1 /*
2 * Copyright (c) 2003, 2017, Oracle and/or its affiliates. All rights reserved.
3 * Copyright 2007, 2008, 2009, 2010, 2011 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 Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 *
24 */
25
26 #include "precompiled.hpp"
27 #include "code/scopeDesc.hpp"
28 #include "interpreter/interpreter.hpp"
29 #include "interpreter/interpreterRuntime.hpp"
30 #include "memory/resourceArea.hpp"
31 #include "oops/markOop.hpp"
32 #include "oops/method.hpp"
33 #include "oops/oop.inline.hpp"
34 #include "runtime/frame.inline.hpp"
35 #include "runtime/handles.inline.hpp"
36 #include "runtime/javaCalls.hpp"
37 #include "runtime/monitorChunk.hpp"
38 #include "runtime/signature.hpp"
39 #include "runtime/stubCodeGenerator.hpp"
40 #include "runtime/stubRoutines.hpp"
41 #include "vmreg_zero.inline.hpp"
42 #ifdef COMPILER1
43 #include "c1/c1_Runtime1.hpp"
44 #include "runtime/vframeArray.hpp"
45 #endif
46
47 #ifdef ASSERT
48 void RegisterMap::check_location_valid() {
49 ShouldNotCallThis();
50 }
51 #endif
52
53 bool frame::is_interpreted_frame() const {
54 return zeroframe()->is_interpreter_frame();
55 }
56
57 bool frame::is_fake_stub_frame() const {
58 return zeroframe()->is_fake_stub_frame();
59 }
60
61 frame frame::sender_for_entry_frame(RegisterMap *map) const {
62 assert(zeroframe()->is_entry_frame(), "wrong type of frame");
63 assert(map != NULL, "map must be set");
64 assert(!entry_frame_is_first(), "next Java fp must be non zero");
65 assert(entry_frame_call_wrapper()->anchor()->last_Java_sp() == sender_sp(),
66 "sender should be next Java frame");
67 map->clear();
68 assert(map->include_argument_oops(), "should be set by clear");
69 return frame(zeroframe()->next(), sender_sp());
70 }
71
72 frame frame::sender_for_nonentry_frame(RegisterMap *map) const {
73 assert(zeroframe()->is_interpreter_frame() ||
74 zeroframe()->is_shark_frame() ||
75 zeroframe()->is_fake_stub_frame(), "wrong type of frame");
76 return frame(zeroframe()->next(), sender_sp());
77 }
78
79 frame frame::sender(RegisterMap* map) const {
80 // Default is not to follow arguments; the various
81 // sender_for_xxx methods update this accordingly.
82 map->set_include_argument_oops(false);
83
84 if (is_entry_frame())
85 return sender_for_entry_frame(map);
86 else
87 return sender_for_nonentry_frame(map);
88 }
89
90 #ifdef CC_INTERP
91 BasicObjectLock* frame::interpreter_frame_monitor_begin() const {
92 return get_interpreterState()->monitor_base();
93 }
94
95 BasicObjectLock* frame::interpreter_frame_monitor_end() const {
96 return (BasicObjectLock*) get_interpreterState()->stack_base();
97 }
98 #endif // CC_INTERP
99
100 void frame::patch_pc(Thread* thread, address pc) {
101
102 if (pc != NULL) {
103 _cb = CodeCache::find_blob(pc);
104 SharkFrame* sharkframe = zeroframe()->as_shark_frame();
105 sharkframe->set_pc(pc);
106 _pc = pc;
107 _deopt_state = is_deoptimized;
108
109 } else {
110 // We borrow this call to set the thread pointer in the interpreter
111 // state; the hook to set up deoptimized frames isn't supplied it.
