Wed, 01 Feb 2012 07:59:01 -0800
7141200: log some interesting information in ring buffers for crashes
Reviewed-by: kvn, jrose, kevinw, brutisso, twisti, jmasa
jrose@535 | 1 | /* |
trims@2708 | 2 | * Copyright (c) 2008, 2011, Oracle and/or its affiliates. All rights reserved. |
jrose@535 | 3 | * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
jrose@535 | 4 | * |
jrose@535 | 5 | * This code is free software; you can redistribute it and/or modify it |
jrose@535 | 6 | * under the terms of the GNU General Public License version 2 only, as |
jrose@535 | 7 | * published by the Free Software Foundation. |
jrose@535 | 8 | * |
jrose@535 | 9 | * This code is distributed in the hope that it will be useful, but WITHOUT |
jrose@535 | 10 | * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
jrose@535 | 11 | * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
jrose@535 | 12 | * version 2 for more details (a copy is included in the LICENSE file that |
jrose@535 | 13 | * accompanied this code). |
jrose@535 | 14 | * |
jrose@535 | 15 | * You should have received a copy of the GNU General Public License version |
jrose@535 | 16 | * 2 along with this work; if not, write to the Free Software Foundation, |
jrose@535 | 17 | * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
jrose@535 | 18 | * |
trims@1907 | 19 | * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
trims@1907 | 20 | * or visit www.oracle.com if you need additional information or have any |
trims@1907 | 21 | * questions. |
jrose@535 | 22 | * |
jrose@535 | 23 | */ |
jrose@535 | 24 | |
stefank@2314 | 25 | #include "precompiled.hpp" |
stefank@2314 | 26 | #include "classfile/javaClasses.hpp" |
stefank@2314 | 27 | #include "code/codeCache.hpp" |
stefank@2314 | 28 | #include "compiler/disassembler.hpp" |
stefank@2314 | 29 | #include "gc_interface/collectedHeap.hpp" |
stefank@2314 | 30 | #include "memory/cardTableModRefBS.hpp" |
stefank@2314 | 31 | #include "runtime/fprofiler.hpp" |
stefank@2314 | 32 | #include "runtime/handles.inline.hpp" |
stefank@2314 | 33 | #include "runtime/stubCodeGenerator.hpp" |
stefank@2314 | 34 | #include "runtime/stubRoutines.hpp" |
stefank@2314 | 35 | #ifdef TARGET_ARCH_x86 |
stefank@2314 | 36 | # include "depChecker_x86.hpp" |
stefank@2314 | 37 | #endif |
stefank@2314 | 38 | #ifdef TARGET_ARCH_sparc |
stefank@2314 | 39 | # include "depChecker_sparc.hpp" |
stefank@2314 | 40 | #endif |
stefank@2314 | 41 | #ifdef TARGET_ARCH_zero |
stefank@2314 | 42 | # include "depChecker_zero.hpp" |
stefank@2314 | 43 | #endif |
bobv@2508 | 44 | #ifdef TARGET_ARCH_arm |
bobv@2508 | 45 | # include "depChecker_arm.hpp" |
bobv@2508 | 46 | #endif |
bobv@2508 | 47 | #ifdef TARGET_ARCH_ppc |
bobv@2508 | 48 | # include "depChecker_ppc.hpp" |
bobv@2508 | 49 | #endif |
stefank@2314 | 50 | #ifdef SHARK |
stefank@2314 | 51 | #include "shark/sharkEntry.hpp" |
stefank@2314 | 52 | #endif |
jrose@535 | 53 | |
jrose@535 | 54 | void* Disassembler::_library = NULL; |
jrose@535 | 55 | bool Disassembler::_tried_to_load_library = false; |
jrose@535 | 56 | |
jrose@535 | 57 | // This routine is in the shared library: |
jrose@535 | 58 | Disassembler::decode_func Disassembler::_decode_instructions = NULL; |
