could be an option*/
  71 #define BYTES_COMMENT   ";..."  /* funky byte display comment */
  72 
  73 bool Disassembler::load_library() {
  74   if (_decode_instructions_virtual != NULL || _decode_instructions != NULL) {
  75     // Already succeeded.
  76     return true;
  77   }
  78   if (_tried_to_load_library) {
  79     // Do not try twice.
  80     // To force retry in debugger: assign _tried_to_load_library=0
  81     return false;
  82   }
  83   // Try to load it.
  84   char ebuf[1024];
  85   char buf[JVM_MAXPATHLEN];
  86   os::jvm_path(buf, sizeof(buf));
  87   int jvm_offset = -1;
  88   int lib_offset = -1;
  89 #ifdef STATIC_BUILD
  90   char* p = strrchr(buf, '/');
  91   *p = '\0';
  92   strcat(p, "/lib/");
  93   lib_offset = jvm_offset = strlen(buf);
  94 #else
  95   {
  96     // Match "jvm[^/]*" in jvm_path.
  97     const char* base = buf;
  98     const char* p = strrchr(buf, *os::file_separator());
  99     if (p != NULL) lib_offset = p - base + 1;
 100     p = strstr(p ? p : base, "jvm");
 101     if (p != NULL)  jvm_offset = p - base;
 102   }
 103 #endif
 104   // Find the disassembler shared library.
 105   // Search for several paths derived from libjvm, in this order:
 106   // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so  (for compatibility)
 107   // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
 108   // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so
 109   // 4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
 110   if (jvm_offset >= 0) {
 111     // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so
 112     strcpy(&buf[jvm_offset], hsdis_library_name);
 113     strcat(&buf[jvm_offset], os::dll_file_extension());
 114     _library = os::dll_load(buf, ebuf, sizeof ebuf);
 115     if (_library == NULL) {
 116       // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so
 117       strcpy(&buf[lib_offset], hsdis_library_name);
 118       strcat(&buf[lib_offset], os::dll_file_extension());
 119       _library = os::dll_load(buf, ebuf, sizeof ebuf);
 120     }
 121     if (_library == NULL) {
 122       // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so
 123       buf[lib_offset - 1] = '\0';
 124       const char* p = strrchr(buf, *os::file_separator());
 125       if (p != NULL) {
 126         lib_offset = p - buf + 1;
 127         strcpy(&buf[lib_offset], hsdis_library_name);
 128         strcat(&buf[lib_offset], os::dll_file_extension());
 129         _library = os::dll_load(buf, ebuf, sizeof ebuf);
 130       }
 131     }
 132   }
 133   if (_library == NULL) {
 134     // 4. hsdis-<arch>.so  (using LD_LIBRARY_PATH)
 135     strcpy(&buf[0], hsdis_library_name);
 136     strcat(&buf[0], os::dll_file_extension());
 137     _library = os::dll_load(buf, ebuf, sizeof ebuf);
 138   }
 139   if (_library != NULL) {
 140     _decode_instructions_virtual = CAST_TO_FN_PTR(Disassembler::decode_func_virtual,
 141                                           os::dll_lookup(_library, decode_instructions_virtual_name));
 142   }
 143   if (_decode_instructions_virtual == NULL) {
 144     // could not spot in new version, try old version
 145     _decode_instructions = CAST_TO_FN_PTR(Disassembler::decode_func,
 146                                           os::dll_lookup(_library, decode_instructions_name));
 147     use_new_version = false;
 148   } else {
 149     use_new_version = true;
 150   }
 151   _tried_to_load_library = true;
 152   if (_decode_instructions_virtual == NULL && _decode_instructions == NULL) {
 153     tty->print_cr("Could not load %s; %s; %s", buf,
 154                   ((_library != NULL)
 155                    ? "entry point is missing"
 156                    : (WizardMode || PrintMiscellaneous)
 157                    ? (const char*)ebuf
 158                    : "library not loadable"),
 159                   "PrintAssembly is disabled");
 160     return false;
 161   }
 162 
 163   // Success.