112 assert(pc == NULL, "should be");
113 get_interpreterState()->set_thread((JavaThread *) thread);
114 }
115 }
116
117 bool frame::safe_for_sender(JavaThread *thread) {
118 ShouldNotCallThis();
119 return false;
120 }
121
122 bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
123 ShouldNotCallThis();
124 return false;
125 }
126
127 BasicType frame::interpreter_frame_result(oop* oop_result,
128 jvalue* value_result) {
129 assert(is_interpreted_frame(), "interpreted frame expected");
130 Method* method = interpreter_frame_method();
131 BasicType type = method->result_type();
132 intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
133 oop obj;
134
135 switch (type) {
136 case T_VOID:
137 break;
138 case T_BOOLEAN:
139 value_result->z = *(jboolean *) tos_addr;
140 break;
141 case T_BYTE:
142 value_result->b = *(jbyte *) tos_addr;
143 break;
144 case T_CHAR:
145 value_result->c = *(jchar *) tos_addr;
146 break;
147 case T_SHORT:
148 value_result->s = *(jshort *) tos_addr;
149 break;
150 case T_INT:
151 value_result->i = *(jint *) tos_addr;
152 break;
153 case T_LONG:
154 value_result->j = *(jlong *) tos_addr;
155 break;
156 case T_FLOAT:
157 value_result->f = *(jfloat *) tos_addr;
158 break;
159 case T_DOUBLE:
160 value_result->d = *(jdouble *) tos_addr;
161 break;
162
163 case T_OBJECT:
164 case T_ARRAY:
165 if (method->is_native()) {
166 obj = get_interpreterState()->oop_temp();
167 }
168 else {
169 oop* obj_p = (oop *) tos_addr;
170 obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
171 }
172 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
173 *oop_result = obj;
174 break;
175
176 default:
177 ShouldNotReachHere();
178 }
179
180 return type;
181 }
182
183 int frame::frame_size(RegisterMap* map) const {
184 #ifdef PRODUCT
185 ShouldNotCallThis();
186 #endif // PRODUCT
187 return 0; // make javaVFrame::print_value work
188 }
189
190 intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
191 int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
192 return &interpreter_frame_tos_address()[index];
193 }
194
195 void frame::zero_print_on_error(int frame_index,
196 outputStream* st,
197 char* buf,
198 int buflen) const {
199 // Divide the buffer between the field and the value
200 buflen >>= 1;
201 char *fieldbuf = buf;
202 char *valuebuf = buf + buflen;
203
204 // Print each word of the frame
205 for (intptr_t *addr = sp(); addr <= fp(); addr++) {
206 int offset = fp() - addr;
207
208 // Fill in default values, then try and improve them
209 snprintf(fieldbuf, buflen, "word[%d]", offset);
210 snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
211 zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
212 fieldbuf[buflen - 1] = '\0';
213 valuebuf[buflen - 1] = '\0';
214
215 // Print the result
216 st->print_cr(" " PTR_FORMAT ": %-21s = %s", p2i(addr), fieldbuf, valuebuf);
217 }
218 }
219
220 void ZeroFrame::identify_word(int frame_index,
221 int offset,
222 char* fieldbuf,
223 char* valuebuf,
224 int buflen) const {
225 switch (offset) {
226 case next_frame_off:
227 strncpy(fieldbuf, "next_frame", buflen);
228 break;
229
230 case frame_type_off:
231 strncpy(fieldbuf, "frame_type", buflen);
232 if (is_entry_frame())
233 strncpy(valuebuf, "ENTRY_FRAME", buflen);
234 else if (is_interpreter_frame())
235 strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
236 else if (is_shark_frame())
237 strncpy(valuebuf, "SHARK_FRAME", buflen);
238 else if (is_fake_stub_frame())
239 strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
240 break;
241
242 default:
243 if (is_entry_frame()) {
244 as_entry_frame()->identify_word(
245 frame_index, offset, fieldbuf, valuebuf, buflen);
246 }
247 else if (is_interpreter_frame()) {
248 as_interpreter_frame()->identify_word(
249 frame_index, offset, fieldbuf, valuebuf, buflen);
250 }
251 else if (is_shark_frame()) {
252 as_shark_frame()->identify_word(
253 frame_index, offset, fieldbuf, valuebuf, buflen);
254 }
255 else if (is_fake_stub_frame()) {
256 as_fake_stub_frame()->identify_word(
257 frame_index, offset, fieldbuf, valuebuf, buflen);
258 }
259 }
260 }
261
262 void EntryFrame::identify_word(int frame_index,
263 int offset,
264 char* fieldbuf,
265 char* valuebuf,
266 int buflen) const {
267 switch (offset) {
268 case call_wrapper_off:
269 strncpy(fieldbuf, "call_wrapper", buflen);
270 break;
271
272 default:
273 snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
274 }
275 }
276
277 void InterpreterFrame::identify_word(int frame_index,
278 int offset,
279 char* fieldbuf,
280 char* valuebuf,
281 int buflen) const {
282 interpreterState istate = interpreter_state();