jrose@535 | 59 | |
jrose@535 | 60 | static const char hsdis_library_name[] = "hsdis-"HOTSPOT_LIB_ARCH; |
jrose@535 | 61 | static const char decode_instructions_name[] = "decode_instructions"; |
jrose@535 | 62 | |
jrose@535 | 63 | #define COMMENT_COLUMN 40 LP64_ONLY(+8) /*could be an option*/ |
jrose@535 | 64 | #define BYTES_COMMENT ";..." /* funky byte display comment */ |
jrose@535 | 65 | |
jrose@535 | 66 | bool Disassembler::load_library() { |
jrose@535 | 67 | if (_decode_instructions != NULL) { |
jrose@535 | 68 | // Already succeeded. |
jrose@535 | 69 | return true; |
jrose@535 | 70 | } |
jrose@535 | 71 | if (_tried_to_load_library) { |
jrose@535 | 72 | // Do not try twice. |
jrose@535 | 73 | // To force retry in debugger: assign _tried_to_load_library=0 |
jrose@535 | 74 | return false; |
jrose@535 | 75 | } |
jrose@535 | 76 | // Try to load it. |
jrose@535 | 77 | char ebuf[1024]; |
jrose@535 | 78 | char buf[JVM_MAXPATHLEN]; |
jrose@535 | 79 | os::jvm_path(buf, sizeof(buf)); |
jrose@535 | 80 | int jvm_offset = -1; |
never@2991 | 81 | int lib_offset = -1; |
jrose@535 | 82 | { |
jrose@535 | 83 | // Match "jvm[^/]*" in jvm_path. |
jrose@535 | 84 | const char* base = buf; |
jrose@535 | 85 | const char* p = strrchr(buf, '/'); |
never@2991 | 86 | if (p != NULL) lib_offset = p - base + 1; |
jrose@535 | 87 | p = strstr(p ? p : base, "jvm"); |
jrose@535 | 88 | if (p != NULL) jvm_offset = p - base; |
jrose@535 | 89 | } |
never@2991 | 90 | // Find the disassembler shared library. |
never@2991 | 91 | // Search for several paths derived from libjvm, in this order: |
never@2991 | 92 | // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so (for compatibility) |
never@2991 | 93 | // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so |
never@2991 | 94 | // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so |
never@2991 | 95 | // 4. hsdis-<arch>.so (using LD_LIBRARY_PATH) |
jrose@535 | 96 | if (jvm_offset >= 0) { |
never@2991 | 97 | // 1. <home>/jre/lib/<arch>/<vm>/libhsdis-<arch>.so |
jrose@535 | 98 | strcpy(&buf[jvm_offset], hsdis_library_name); |
jrose@535 | 99 | strcat(&buf[jvm_offset], os::dll_file_extension()); |
ikrylov@2322 | 100 | _library = os::dll_load(buf, ebuf, sizeof ebuf); |
never@2991 | 101 | if (_library == NULL) { |
never@2991 | 102 | // 2. <home>/jre/lib/<arch>/<vm>/hsdis-<arch>.so |
never@2991 | 103 | strcpy(&buf[lib_offset], hsdis_library_name); |
never@2991 | 104 | strcat(&buf[lib_offset], os::dll_file_extension()); |
never@2991 | 105 | _library = os::dll_load(buf, ebuf, sizeof ebuf); |
never@2991 | 106 | } |
never@2991 | 107 | if (_library == NULL) { |
never@2991 | 108 | // 3. <home>/jre/lib/<arch>/hsdis-<arch>.so |
never@2991 | 109 | buf[lib_offset - 1] = '\0'; |
never@2991 | 110 | const char* p = strrchr(buf, '/'); |
never@2991 | 111 | if (p != NULL) { |
never@2991 | 112 | lib_offset = p - buf + 1; |
never@2991 | 113 | strcpy(&buf[lib_offset], hsdis_library_name); |
never@2991 | 114 | strcat(&buf[lib_offset], os::dll_file_extension()); |
never@2991 | 115 | _library = os::dll_load(buf, ebuf, sizeof ebuf); |
never@2991 | 116 | } |
never@2991 | 117 | } |
jrose@535 | 118 | } |
jrose@535 | 119 | if (_library == NULL) { |
