141 tty->print_cr("Could not load %s; %s; %s", buf,
142 ((_library != NULL)
143 ? "entry point is missing"
144 : (WizardMode || PrintMiscellaneous)
145 ? (const char*)ebuf
146 : "library not loadable"),
147 "PrintAssembly is disabled");
148 return false;
149 }
150
151 // Success.
152 tty->print_cr("Loaded disassembler from %s", buf);
153 return true;
154 }
155
156
157 class decode_env {
158 private:
159 nmethod* _nm;
160 CodeBlob* _code;
161 CodeComments _comments;
162 outputStream* _output;
163 address _start, _end;
164
165 char _option_buf[512];
166 char _print_raw;
167 bool _print_pc;
168 bool _print_bytes;
169 address _cur_insn;
170 int _total_ticks;
171 int _bytes_per_line; // arch-specific formatting option
172
173 static bool match(const char* event, const char* tag) {
174 size_t taglen = strlen(tag);
175 if (strncmp(event, tag, taglen) != 0)
176 return false;
177 char delim = event[taglen];
178 return delim == '\0' || delim == ' ' || delim == '/' || delim == '=';
179 }
180
181 void collect_options(const char* p) {
182 if (p == NULL || p[0] == '\0') return;
183 size_t opt_so_far = strlen(_option_buf);
184 if (opt_so_far + 1 + strlen(p) + 1 > sizeof(_option_buf)) return;
185 char* fillp = &_option_buf[opt_so_far];
186 if (opt_so_far > 0) *fillp++ = ',';
187 strcat(fillp, p);
188 // replace white space by commas:
189 char* q = fillp;
190 while ((q = strpbrk(q, " \t\n")) != NULL)
191 *q++ = ',';
192 // Note that multiple PrintAssemblyOptions flags accumulate with \n,
193 // which we want to be changed to a comma...
194 }
195
196 void print_insn_labels();
197 void print_insn_bytes(address pc0, address pc);
198 void print_address(address value);
199
200 public:
201 decode_env(CodeBlob* code, outputStream* output, CodeComments c = CodeComments());
202
203 address decode_instructions(address start, address end);
204
205 void start_insn(address pc) {
206 _cur_insn = pc;
207 output()->bol();
208 print_insn_labels();
209 }
210
211 void end_insn(address pc) {
212 address pc0 = cur_insn();
213 outputStream* st = output();
214 if (_print_bytes && pc > pc0)
215 print_insn_bytes(pc0, pc);
216 if (_nm != NULL) {
217 _nm->print_code_comment_on(st, COMMENT_COLUMN, pc0, pc);
218 // this calls reloc_string_for which calls oop::print_value_on
219 }
220
221 // Output pc bucket ticks if we have any
225 int bucket_count = FlatProfiler::bucket_count_for(pc0);
226 if (bucket_count != 0) {
227 st->bol();
228 st->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_ticks(), bucket_count);
229 }
230 }
231 }
232 // follow each complete insn by a nice newline
233 st->cr();
234 }
235
236 address handle_event(const char* event, address arg);
237
238 outputStream* output() { return _output; }
239 address cur_insn() { return _cur_insn; }
240 int total_ticks() { return _total_ticks; }
241 void set_total_ticks(int n) { _total_ticks = n; }
242 const char* options() { return _option_buf; }
243 };
244
245 decode_env::decode_env(CodeBlob* code, outputStream* output, CodeComments c) {
246 memset(this, 0, sizeof(*this));
247 _output = output ? output : tty;
248 _code = code;
249 if (code != NULL && code->is_nmethod())
250 _nm = (nmethod*) code;
251 _comments.assign(c);
252
253 // by default, output pc but not bytes:
254 _print_pc = true;
255 _print_bytes = false;
256 _bytes_per_line = Disassembler::pd_instruction_alignment();
257
258 // parse the global option string:
259 collect_options(Disassembler::pd_cpu_opts());
260 collect_options(PrintAssemblyOptions);
261
262 if (strstr(options(), "hsdis-")) {
263 if (strstr(options(), "hsdis-print-raw"))
264 _print_raw = (strstr(options(), "xml") ? 2 : 1);
265 if (strstr(options(), "hsdis-print-pc"))
266 _print_pc = !_print_pc;
267 if (strstr(options(), "hsdis-print-bytes"))
268 _print_bytes = !_print_bytes;
269 }
270 if (strstr(options(), "help")) {
271 tty->print_cr("PrintAssemblyOptions help:");
353 obj->print_value_on(st);
354 if (st->count() == c) {
355 // No output. (Can happen in product builds.)
356 st->print("(a %s)", obj->klass()->external_name());
357 }
358 return;
359 }
360 }
361
362 // Fall through to a simple (hexadecimal) numeral.