283 bool is_valid = istate->self_link() == istate;
284 intptr_t *addr = addr_of_word(offset);
285
286 // Fixed part
287 if (addr >= (intptr_t *) istate) {
288 const char *field = istate->name_of_field_at_address((address) addr);
289 if (field) {
290 if (is_valid && !strcmp(field, "_method")) {
291 istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
292 }
293 else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
294 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
295 (intptr_t) istate->bcp(),
296 istate->method()->bci_from(istate->bcp()));
297 }
298 snprintf(fieldbuf, buflen, "%sistate->%s",
299 field[strlen(field) - 1] == ')' ? "(": "", field);
300 }
301 else if (addr == (intptr_t *) istate) {
302 strncpy(fieldbuf, "(vtable for istate)", buflen);
303 }
304 return;
305 }
306
307 // Variable part
308 if (!is_valid)
309 return;
310
311 // JNI stuff
312 if (istate->method()->is_native() && addr < istate->stack_base()) {
313 address hA = istate->method()->signature_handler();
314 if (hA != NULL) {
315 if (hA != (address) InterpreterRuntime::slow_signature_handler) {
316 InterpreterRuntime::SignatureHandler *handler =
317 InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
318
319 intptr_t *params = istate->stack_base() - handler->argument_count();
320 if (addr >= params) {
321 int param = addr - params;
322 const char *desc = "";
323 if (param == 0)
324 desc = " (JNIEnv)";
325 else if (param == 1) {
326 if (istate->method()->is_static())
327 desc = " (mirror)";
328 else
329 desc = " (this)";
330 }
331 snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
332 return;
333 }
334
335 for (int i = 0; i < handler->argument_count(); i++) {
336 if (params[i] == (intptr_t) addr) {
337 snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
338 return;
339 }
340 }
341 }
342 }
343 return;
344 }
345
346 // Monitors and stack
347 identify_vp_word(frame_index, addr,
348 (intptr_t *) istate->monitor_base(),
349 istate->stack_base(),
350 fieldbuf, buflen);
351 }
352
353 void SharkFrame::identify_word(int frame_index,
354 int offset,
355 char* fieldbuf,
356 char* valuebuf,
357 int buflen) const {
358 // Fixed part
359 switch (offset) {
360 case pc_off:
361 strncpy(fieldbuf, "pc", buflen);
362 if (method()->is_method()) {
363 CompiledMethod *code = method()->code();
364 if (code && code->pc_desc_at(pc())) {
365 SimpleScopeDesc ssd(code, pc());
366 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
367 (intptr_t) pc(), ssd.bci());
368 }
369 }
370 return;
371
372 case unextended_sp_off:
373 strncpy(fieldbuf, "unextended_sp", buflen);
374 return;
375
376 case method_off:
377 strncpy(fieldbuf, "method", buflen);
378 if (method()->is_method()) {
379 method()->name_and_sig_as_C_string(valuebuf, buflen);
380 }
381 return;
382
383 case oop_tmp_off:
384 strncpy(fieldbuf, "oop_tmp", buflen);
385 return;
386 }
387
388 // Variable part
389 if (method()->is_method()) {
390 identify_vp_word(frame_index, addr_of_word(offset),
391 addr_of_word(header_words + 1),
392 unextended_sp() + method()->max_stack(),
393 fieldbuf, buflen);
394 }
395 }
396
397 void ZeroFrame::identify_vp_word(int frame_index,
398 intptr_t* addr,
399 intptr_t* monitor_base,
400 intptr_t* stack_base,
401 char* fieldbuf,
402 int buflen) const {
403 // Monitors
404 if (addr >= stack_base && addr < monitor_base) {
405 int monitor_size = frame::interpreter_frame_monitor_size();
406 int last_index = (monitor_base - stack_base) / monitor_size - 1;
407 int index = last_index - (addr - stack_base) / monitor_size;
408 intptr_t monitor = (intptr_t) (
409 (BasicObjectLock *) monitor_base - 1 - index);
410 intptr_t offset = (intptr_t) addr - monitor;
411
412 if (offset == BasicObjectLock::obj_offset_in_bytes())
413 snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
414 else if (offset == BasicObjectLock::lock_offset_in_bytes())
415 snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
416
417 return;
418 }
419
420 // Expression stack
421 if (addr < stack_base) {
422 snprintf(fieldbuf, buflen, "%s[%d]",
423 frame_index == 0 ? "stack_word" : "local",
424 (int) (stack_base - addr - 1));
425 return;
426 }
427 }
428
429 #ifndef PRODUCT
430
431 void frame::describe_pd(FrameValues& values, int frame_no) {
432
433 }
434
435 #endif
436
437 intptr_t *frame::initial_deoptimization_info() {
438 // unused... but returns fp() to minimize changes introduced by 7087445
439 return fp();
440 }
441
442 #ifndef PRODUCT
443 // This is a generic constructor which is only used by pns() in debug.cpp.
444 frame::frame(void* sp, void* fp, void* pc) {
445 Unimplemented();
446 }
447
448 void frame::pd_ps() {}
449 #endif