1 /*
2 * Copyright (c) 2003, 2013, 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 void frame::pd_gc_epilog() {
123 }
124
125 bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
126 ShouldNotCallThis();
127 return false;
128 }
129
130 BasicType frame::interpreter_frame_result(oop* oop_result,
131 jvalue* value_result) {
132 assert(is_interpreted_frame(), "interpreted frame expected");
133 Method* method = interpreter_frame_method();
134 BasicType type = method->result_type();
135 intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
136 oop obj;
137
138 switch (type) {
139 case T_VOID:
140 break;
141 case T_BOOLEAN:
142 value_result->z = *(jboolean *) tos_addr;
143 break;
144 case T_BYTE:
145 value_result->b = *(jbyte *) tos_addr;
146 break;
147 case T_CHAR:
148 value_result->c = *(jchar *) tos_addr;
149 break;
150 case T_SHORT:
151 value_result->s = *(jshort *) tos_addr;
152 break;
153 case T_INT:
154 value_result->i = *(jint *) tos_addr;
155 break;
156 case T_LONG:
157 value_result->j = *(jlong *) tos_addr;
158 break;
159 case T_FLOAT:
160 value_result->f = *(jfloat *) tos_addr;
161 break;
162 case T_DOUBLE:
163 value_result->d = *(jdouble *) tos_addr;
164 break;
165
166 case T_OBJECT:
167 case T_ARRAY:
168 if (method->is_native()) {
169 obj = get_interpreterState()->oop_temp();
170 }
171 else {
172 oop* obj_p = (oop *) tos_addr;
173 obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
174 }
175 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
176 *oop_result = obj;
177 break;
178
179 default:
180 ShouldNotReachHere();
181 }
182
183 return type;
184 }
185
186 int frame::frame_size(RegisterMap* map) const {
187 #ifdef PRODUCT
188 ShouldNotCallThis();
189 #endif // PRODUCT
190 return 0; // make javaVFrame::print_value work
191 }
192
193 intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
194 int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
195 return &interpreter_frame_tos_address()[index];
196 }
197
198 void frame::zero_print_on_error(int frame_index,
199 outputStream* st,
200 char* buf,
201 int buflen) const {
202 // Divide the buffer between the field and the value
203 buflen >>= 1;
204 char *fieldbuf = buf;
205 char *valuebuf = buf + buflen;
206
207 // Print each word of the frame
208 for (intptr_t *addr = sp(); addr <= fp(); addr++) {
209 int offset = fp() - addr;
210
211 // Fill in default values, then try and improve them
212 snprintf(fieldbuf, buflen, "word[%d]", offset);
213 snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
214 zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
215 fieldbuf[buflen - 1] = '\0';
216 valuebuf[buflen - 1] = '\0';
217
218 // Print the result
219 st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf);
220 }
221 }
222
223 void ZeroFrame::identify_word(int frame_index,
224 int offset,
225 char* fieldbuf,
226 char* valuebuf,
227 int buflen) const {
228 switch (offset) {
229 case next_frame_off:
230 strncpy(fieldbuf, "next_frame", buflen);
231 break;
232
233 case frame_type_off:
234 strncpy(fieldbuf, "frame_type", buflen);
235 if (is_entry_frame())
236 strncpy(valuebuf, "ENTRY_FRAME", buflen);
237 else if (is_interpreter_frame())
238 strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
239 else if (is_shark_frame())
240 strncpy(valuebuf, "SHARK_FRAME", buflen);
241 else if (is_fake_stub_frame())
242 strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
243 break;
244
245 default:
246 if (is_entry_frame()) {
247 as_entry_frame()->identify_word(
248 frame_index, offset, fieldbuf, valuebuf, buflen);
249 }
250 else if (is_interpreter_frame()) {
251 as_interpreter_frame()->identify_word(
252 frame_index, offset, fieldbuf, valuebuf, buflen);
253 }
254 else if (is_shark_frame()) {
255 as_shark_frame()->identify_word(
256 frame_index, offset, fieldbuf, valuebuf, buflen);
257 }
258 else if (is_fake_stub_frame()) {
259 as_fake_stub_frame()->identify_word(
260 frame_index, offset, fieldbuf, valuebuf, buflen);
261 }
262 }
263 }
264
265 void EntryFrame::identify_word(int frame_index,
266 int offset,
267 char* fieldbuf,
268 char* valuebuf,
269 int buflen) const {
270 switch (offset) {
271 case call_wrapper_off:
272 strncpy(fieldbuf, "call_wrapper", buflen);
273 break;
274
275 default:
276 snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
277 }
278 }
279
280 void InterpreterFrame::identify_word(int frame_index,
281 int offset,
282 char* fieldbuf,
283 char* valuebuf,
284 int buflen) const {
