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