never@2991 | 120 | // 4. hsdis-<arch>.so (using LD_LIBRARY_PATH) |
jrose@535 | 121 | strcpy(&buf[0], hsdis_library_name); |
jrose@535 | 122 | strcat(&buf[0], os::dll_file_extension()); |
ikrylov@2322 | 123 | _library = os::dll_load(buf, ebuf, sizeof ebuf); |
jrose@535 | 124 | } |
jrose@535 | 125 | if (_library != NULL) { |
jrose@535 | 126 | _decode_instructions = CAST_TO_FN_PTR(Disassembler::decode_func, |
ikrylov@2322 | 127 | os::dll_lookup(_library, decode_instructions_name)); |
jrose@535 | 128 | } |
jrose@535 | 129 | _tried_to_load_library = true; |
jrose@535 | 130 | if (_decode_instructions == NULL) { |
jrose@535 | 131 | tty->print_cr("Could not load %s; %s; %s", buf, |
jrose@535 | 132 | ((_library != NULL) |
jrose@535 | 133 | ? "entry point is missing" |
jrose@535 | 134 | : (WizardMode || PrintMiscellaneous) |
jrose@535 | 135 | ? (const char*)ebuf |
jrose@535 | 136 | : "library not loadable"), |
jrose@535 | 137 | "PrintAssembly is disabled"); |
jrose@535 | 138 | return false; |
jrose@535 | 139 | } |
jrose@535 | 140 | |
jrose@535 | 141 | // Success. |
jrose@535 | 142 | tty->print_cr("Loaded disassembler from %s", buf); |
jrose@535 | 143 | return true; |
jrose@535 | 144 | } |
jrose@535 | 145 | |
jrose@535 | 146 | |
jrose@535 | 147 | class decode_env { |
jrose@535 | 148 | private: |
jrose@535 | 149 | nmethod* _nm; |
jrose@535 | 150 | CodeBlob* _code; |
jrose@535 | 151 | outputStream* _output; |
jrose@535 | 152 | address _start, _end; |
jrose@535 | 153 | |
jrose@535 | 154 | char _option_buf[512]; |
jrose@535 | 155 | char _print_raw; |
jrose@535 | 156 | bool _print_pc; |
jrose@535 | 157 | bool _print_bytes; |
jrose@535 | 158 | address _cur_insn; |
jrose@535 | 159 | int _total_ticks; |
jrose@535 | 160 | int _bytes_per_line; // arch-specific formatting option |
jrose@535 | 161 | |
jrose@535 | 162 | static bool match(const char* event, const char* tag) { |
jrose@535 | 163 | size_t taglen = strlen(tag); |
jrose@535 | 164 | if (strncmp(event, tag, taglen) != 0) |
jrose@535 | 165 | return false; |
jrose@535 | 166 | char delim = event[taglen]; |
jrose@535 | 167 | return delim == '\0' || delim == ' ' || delim == '/' || delim == '='; |
jrose@535 | 168 | } |
jrose@535 | 169 | |
jrose@535 | 170 | void collect_options(const char* p) { |
jrose@535 | 171 | if (p == NULL || p[0] == '\0') return; |
jrose@535 | 172 | size_t opt_so_far = strlen(_option_buf); |
jrose@535 | 173 | if (opt_so_far + 1 + strlen(p) + 1 > sizeof(_option_buf)) return; |
jrose@535 | 174 | char* fillp = &_option_buf[opt_so_far]; |
jrose@535 | 175 | if (opt_so_far > 0) *fillp++ = ','; |
jrose@535 | 176 | strcat(fillp, p); |
jrose@535 | 177 | // replace white space by commas: |
jrose@535 | 178 | char* q = fillp; |
jrose@535 | 179 | while ((q = strpbrk(q, " \t\n")) != NULL) |
jrose@535 | 180 | *q++ = ','; |
jrose@535 | 181 | // Note that multiple PrintAssemblyOptions flags accumulate with \n, |
jrose@535 | 182 | // which we want to be changed to a comma... |
jrose@535 | 183 | } |
jrose@535 | 184 | |
jrose@535 | 185 | void print_insn_labels(); |
jrose@535 | 186 | void print_insn_bytes(address pc0, address pc); |
jrose@535 | 187 | void print_address(address value); |