285 interpreterState istate = interpreter_state();
286 bool is_valid = istate->self_link() == istate;
287 intptr_t *addr = addr_of_word(offset);
288
289 // Fixed part
290 if (addr >= (intptr_t *) istate) {
291 const char *field = istate->name_of_field_at_address((address) addr);
292 if (field) {
293 if (is_valid && !strcmp(field, "_method")) {
294 istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
295 }
296 else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
297 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
298 (intptr_t) istate->bcp(),
299 istate->method()->bci_from(istate->bcp()));
300 }
301 snprintf(fieldbuf, buflen, "%sistate->%s",
302 field[strlen(field) - 1] == ')' ? "(": "", field);
303 }
304 else if (addr == (intptr_t *) istate) {
305 strncpy(fieldbuf, "(vtable for istate)", buflen);
306 }
307 return;
308 }
309
310 // Variable part
311 if (!is_valid)
312 return;
313
314 // JNI stuff
315 if (istate->method()->is_native() && addr < istate->stack_base()) {
316 address hA = istate->method()->signature_handler();
317 if (hA != NULL) {
318 if (hA != (address) InterpreterRuntime::slow_signature_handler) {
319 InterpreterRuntime::SignatureHandler *handler =
320 InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
321
322 intptr_t *params = istate->stack_base() - handler->argument_count();
323 if (addr >= params) {
324 int param = addr - params;
325 const char *desc = "";
326 if (param == 0)
327 desc = " (JNIEnv)";
328 else if (param == 1) {
329 if (istate->method()->is_static())
330 desc = " (mirror)";
331 else
332 desc = " (this)";
333 }
334 snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
335 return;
336 }
337
338 for (int i = 0; i < handler->argument_count(); i++) {
339 if (params[i] == (intptr_t) addr) {
340 snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
341 return;
342 }
343 }
344 }
345 }
346 return;
347 }
348
349 // Monitors and stack
350 identify_vp_word(frame_index, addr,
351 (intptr_t *) istate->monitor_base(),
352 istate->stack_base(),
353 fieldbuf, buflen);
354 }
355
356 void SharkFrame::identify_word(int frame_index,
357 int offset,
358 char* fieldbuf,
359 char* valuebuf,
360 int buflen) const {
361 // Fixed part
362 switch (offset) {
363 case pc_off:
364 strncpy(fieldbuf, "pc", buflen);
365 if (method()->is_method()) {
366 nmethod *code = method()->code();
367 if (code && code->pc_desc_at(pc())) {
368 SimpleScopeDesc ssd(code, pc());
369 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
370 (intptr_t) pc(), ssd.bci());
371 }
372 }
373 return;
374
375 case unextended_sp_off:
376 strncpy(fieldbuf, "unextended_sp", buflen);
377 return;
378
379 case method_off:
380 strncpy(fieldbuf, "method", buflen);
381 if (method()->is_method()) {
382 method()->name_and_sig_as_C_string(valuebuf, buflen);
383 }
384 return;
385
386 case oop_tmp_off:
387 strncpy(fieldbuf, "oop_tmp", buflen);
388 return;
389 }
390
391 // Variable part
392 if (method()->is_method()) {
393 identify_vp_word(frame_index, addr_of_word(offset),
394 addr_of_word(header_words + 1),
395 unextended_sp() + method()->max_stack(),
396 fieldbuf, buflen);
397 }
398 }
399
400 void ZeroFrame::identify_vp_word(int frame_index,
401 intptr_t* addr,
402 intptr_t* monitor_base,
403 intptr_t* stack_base,
404 char* fieldbuf,
405 int buflen) const {
406 // Monitors
407 if (addr >= stack_base && addr < monitor_base) {
408 int monitor_size = frame::interpreter_frame_monitor_size();
409 int last_index = (monitor_base - stack_base) / monitor_size - 1;
410 int index = last_index - (addr - stack_base) / monitor_size;
411 intptr_t monitor = (intptr_t) (
412 (BasicObjectLock *) monitor_base - 1 - index);
413 intptr_t offset = (intptr_t) addr - monitor;
414
415 if (offset == BasicObjectLock::obj_offset_in_bytes())
416 snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
417 else if (offset == BasicObjectLock::lock_offset_in_bytes())
418 snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
419
420 return;
421 }
422
423 // Expression stack
424 if (addr < stack_base) {
425 snprintf(fieldbuf, buflen, "%s[%d]",
426 frame_index == 0 ? "stack_word" : "local",
427 (int) (stack_base - addr - 1));
428 return;
429 }
430 }
431
432 #ifndef PRODUCT
433
434 void frame::describe_pd(FrameValues& values, int frame_no) {
435
436 }
437
438 #endif
439
440 intptr_t *frame::initial_deoptimization_info() {
441 // unused... but returns fp() to minimize changes introduced by 7087445
442 return fp();
443 }