363 st->print(PTR_FORMAT, adr);
364 }
365
366 void decode_env::print_insn_labels() {
367 address p = cur_insn();
368 outputStream* st = output();
369 CodeBlob* cb = _code;
370 if (cb != NULL) {
371 cb->print_block_comment(st, p);
372 }
373 _comments.print_block_comment(st, (intptr_t)(p - _start));
374 if (_print_pc) {
375 st->print(" " PTR_FORMAT ": ", p);
376 }
377 }
378
379 void decode_env::print_insn_bytes(address pc, address pc_limit) {
380 outputStream* st = output();
381 size_t incr = 1;
382 size_t perline = _bytes_per_line;
383 if ((size_t) Disassembler::pd_instruction_alignment() >= sizeof(int)
384 && !((uintptr_t)pc % sizeof(int))
385 && !((uintptr_t)pc_limit % sizeof(int))) {
386 incr = sizeof(int);
387 if (perline % incr) perline += incr - (perline % incr);
388 }
389 while (pc < pc_limit) {
390 // tab to the desired column:
391 st->move_to(COMMENT_COLUMN);
392 address pc0 = pc;
393 address pc1 = pc + perline;
481 start, end - start,
482 &event_to_env, (void*) this,
483 &printf_to_env, (void*) this,
484 options(), 0/*nice new line*/)
485 :
486 (address)
487 (*Disassembler::_decode_instructions)(start, end,
488 &event_to_env, (void*) this,
489 &printf_to_env, (void*) this,
490 options());
491 }
492
493
494 void Disassembler::decode(CodeBlob* cb, outputStream* st) {
495 if (!load_library()) return;
496 decode_env env(cb, st);
497 env.output()->print_cr("Decoding CodeBlob " PTR_FORMAT, cb);
498 env.decode_instructions(cb->code_begin(), cb->code_end());
499 }
500
501 void Disassembler::decode(address start, address end, outputStream* st, CodeComments c) {
502 if (!load_library()) return;
503 decode_env env(CodeCache::find_blob_unsafe(start), st, c);
504 env.decode_instructions(start, end);
505 }
506
507 void Disassembler::decode(nmethod* nm, outputStream* st) {
508 if (!load_library()) return;
509 decode_env env(nm, st);
510 env.output()->print_cr("Decoding compiled method " PTR_FORMAT ":", nm);
511 env.output()->print_cr("Code:");
512
513 #ifdef SHARK
514 SharkEntry* entry = (SharkEntry *) nm->code_begin();
515 unsigned char* p = entry->code_start();
516 unsigned char* end = entry->code_limit();
517 #else
518 unsigned char* p = nm->code_begin();
519 unsigned char* end = nm->code_end();
520 #endif // SHARK
521
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141 tty->print_cr("Could not load %s; %s; %s", buf,
142 ((_library != NULL)
143 ? "entry point is missing"
144 : (WizardMode || PrintMiscellaneous)
145 ? (const char*)ebuf
146 : "library not loadable"),
147 "PrintAssembly is disabled");
148 return false;
149 }
150
151 // Success.
152 tty->print_cr("Loaded disassembler from %s", buf);
153 return true;
154 }
155
156
157 class decode_env {
158 private:
159 nmethod* _nm;
160 CodeBlob* _code;
161 CodeStrings _strings;
162 outputStream* _output;
163 address _start, _end;
164
165 char _option_buf[512];
166 char _print_raw;
167 bool _print_pc;
168 bool _print_bytes;
169 address _cur_insn;
170 int _total_ticks;
171 int _bytes_per_line; // arch-specific formatting option
172
173 static bool match(const char* event, const char* tag) {
174 size_t taglen = strlen(tag);
175 if (strncmp(event, tag, taglen) != 0)
176 return false;
177 char delim = event[taglen];
178 return delim == '\0' || delim == ' ' || delim == '/' || delim == '=';
179 }
180
181 void collect_options(const char* p) {
182 if (p == NULL || p[0] == '\0') return;
183 size_t opt_so_far = strlen(_option_buf);
184 if (opt_so_far + 1 + strlen(p) + 1 > sizeof(_option_buf)) return;
185 char* fillp = &_option_buf[opt_so_far];
186 if (opt_so_far > 0) *fillp++ = ',';
187 strcat(fillp, p);
188 // replace white space by commas:
189 char* q = fillp;
190 while ((q = strpbrk(q, " \t\n")) != NULL)
191 *q++ = ',';
192 // Note that multiple PrintAssemblyOptions flags accumulate with \n,
193 // which we want to be changed to a comma...