jrose@535 | 188 | |
jrose@535 | 189 | public: |
jrose@535 | 190 | decode_env(CodeBlob* code, outputStream* output); |
jrose@535 | 191 | |
jrose@535 | 192 | address decode_instructions(address start, address end); |
jrose@535 | 193 | |
jrose@535 | 194 | void start_insn(address pc) { |
jrose@535 | 195 | _cur_insn = pc; |
jrose@535 | 196 | output()->bol(); |
jrose@535 | 197 | print_insn_labels(); |
jrose@535 | 198 | } |
jrose@535 | 199 | |
jrose@535 | 200 | void end_insn(address pc) { |
jrose@535 | 201 | address pc0 = cur_insn(); |
jrose@535 | 202 | outputStream* st = output(); |
jrose@535 | 203 | if (_print_bytes && pc > pc0) |
jrose@535 | 204 | print_insn_bytes(pc0, pc); |
jrose@1590 | 205 | if (_nm != NULL) { |
jrose@535 | 206 | _nm->print_code_comment_on(st, COMMENT_COLUMN, pc0, pc); |
jrose@1590 | 207 | // this calls reloc_string_for which calls oop::print_value_on |
jrose@1590 | 208 | } |
jrose@535 | 209 | |
jrose@535 | 210 | // Output pc bucket ticks if we have any |
jrose@535 | 211 | if (total_ticks() != 0) { |
jrose@535 | 212 | address bucket_pc = FlatProfiler::bucket_start_for(pc); |
jrose@535 | 213 | if (bucket_pc != NULL && bucket_pc > pc0 && bucket_pc <= pc) { |
jrose@535 | 214 | int bucket_count = FlatProfiler::bucket_count_for(pc0); |
jrose@535 | 215 | if (bucket_count != 0) { |
jrose@535 | 216 | st->bol(); |
jrose@535 | 217 | st->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_ticks(), bucket_count); |
jrose@535 | 218 | } |
jrose@535 | 219 | } |
jrose@535 | 220 | } |
jrose@535 | 221 | } |
jrose@535 | 222 | |
jrose@535 | 223 | address handle_event(const char* event, address arg); |
jrose@535 | 224 | |
jrose@535 | 225 | outputStream* output() { return _output; } |
jrose@535 | 226 | address cur_insn() { return _cur_insn; } |
jrose@535 | 227 | int total_ticks() { return _total_ticks; } |
jrose@535 | 228 | void set_total_ticks(int n) { _total_ticks = n; } |
jrose@535 | 229 | const char* options() { return _option_buf; } |
jrose@535 | 230 | }; |
jrose@535 | 231 | |
jrose@535 | 232 | decode_env::decode_env(CodeBlob* code, outputStream* output) { |
jrose@535 | 233 | memset(this, 0, sizeof(*this)); |
jrose@535 | 234 | _output = output ? output : tty; |
jrose@535 | 235 | _code = code; |
jrose@535 | 236 | if (code != NULL && code->is_nmethod()) |
jrose@535 | 237 | _nm = (nmethod*) code; |
jrose@535 | 238 | |
jrose@535 | 239 | // by default, output pc but not bytes: |
jrose@535 | 240 | _print_pc = true; |
jrose@535 | 241 | _print_bytes = false; |
jrose@535 | 242 | _bytes_per_line = Disassembler::pd_instruction_alignment(); |
jrose@535 | 243 | |
jrose@535 | 244 | // parse the global option string: |
jrose@535 | 245 | collect_options(Disassembler::pd_cpu_opts()); |
jrose@535 | 246 | collect_options(PrintAssemblyOptions); |
jrose@535 | 247 | |
jrose@535 | 248 | if (strstr(options(), "hsdis-")) { |
jrose@535 | 249 | if (strstr(options(), "hsdis-print-raw")) |
jrose@535 | 250 | _print_raw = (strstr(options(), "xml") ? 2 : 1); |
jrose@535 | 251 | if (strstr(options(), "hsdis-print-pc")) |
jrose@535 | 252 | _print_pc = !_print_pc; |
jrose@535 | 253 | if (strstr(options(), "hsdis-print-bytes")) |
jrose@535 | 254 | _print_bytes = !_print_bytes; |