 164   tty->print_cr("Loaded disassembler from %s", buf);
 165   return true;
 166 }
 167 
 168 
 169 class decode_env {
 170  private:
 171   nmethod*      _nm;
 172   CodeBlob*     _code;
 173   CodeStrings   _strings;
 174   outputStream* _output;
 175   address       _start, _end;
 176 
 177   char          _option_buf[512];
 178   char          _print_raw;
 179   bool          _print_pc;
 180   bool          _print_bytes;
 181   address       _cur_insn;
 182   int           _total_ticks;
 183   int           _bytes_per_line; // arch-specific formatting option
 184 
 185   static bool match(const char* event, const char* tag) {
 186     size_t taglen = strlen(tag);
 187     if (strncmp(event, tag, taglen) != 0)
 188       return false;
 189     char delim = event[taglen];
 190     return delim == '\0' || delim == ' ' || delim == '/' || delim == '=';
 191   }
 192 
 193   void collect_options(const char* p) {
 194     if (p == NULL || p[0] == '\0')  return;
 195     size_t opt_so_far = strlen(_option_buf);
 196     if (opt_so_far + 1 + strlen(p) + 1 > sizeof(_option_buf))  return;
 197     char* fillp = &_option_buf[opt_so_far];
 198     if (opt_so_far > 0) *fillp++ = ',';
 199     strcat(fillp, p);
 200     // replace white space by commas:
 201     char* q = fillp;
 202     while ((q = strpbrk(q, " \t\n")) != NULL)
 203       *q++ = ',';
 204     // Note that multiple PrintAssemblyOptions flags accumulate with \n,
 205     // which we want to be changed to a comma...
 206   }
 207 
 208   void print_insn_labels();
 209   void print_insn_bytes(address pc0, address pc);
 210   void print_address(address value);
 211 
 212  public:
 213   decode_env(CodeBlob* code, outputStream* output, CodeStrings c = CodeStrings());
 214 
 215   address decode_instructions(address start, address end);
 216 
 217   void start_insn(address pc) {
 218     _cur_insn = pc;
 219     output()->bol();
 220     print_insn_labels();
 221   }
 222 
 223   void end_insn(address pc) {
 224     address pc0 = cur_insn();
 225     outputStream* st = output();
 226     if (_print_bytes && pc > pc0)
 227       print_insn_bytes(pc0, pc);
 228     if (_nm != NULL) {
 229       _nm->print_code_comment_on(st, COMMENT_COLUMN, pc0, pc);
 230       // this calls reloc_string_for which calls oop::print_value_on
 231     }
 232 
 233     // Output pc bucket ticks if we have any
 234     if (total_ticks() != 0) {
 235       address bucket_pc = FlatProfiler::bucket_start_for(pc);
 236       if (bucket_pc != NULL && bucket_pc > pc0 && bucket_pc <= pc) {
 237         int bucket_count = FlatProfiler::bucket_count_for(pc0);
 238         if (bucket_count != 0) {
 239           st->bol();
 240           st->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_ticks(), bucket_count);
 241         }
 242       }
 243     }
 244     // follow each complete insn by a nice newline
 245     st->cr();
 246   }
 247 
 248   address handle_event(const char* event, address arg);
 249 
 250   outputStream* output() { return _output; }
 251   address cur_insn() { return _cur_insn; }
 252   int total_ticks() { return _total_ticks; }
 253   void set_total_ticks(int n) { _total_ticks = n; }
 254   const char* options() { return _option_buf; }
 255 };
 256 
 257 decode_env::decode_env(CodeBlob* code, outputStream* output, CodeStrings c) {
 258   memset(this, 0, sizeof(*this)); // Beware, this zeroes bits of fields.