194 }
195
196 void print_insn_labels();
197 void print_insn_bytes(address pc0, address pc);
198 void print_address(address value);
199
200 public:
201 decode_env(CodeBlob* code, outputStream* output, CodeStrings c = CodeStrings());
202
203 address decode_instructions(address start, address end);
204
205 void start_insn(address pc) {
206 _cur_insn = pc;
207 output()->bol();
208 print_insn_labels();
209 }
210
211 void end_insn(address pc) {
212 address pc0 = cur_insn();
213 outputStream* st = output();
214 if (_print_bytes && pc > pc0)
215 print_insn_bytes(pc0, pc);
216 if (_nm != NULL) {
217 _nm->print_code_comment_on(st, COMMENT_COLUMN, pc0, pc);
218 // this calls reloc_string_for which calls oop::print_value_on
219 }
220
221 // Output pc bucket ticks if we have any
225 int bucket_count = FlatProfiler::bucket_count_for(pc0);
226 if (bucket_count != 0) {
227 st->bol();
228 st->print_cr("%3.1f%% [%d]", bucket_count*100.0/total_ticks(), bucket_count);
229 }
230 }
231 }
232 // follow each complete insn by a nice newline
233 st->cr();
234 }
235
236 address handle_event(const char* event, address arg);
237
238 outputStream* output() { return _output; }
239 address cur_insn() { return _cur_insn; }
240 int total_ticks() { return _total_ticks; }
241 void set_total_ticks(int n) { _total_ticks = n; }
242 const char* options() { return _option_buf; }
243 };
244
245 decode_env::decode_env(CodeBlob* code, outputStream* output, CodeStrings c) {
246 memset(this, 0, sizeof(*this));
247 _output = output ? output : tty;
248 _code = code;
249 if (code != NULL && code->is_nmethod())
250 _nm = (nmethod*) code;
251 _strings.assign(c);
252
253 // by default, output pc but not bytes:
254 _print_pc = true;
255 _print_bytes = false;
256 _bytes_per_line = Disassembler::pd_instruction_alignment();
257
258 // parse the global option string:
259 collect_options(Disassembler::pd_cpu_opts());
260 collect_options(PrintAssemblyOptions);
261
262 if (strstr(options(), "hsdis-")) {
263 if (strstr(options(), "hsdis-print-raw"))
264 _print_raw = (strstr(options(), "xml") ? 2 : 1);
265 if (strstr(options(), "hsdis-print-pc"))
266 _print_pc = !_print_pc;
267 if (strstr(options(), "hsdis-print-bytes"))
268 _print_bytes = !_print_bytes;
269 }
270 if (strstr(options(), "help")) {
271 tty->print_cr("PrintAssemblyOptions help:");
353 obj->print_value_on(st);
354 if (st->count() == c) {
355 // No output. (Can happen in product builds.)
356 st->print("(a %s)", obj->klass()->external_name());
357 }
358 return;
359 }
360 }
361
362 // Fall through to a simple (hexadecimal) numeral.
363 st->print(PTR_FORMAT, adr);
364 }
365
366 void decode_env::print_insn_labels() {
367 address p = cur_insn();
368 outputStream* st = output();
369 CodeBlob* cb = _code;
370 if (cb != NULL) {
371 cb->print_block_comment(st, p);
372 }
373 _strings.print_block_comment(st, (intptr_t)(p - _start));
374 if (_print_pc) {
375 st->print(" " PTR_FORMAT ": ", p);
376 }
377 }
378
379 void decode_env::print_insn_bytes(address pc, address pc_limit) {
380 outputStream* st = output();
381 size_t incr = 1;
382 size_t perline = _bytes_per_line;
383 if ((size_t) Disassembler::pd_instruction_alignment() >= sizeof(int)
384 && !((uintptr_t)pc % sizeof(int))
385 && !((uintptr_t)pc_limit % sizeof(int))) {
386 incr = sizeof(int);
387 if (perline % incr) perline += incr - (perline % incr);
388 }
389 while (pc < pc_limit) {
390 // tab to the desired column:
391 st->move_to(COMMENT_COLUMN);
392 address pc0 = pc;
393 address pc1 = pc + perline;
481 start, end - start,
482 &event_to_env, (void*) this,
483 &printf_to_env, (void*) this,
484 options(), 0/*nice new line*/)
485 :
486 (address)
487 (*Disassembler::_decode_instructions)(start, end,
488 &event_to_env, (void*) this,
489 &printf_to_env, (void*) this,
490 options());
491 }
492
493
494 void Disassembler::decode(CodeBlob* cb, outputStream* st) {
495 if (!load_library()) return;
496 decode_env env(cb, st);
497 env.output()->print_cr("Decoding CodeBlob " PTR_FORMAT, cb);
498 env.decode_instructions(cb->code_begin(), cb->code_end());
499 }
500
501 void Disassembler::decode(address start, address end, outputStream* st, CodeStrings c) {
502 if (!load_library()) return;
503 decode_env env(CodeCache::find_blob_unsafe(start), st, c);
504 env.decode_instructions(start, end);
505 }
506
507 void Disassembler::decode(nmethod* nm, outputStream* st) {
508 if (!load_library()) return;
509 decode_env env(nm, st);
510 env.output()->print_cr("Decoding compiled method " PTR_FORMAT ":", nm);
511 env.output()->print_cr("Code:");
512
513 #ifdef SHARK
514 SharkEntry* entry = (SharkEntry *) nm->code_begin();
515 unsigned char* p = entry->code_start();
516 unsigned char* end = entry->code_limit();
517 #else
518 unsigned char* p = nm->code_begin();
519 unsigned char* end = nm->code_end();
520 #endif // SHARK
521
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