jrose@535 | 255 | } |
jrose@535 | 256 | if (strstr(options(), "help")) { |
jrose@535 | 257 | tty->print_cr("PrintAssemblyOptions help:"); |
jrose@535 | 258 | tty->print_cr(" hsdis-print-raw test plugin by requesting raw output"); |
jrose@535 | 259 | tty->print_cr(" hsdis-print-raw-xml test plugin by requesting raw xml"); |
jrose@535 | 260 | tty->print_cr(" hsdis-print-pc turn off PC printing (on by default)"); |
jrose@535 | 261 | tty->print_cr(" hsdis-print-bytes turn on instruction byte output"); |
jrose@535 | 262 | tty->print_cr("combined options: %s", options()); |
jrose@535 | 263 | } |
jrose@535 | 264 | } |
jrose@535 | 265 | |
jrose@535 | 266 | address decode_env::handle_event(const char* event, address arg) { |
jrose@535 | 267 | if (match(event, "insn")) { |
jrose@535 | 268 | start_insn(arg); |
jrose@535 | 269 | } else if (match(event, "/insn")) { |
jrose@535 | 270 | end_insn(arg); |
jrose@535 | 271 | } else if (match(event, "addr")) { |
jrose@535 | 272 | if (arg != NULL) { |
jrose@535 | 273 | print_address(arg); |
jrose@535 | 274 | return arg; |
jrose@535 | 275 | } |
jrose@535 | 276 | } else if (match(event, "mach")) { |
never@2991 | 277 | static char buffer[32] = { 0, }; |
never@2991 | 278 | if (strcmp(buffer, (const char*)arg) != 0 || |
never@2991 | 279 | strlen((const char*)arg) > sizeof(buffer) - 1) { |
never@2991 | 280 | // Only print this when the mach changes |
never@2991 | 281 | strncpy(buffer, (const char*)arg, sizeof(buffer) - 1); |
never@2991 | 282 | output()->print_cr("[Disassembling for mach='%s']", arg); |
never@2991 | 283 | } |
jrose@535 | 284 | } else if (match(event, "format bytes-per-line")) { |
jrose@535 | 285 | _bytes_per_line = (int) (intptr_t) arg; |
jrose@535 | 286 | } else { |
jrose@535 | 287 | // ignore unrecognized markup |
jrose@535 | 288 | } |
jrose@535 | 289 | return NULL; |
jrose@535 | 290 | } |
jrose@535 | 291 | |
jrose@535 | 292 | // called by the disassembler to print out jump targets and data addresses |
jrose@535 | 293 | void decode_env::print_address(address adr) { |
jrose@535 | 294 | outputStream* st = _output; |
jrose@535 | 295 | |
jrose@535 | 296 | if (adr == NULL) { |
jrose@535 | 297 | st->print("NULL"); |
jrose@535 | 298 | return; |
jrose@535 | 299 | } |
jrose@535 | 300 | |
jrose@535 | 301 | int small_num = (int)(intptr_t)adr; |
jrose@535 | 302 | if ((intptr_t)adr == (intptr_t)small_num |
jrose@535 | 303 | && -1 <= small_num && small_num <= 9) { |
jrose@535 | 304 | st->print("%d", small_num); |
jrose@535 | 305 | return; |
jrose@535 | 306 | } |
jrose@535 | 307 | |
jrose@535 | 308 | if (Universe::is_fully_initialized()) { |
jrose@535 | 309 | if (StubRoutines::contains(adr)) { |
jrose@535 | 310 | StubCodeDesc* desc = StubCodeDesc::desc_for(adr); |
jrose@535 | 311 | if (desc == NULL) |
jrose@535 | 312 | desc = StubCodeDesc::desc_for(adr + frame::pc_return_offset); |
jrose@535 | 313 | if (desc != NULL) { |
jrose@535 | 314 | st->print("Stub::%s", desc->name()); |
jrose@535 | 315 | if (desc->begin() != adr) |
jrose@535 | 316 | st->print("%+d 0x%p",adr - desc->begin(), adr); |
never@2895 | 317 | else if (WizardMode) st->print(" " PTR_FORMAT, adr); |
jrose@535 | 318 | return; |