 259   _output = output ? output : tty;
 260   _code = code;
 261   if (code != NULL && code->is_nmethod())
 262     _nm = (nmethod*) code;
 263   _strings.copy(c);
 264 
 265   // by default, output pc but not bytes:
 266   _print_pc       = true;
 267   _print_bytes    = false;
 268   _bytes_per_line = Disassembler::pd_instruction_alignment();
 269 
 270   // parse the global option string:
 271   collect_options(Disassembler::pd_cpu_opts());
 272   collect_options(PrintAssemblyOptions);
 273 
 274   if (strstr(options(), "hsdis-")) {
 275     if (strstr(options(), "hsdis-print-raw"))
 276       _print_raw = (strstr(options(), "xml") ? 2 : 1);
 277     if (strstr(options(), "hsdis-print-pc"))
 278       _print_pc = !_print_pc;
 279     if (strstr(options(), "hsdis-print-bytes"))
 280       _print_bytes = !_print_bytes;
 281   }
 282   if (strstr(options(), "help")) {
 283     tty->print_cr("PrintAssemblyOptions help:");
 284     tty->print_cr("  hsdis-print-raw       test plugin by requesting raw output");
 285     tty->print_cr("  hsdis-print-raw-xml   test plugin by requesting raw xml");
 286     tty->print_cr("  hsdis-print-pc        turn off PC printing (on by default)");
 287     tty->print_cr("  hsdis-print-bytes     turn on instruction byte output");
 288     tty->print_cr("combined options: %s", options());
 289   }
 290 }
 291 
 292 address decode_env::handle_event(const char* event, address arg) {
 293   if (match(event, "insn")) {
 294     start_insn(arg);
 295   } else if (match(event, "/insn")) {
 296     end_insn(arg);
 297   } else if (match(event, "addr")) {
 298     if (arg != NULL) {
 299       print_address(arg);
 300       return arg;
 301     }
 302   } else if (match(event, "mach")) {
 303     static char buffer[32] = { 0, };
 304     if (strcmp(buffer, (const char*)arg) != 0 ||
 305         strlen((const char*)arg) > sizeof(buffer) - 1) {
 306       // Only print this when the mach changes
 307       strncpy(buffer, (const char*)arg, sizeof(buffer) - 1);
 308       buffer[sizeof(buffer) - 1] = '\0';
 309       output()->print_cr("[Disassembling for mach='%s']", arg);
 310     }
 311   } else if (match(event, "format bytes-per-line")) {
 312     _bytes_per_line = (int) (intptr_t) arg;
 313   } else {
 314     // ignore unrecognized markup
 315   }
 316   return NULL;
 317 }
 318 
 319 // called by the disassembler to print out jump targets and data addresses
 320 void decode_env::print_address(address adr) {
 321   outputStream* st = _output;
 322 
 323   if (adr == NULL) {
 324     st->print("NULL");
 325     return;
 326   }
 327 
 328   int small_num = (int)(intptr_t)adr;
 329   if ((intptr_t)adr == (intptr_t)small_num
 330       && -1 <= small_num && small_num <= 9) {
 331     st->print("%d", small_num);
 332     return;
 333   }
 334 
 335   if (Universe::is_fully_initialized()) {
 336     if (StubRoutines::contains(adr)) {
 337       StubCodeDesc* desc = StubCodeDesc::desc_for(adr);
 338       if (desc == NULL) {
 339         desc = StubCodeDesc::desc_for(adr + frame::pc_return_offset);
 340       }
 341       if (desc != NULL) {
 342         st->print("Stub::%s", desc->name());
 343         if (desc->begin() != adr) {
 344           st->print(INTX_FORMAT_W(+) " " PTR_FORMAT, adr - desc->begin(), p2i(adr));
 345         } else if (WizardMode) {
 346           st->print(" " PTR_FORMAT, p2i(adr));
 347         }
 348         return;
 349       }
 350       st->print("Stub::<unknown> " PTR_FORMAT, p2i(adr));
 351       return;
 352     }
 353 
 354     BarrierSet* bs = Universe::heap()->barrier_set();
 355     if (bs->is_a(BarrierSet::CardTableModRef) &&
 356         adr == (address)(barrier_set_cast<CardTableModRefBS>(bs)->byte_map_base)) {
 357       st->print("word_map_base");
 358       if (WizardMode) st->print(" " INTPTR_FORMAT, p2i(adr));
 359       return;
 360     }
 361   }
 362 
 363   if (_nm == NULL) {
 364     // Don't do this for native methods, as the function name will be printed in
 365     // nmethod::reloc_string_for().
 366     ResourceMark rm;
 367     const int buflen = 1024;
 368     char* buf = NEW_RESOURCE_ARRAY(char, buflen);
 369     int offset;
 370     if (os::dll_address_to_function_name(adr, buf, buflen, &offset)) {
 371       st->print(PTR_FORMAT " = %s",  p2i(adr), buf);
 372       if (offset != 0) {
 373         st->print("+%d", offset);
 374       }
 375       return;
 376     }
 377   }
 378 
 379   // Fall through to a simple (hexadecimal) numeral.
 380   st->print(PTR_FORMAT, p2i(adr));
 381 }
 382 
 383 void decode_env::print_insn_labels() {
 384   address p = cur_insn();
 385   outputStream* st = output();
 386   CodeBlob* cb = _code;
 387   if (cb != NULL) {
 388     cb->print_block_comment(st, p);
 389   }
 390   _strings.print_block_comment(st, (intptr_t)(p - _start));
 391   if (_print_pc) {
 392     st->print("  " PTR_FORMAT ": ", p2i(p));
 393   }
 394 }
 395 
 396 void decode_env::print_insn_bytes(address pc, address pc_limit) {
 397   outputStream* st = output();
 398   size_t incr = 1;
 399   size_t perline = _bytes_per_line;
 400   if ((size_t) Disassembler::pd_instruction_alignment() >= sizeof(int)
 401       && !((uintptr_t)pc % sizeof(int))
 402       && !((uintptr_t)pc_limit % sizeof(int))) {
 403     incr = sizeof(int);
 404     if (perline % incr)  perline += incr - (perline % incr);
 405   }
 406   while (pc < pc_limit) {
 407     // tab to the desired column:
 408     st->move_to(COMMENT_COLUMN);
 409     address pc0 = pc;
 410     address pc1 = pc + perline;
 411     if (pc1 > pc_limit)  pc1 = pc_limit;
 412     for (; pc < pc1; pc += incr) {
 413       if (pc == pc0) {
 414         st->print(BYTES_COMMENT);
 415       } else if ((uint)(pc - pc0) % sizeof(int) == 0) {
 416         st->print(" ");         // put out a space on word boundaries
 417       }
 418       if (incr == sizeof(int)) {
 419         st->print("%08x", *(int*)pc);
 420       } else {
 421         st->print("%02x", (*pc)&0xFF);
 422       }
 423     }
 424     st->cr();
 425   }
 426 }
 427 
 428 
 429 static void* event_to_env(void* env_pv, const char* event, void* arg) {
 430   decode_env* env = (decode_env*) env_pv;
 431   return env->handle_event(event, (address) arg);
 432 }
 433 
 434 ATTRIBUTE_PRINTF(2, 3)
 435 static int printf_to_env(void* env_pv, const char* format, ...) {
 436   decode_env* env = (decode_env*) env_pv;
 437   outputStream* st = env->output();
 438   size_t flen = strlen(format);
 439   const char* raw = NULL;
 440   if (flen == 0)  return 0;
 441   if (flen == 1 && format[0] == '\n') { st->bol(); return 1; }
 442   if (flen < 2 ||
 443       strchr(format, '%') == NULL) {
 444     raw = format;
 445   } else if (format[0] == '%' && format[1] == '%' &&
 446              strchr(format+2, '%') == NULL) {
 447     // happens a lot on machines with names like %foo
 448     flen--;
 449     raw = format+1;
 450   }
 451   if (raw != NULL) {
 452     st->print_raw(raw, (int) flen);
 453     return (int) flen;
 454   }
 455   va_list ap;
 456   va_start(ap, format);
 457   julong cnt0 = st->count();
 458   st->vprint(format, ap);
 459   julong cnt1 = st->count();
 460   va_end(ap);
 461   return (int)(cnt1 - cnt0);
 462 }
 463 
 464 address decode_env::decode_instructions(address start, address end) {
 465   _start = start; _end = end;
 466 
 467   assert(((((intptr_t)start | (intptr_t)end) % Disassembler::pd_instruction_alignment()) == 0), "misaligned insn addr");
 468 
 469   const int show_bytes = false; // for disassembler debugging
 470 
 471   //_version = Disassembler::pd_cpu_version();
 472 
 473   if (!Disassembler::can_decode()) {
 474     return NULL;
 475   }
 476 
 477   // decode a series of instructions and return the end of the last instruction
 478 
 479   if (_print_raw) {
 480     // Print whatever the library wants to print, w/o fancy callbacks.
 481     // This is mainly for debugging the library itself.
 482     FILE* out = stdout;
 483     FILE* xmlout = (_print_raw > 1 ? out : NULL);
 484     return use_new_version ?
 485       (address)
 486       (*Disassembler::_decode_instructions_virtual)((uintptr_t)start, (uintptr_t)end,
 487                                                     start, end - start,
 488                                                     NULL, (void*) xmlout,
 489                                                     NULL, (void*) out,
 490                                                     options(), 0/*nice new line*/)
 491       :
 492       (address)
 493       (*Disassembler::_decode_instructions)(start, end,
 494                                             NULL, (void*) xmlout,
 495                                             NULL, (void*) out,
 496                                             options());
 497   }
 498 
 499   return use_new_version ?