jrose@535 | 319 | } |
never@2895 | 320 | st->print("Stub::<unknown> " PTR_FORMAT, adr); |
jrose@535 | 321 | return; |
jrose@535 | 322 | } |
jrose@535 | 323 | |
jrose@535 | 324 | BarrierSet* bs = Universe::heap()->barrier_set(); |
jrose@535 | 325 | if (bs->kind() == BarrierSet::CardTableModRef && |
jrose@535 | 326 | adr == (address)((CardTableModRefBS*)(bs))->byte_map_base) { |
jrose@535 | 327 | st->print("word_map_base"); |
jrose@535 | 328 | if (WizardMode) st->print(" " INTPTR_FORMAT, (intptr_t)adr); |
jrose@535 | 329 | return; |
jrose@535 | 330 | } |
jrose@535 | 331 | |
jrose@535 | 332 | oop obj; |
jrose@535 | 333 | if (_nm != NULL |
jrose@535 | 334 | && (obj = _nm->embeddedOop_at(cur_insn())) != NULL |
jrose@1590 | 335 | && (address) obj == adr |
jrose@1590 | 336 | && Universe::heap()->is_in(obj) |
jrose@1590 | 337 | && Universe::heap()->is_in(obj->klass())) { |
jrose@1590 | 338 | julong c = st->count(); |
jrose@535 | 339 | obj->print_value_on(st); |
jrose@1590 | 340 | if (st->count() == c) { |
jrose@1590 | 341 | // No output. (Can happen in product builds.) |
jrose@1590 | 342 | st->print("(a %s)", Klass::cast(obj->klass())->external_name()); |
jrose@1590 | 343 | } |
jrose@535 | 344 | return; |
jrose@535 | 345 | } |
jrose@535 | 346 | } |
jrose@535 | 347 | |
never@2895 | 348 | // Fall through to a simple (hexadecimal) numeral. |
never@2895 | 349 | st->print(PTR_FORMAT, adr); |
jrose@535 | 350 | } |
jrose@535 | 351 | |
jrose@535 | 352 | void decode_env::print_insn_labels() { |
jrose@535 | 353 | address p = cur_insn(); |
jrose@535 | 354 | outputStream* st = output(); |
jrose@535 | 355 | CodeBlob* cb = _code; |
jrose@535 | 356 | if (cb != NULL) { |
jrose@1590 | 357 | cb->print_block_comment(st, p); |
jrose@535 | 358 | } |
jrose@535 | 359 | if (_print_pc) { |
never@2895 | 360 | st->print(" " PTR_FORMAT ": ", p); |
jrose@535 | 361 | } |
jrose@535 | 362 | } |
jrose@535 | 363 | |
jrose@535 | 364 | void decode_env::print_insn_bytes(address pc, address pc_limit) { |
jrose@535 | 365 | outputStream* st = output(); |
jrose@535 | 366 | size_t incr = 1; |
jrose@535 | 367 | size_t perline = _bytes_per_line; |
jrose@535 | 368 | if ((size_t) Disassembler::pd_instruction_alignment() >= sizeof(int) |
jrose@535 | 369 | && !((uintptr_t)pc % sizeof(int)) |
jrose@535 | 370 | && !((uintptr_t)pc_limit % sizeof(int))) { |
jrose@535 | 371 | incr = sizeof(int); |
jrose@535 | 372 | if (perline % incr) perline += incr - (perline % incr); |
jrose@535 | 373 | } |
jrose@535 | 374 | while (pc < pc_limit) { |
jrose@535 | 375 | // tab to the desired column: |
jrose@535 | 376 | st->move_to(COMMENT_COLUMN); |
jrose@535 | 377 | address pc0 = pc; |
jrose@535 | 378 | address pc1 = pc + perline; |
jrose@535 | 379 | if (pc1 > pc_limit) pc1 = pc_limit; |
jrose@535 | 380 | for (; pc < pc1; pc += incr) { |
jrose@535 | 381 | if (pc == pc0) |
jrose@535 | 382 | st->print(BYTES_COMMENT); |
jrose@535 | 383 | else if ((uint)(pc - pc0) % sizeof(int) == 0) |
jrose@535 | 384 | st->print(" "); // put out a space on word boundaries |
jrose@535 | 385 | if (incr == sizeof(int)) |
jrose@535 | 386 | st->print("%08lx", *(int*)pc); |
jrose@535 | 387 | else st->print("%02x", (*pc)&0xFF); |
jrose@535 | 388 | } |
jrose@535 | 389 | st->cr(); |
jrose@535 | 390 | } |
jrose@535 | 391 | } |
jrose@535 | 392 | |
jrose@535 | 393 | |
jrose@535 | 394 | static void* event_to_env(void* env_pv, const char* event, void* arg) { |
jrose@535 | 395 | decode_env* env = (decode_env*) env_pv; |
jrose@535 | 396 | return env->handle_event(event, (address) arg); |
jrose@535 | 397 | } |
jrose@535 | 398 | |
jrose@535 | 399 | static int printf_to_env(void* env_pv, const char* format, ...) { |
jrose@535 | 400 | decode_env* env = (decode_env*) env_pv; |
jrose@535 | 401 | outputStream* st = env->output(); |
jrose@535 | 402 | size_t flen = strlen(format); |
jrose@535 | 403 | const char* raw = NULL; |
jrose@535 | 404 | if (flen == 0) return 0; |
jrose@535 | 405 | if (flen == 1 && format[0] == '\n') { st->bol(); return 1; } |
jrose@535 | 406 | if (flen < 2 || |
jrose@535 | 407 | strchr(format, '%') == NULL) { |
jrose@535 | 408 | raw = format; |
jrose@535 | 409 | } else if (format[0] == '%' && format[1] == '%' && |
jrose@535 | 410 | strchr(format+2, '%') == NULL) { |
jrose@535 | 411 | // happens a lot on machines with names like %foo |
jrose@535 | 412 | flen--; |
jrose@535 | 413 | raw = format+1; |
jrose@535 | 414 | } |
jrose@535 | 415 | if (raw != NULL) { |
jrose@535 | 416 | st->print_raw(raw, (int) flen); |
jrose@535 | 417 | return (int) flen; |
jrose@535 | 418 | } |
jrose@535 | 419 | va_list ap; |
jrose@535 | 420 | va_start(ap, format); |
jrose@535 | 421 | julong cnt0 = st->count(); |
jrose@535 | 422 | st->vprint(format, ap); |
jrose@535 | 423 | julong cnt1 = st->count(); |
jrose@535 | 424 | va_end(ap); |
jrose@535 | 425 | return (int)(cnt1 - cnt0); |
jrose@535 | 426 | } |
jrose@535 | 427 | |
jrose@535 | 428 | address decode_env::decode_instructions(address start, address end) { |
jrose@535 | 429 | _start = start; _end = end; |
jrose@535 | 430 | |
bobv@2036 | 431 | assert(((((intptr_t)start | (intptr_t)end) % Disassembler::pd_instruction_alignment()) == 0), "misaligned insn addr"); |
jrose@535 | 432 | |
jrose@535 | 433 | const int show_bytes = false; // for disassembler debugging |
jrose@535 | 434 | |
jrose@535 | 435 | //_version = Disassembler::pd_cpu_version(); |
jrose@535 | 436 | |
jrose@535 | 437 | if (!Disassembler::can_decode()) { |
jrose@535 | 438 | return NULL; |
jrose@535 | 439 | } |
jrose@535 | 440 | |
jrose@535 | 441 | // decode a series of instructions and return the end of the last instruction |
jrose@535 | 442 | |
jrose@535 | 443 | if (_print_raw) { |
jrose@535 | 444 | // Print whatever the library wants to print, w/o fancy callbacks. |
jrose@535 | 445 | // This is mainly for debugging the library itself. |
jrose@535 | 446 | FILE* out = stdout; |
jrose@535 | 447 | FILE* xmlout = (_print_raw > 1 ? out : NULL); |
jrose@535 | 448 | return (address) |
jrose@535 | 449 | (*Disassembler::_decode_instructions)(start, end, |
jrose@535 | 450 | NULL, (void*) xmlout, |
jrose@535 | 451 | NULL, (void*) out, |
jrose@535 | 452 | options()); |
jrose@535 | 453 | } |
jrose@535 | 454 | |
jrose@535 | 455 | return (address) |
jrose@535 | 456 | (*Disassembler::_decode_instructions)(start, end, |
jrose@535 | 457 | &event_to_env, (void*) this, |