 500     (address)
 501     (*Disassembler::_decode_instructions_virtual)((uintptr_t)start, (uintptr_t)end,
 502                                                   start, end - start,
 503                                                   &event_to_env,  (void*) this,
 504                                                   &printf_to_env, (void*) this,
 505                                                   options(), 0/*nice new line*/)
 506     :
 507     (address)
 508     (*Disassembler::_decode_instructions)(start, end,
 509                                           &event_to_env,  (void*) this,
 510                                           &printf_to_env, (void*) this,
 511                                           options());
 512 }
 513 
 514 
 515 void Disassembler::decode(CodeBlob* cb, outputStream* st) {
 516   ttyLocker ttyl;
 517   if (!load_library())  return;
 518   if (cb->is_nmethod()) {
 519     decode((nmethod*)cb, st);
 520     return;
 521   }
 522   decode_env env(cb, st);
 523   env.output()->print_cr("----------------------------------------------------------------------");
 524   env.output()->print_cr("%s", cb->name());
 525   env.output()->print_cr(" at  [" PTR_FORMAT ", " PTR_FORMAT "]  " JLONG_FORMAT " bytes", p2i(cb->code_begin()), p2i(cb->code_end()), ((jlong)(cb->code_end() - cb->code_begin())) * sizeof(unsigned char*));
 526   env.decode_instructions(cb->code_begin(), cb->code_end());
 527 }
 528 
 529 void Disassembler::decode(address start, address end, outputStream* st, CodeStrings c) {
 530   ttyLocker ttyl;
 531   if (!load_library())  return;
 532   decode_env env(CodeCache::find_blob_unsafe(start), st, c);
 533   env.decode_instructions(start, end);
 534 }
 535 
 536 void Disassembler::decode(nmethod* nm, outputStream* st) {
 537   ttyLocker ttyl;
 538   if (!load_library())  return;
 539   decode_env env(nm, st);
 540   env.output()->print_cr("----------------------------------------------------------------------");
 541 
 542 #ifdef SHARK
 543   SharkEntry* entry = (SharkEntry *) nm->code_begin();
 544   unsigned char* p   = entry->code_start();
 545   unsigned char* end = entry->code_limit();
 546 #else
 547   unsigned char* p   = nm->code_begin();
 548   unsigned char* end = nm->code_end();
 549 #endif // SHARK
 550 
 551   nm->method()->method_holder()->name()->print_symbol_on(env.output());
 552   env.output()->print(".");
 553   nm->method()->name()->print_symbol_on(env.output());
 554   nm->method()->signature()->print_symbol_on(env.output());
 555 #if INCLUDE_JVMCI
 556   {
 557     char buffer[O_BUFLEN];
 558     char* jvmciName = nm->jvmci_installed_code_name(buffer, O_BUFLEN);
 559     if (jvmciName != NULL) {
 560       env.output()->print(" (%s)", jvmciName);
 561     }
 562   }
 563 #endif
 564   env.output()->print_cr("  [" PTR_FORMAT ", " PTR_FORMAT "]  " JLONG_FORMAT " bytes", p2i(p), p2i(end), ((jlong)(end - p)));
 565 
 566   // If there has been profiling, print the buckets.
 567   if (FlatProfiler::bucket_start_for(p) != NULL) {
 568     unsigned char* p1 = p;
 569     int total_bucket_count = 0;
 570     while (p1 < end) {
 571       unsigned char* p0 = p1;
 572       p1 += pd_instruction_alignment();
 573       address bucket_pc = FlatProfiler::bucket_start_for(p1);
 574       if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p1)
 575         total_bucket_count += FlatProfiler::bucket_count_for(p0);
 576     }
 577     env.set_total_ticks(total_bucket_count);
 578   }
 579 
 580   // Print constant table.
 581   if (nm->consts_size() > 0) {
 582     nm->print_nmethod_labels(env.output(), nm->consts_begin());
 583     int offset = 0;
 584     for (address p = nm->consts_begin(); p < nm->consts_end(); p += 4, offset += 4) {
 585       if ((offset % 8) == 0) {
 586         env.output()->print_cr("  " PTR_FORMAT " (offset: %4d): " PTR32_FORMAT "   " PTR64_FORMAT, p2i(p), offset, *((int32_t*) p), *((int64_t*) p));
 587       } else {
 588         env.output()->print_cr("  " PTR_FORMAT " (offset: %4d): " PTR32_FORMAT,                    p2i(p), offset, *((int32_t*) p));
 589       }
 590     }
 591   }
 592 
 593   env.decode_instructions(p, end);
 594 }