jrose@535 | 458 | &printf_to_env, (void*) this, |
jrose@535 | 459 | options()); |
jrose@535 | 460 | } |
jrose@535 | 461 | |
jrose@535 | 462 | |
jrose@535 | 463 | void Disassembler::decode(CodeBlob* cb, outputStream* st) { |
jrose@535 | 464 | if (!load_library()) return; |
jrose@535 | 465 | decode_env env(cb, st); |
never@2895 | 466 | env.output()->print_cr("Decoding CodeBlob " PTR_FORMAT, cb); |
twisti@2103 | 467 | env.decode_instructions(cb->code_begin(), cb->code_end()); |
jrose@535 | 468 | } |
jrose@535 | 469 | |
jrose@535 | 470 | |
jrose@535 | 471 | void Disassembler::decode(address start, address end, outputStream* st) { |
jrose@535 | 472 | if (!load_library()) return; |
jrose@535 | 473 | decode_env env(CodeCache::find_blob_unsafe(start), st); |
jrose@535 | 474 | env.decode_instructions(start, end); |
jrose@535 | 475 | } |
jrose@535 | 476 | |
jrose@535 | 477 | void Disassembler::decode(nmethod* nm, outputStream* st) { |
jrose@535 | 478 | if (!load_library()) return; |
jrose@535 | 479 | decode_env env(nm, st); |
never@2895 | 480 | env.output()->print_cr("Decoding compiled method " PTR_FORMAT ":", nm); |
jrose@535 | 481 | env.output()->print_cr("Code:"); |
jrose@535 | 482 | |
twisti@2047 | 483 | #ifdef SHARK |
twisti@2103 | 484 | SharkEntry* entry = (SharkEntry *) nm->code_begin(); |
twisti@2103 | 485 | unsigned char* p = entry->code_start(); |
twisti@2047 | 486 | unsigned char* end = entry->code_limit(); |
twisti@2047 | 487 | #else |
twisti@2103 | 488 | unsigned char* p = nm->code_begin(); |
twisti@2103 | 489 | unsigned char* end = nm->code_end(); |
twisti@2047 | 490 | #endif // SHARK |
jrose@535 | 491 | |
jrose@535 | 492 | // If there has been profiling, print the buckets. |
jrose@535 | 493 | if (FlatProfiler::bucket_start_for(p) != NULL) { |
jrose@535 | 494 | unsigned char* p1 = p; |
jrose@535 | 495 | int total_bucket_count = 0; |
jrose@535 | 496 | while (p1 < end) { |
jrose@535 | 497 | unsigned char* p0 = p1; |
jrose@535 | 498 | p1 += pd_instruction_alignment(); |
jrose@535 | 499 | address bucket_pc = FlatProfiler::bucket_start_for(p1); |
jrose@535 | 500 | if (bucket_pc != NULL && bucket_pc > p0 && bucket_pc <= p1) |
jrose@535 | 501 | total_bucket_count += FlatProfiler::bucket_count_for(p0); |
jrose@535 | 502 | } |
jrose@535 | 503 | env.set_total_ticks(total_bucket_count); |
jrose@535 | 504 | } |
jrose@535 | 505 | |
twisti@2350 | 506 | // Print constant table. |
twisti@2350 | 507 | if (nm->consts_size() > 0) { |
twisti@2350 | 508 | nm->print_nmethod_labels(env.output(), nm->consts_begin()); |
twisti@2350 | 509 | int offset = 0; |
twisti@2350 | 510 | for (address p = nm->consts_begin(); p < nm->consts_end(); p += 4, offset += 4) { |
twisti@2350 | 511 | if ((offset % 8) == 0) { |
never@2895 | 512 | env.output()->print_cr(" " PTR_FORMAT " (offset: %4d): " PTR32_FORMAT " " PTR64_FORMAT, p, offset, *((int32_t*) p), *((int64_t*) p)); |
twisti@2350 | 513 | } else { |
never@2895 | 514 | env.output()->print_cr(" " PTR_FORMAT " (offset: %4d): " PTR32_FORMAT, p, offset, *((int32_t*) p)); |
twisti@2350 | 515 | } |
twisti@2350 | 516 | } |
twisti@2350 | 517 | } |
twisti@2350 | 518 | |
jrose@535 | 519 | env.decode_instructions(p, end); |
jrose@535 | 520 | } |