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 #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 // We borrow this call to set the thread pointer in the interpreter
102 // state; the hook to set up deoptimized frames isn't supplied it.
103 assert(pc == NULL, "should be");
104 get_interpreterState()->set_thread((JavaThread *) thread);
105 }
106
107 bool frame::safe_for_sender(JavaThread *thread) {
108 ShouldNotCallThis();
109 }
110
111 void frame::pd_gc_epilog() {
112 }
113
114 bool frame::is_interpreted_frame_valid(JavaThread *thread) const {
115 ShouldNotCallThis();
116 }
117
118 BasicType frame::interpreter_frame_result(oop* oop_result,
119 jvalue* value_result) {
120 assert(is_interpreted_frame(), "interpreted frame expected");
121 methodOop method = interpreter_frame_method();
122 BasicType type = method->result_type();
123 intptr_t* tos_addr = (intptr_t *) interpreter_frame_tos_address();
124 oop obj;
125
126 switch (type) {
127 case T_VOID:
128 break;
129 case T_BOOLEAN:
130 value_result->z = *(jboolean *) tos_addr;
131 break;
132 case T_BYTE:
133 value_result->b = *(jbyte *) tos_addr;
134 break;
135 case T_CHAR:
136 value_result->c = *(jchar *) tos_addr;
137 break;
138 case T_SHORT:
139 value_result->s = *(jshort *) tos_addr;
140 break;
141 case T_INT:
142 value_result->i = *(jint *) tos_addr;
143 break;
144 case T_LONG:
145 value_result->j = *(jlong *) tos_addr;
146 break;
147 case T_FLOAT:
148 value_result->f = *(jfloat *) tos_addr;
149 break;
150 case T_DOUBLE:
151 value_result->d = *(jdouble *) tos_addr;
152 break;
153
154 case T_OBJECT:
155 case T_ARRAY:
156 if (method->is_native()) {
157 obj = get_interpreterState()->oop_temp();
158 }
159 else {
160 oop* obj_p = (oop *) tos_addr;
161 obj = (obj_p == NULL) ? (oop) NULL : *obj_p;
162 }
163 assert(obj == NULL || Universe::heap()->is_in(obj), "sanity check");
164 *oop_result = obj;
165 break;
166
167 default:
168 ShouldNotReachHere();
169 }
170
171 return type;
172 }
173
174 int frame::frame_size(RegisterMap* map) const {
175 #ifdef PRODUCT
176 ShouldNotCallThis();
177 #else
178 return 0; // make javaVFrame::print_value work
179 #endif // PRODUCT
180 }
181
182 intptr_t* frame::interpreter_frame_tos_at(jint offset) const {
183 int index = (Interpreter::expr_offset_in_bytes(offset) / wordSize);
184 return &interpreter_frame_tos_address()[index];
185 }
186
187 void frame::zero_print_on_error(int frame_index,
188 outputStream* st,
189 char* buf,
190 int buflen) const {
191 // Divide the buffer between the field and the value
192 buflen >>= 1;
193 char *fieldbuf = buf;
194 char *valuebuf = buf + buflen;
195
196 // Print each word of the frame
197 for (intptr_t *addr = sp(); addr <= fp(); addr++) {
198 int offset = fp() - addr;
199
200 // Fill in default values, then try and improve them
201 snprintf(fieldbuf, buflen, "word[%d]", offset);
202 snprintf(valuebuf, buflen, PTR_FORMAT, *addr);
203 zeroframe()->identify_word(frame_index, offset, fieldbuf, valuebuf, buflen);
204 fieldbuf[buflen - 1] = '\0';
205 valuebuf[buflen - 1] = '\0';
206
207 // Print the result
208 st->print_cr(" " PTR_FORMAT ": %-21s = %s", addr, fieldbuf, valuebuf);
209 }
210 }
211
212 void ZeroFrame::identify_word(int frame_index,
213 int offset,
214 char* fieldbuf,
215 char* valuebuf,
216 int buflen) const {
217 switch (offset) {
218 case next_frame_off:
219 strncpy(fieldbuf, "next_frame", buflen);
220 break;
221
222 case frame_type_off:
223 strncpy(fieldbuf, "frame_type", buflen);
224 if (is_entry_frame())
225 strncpy(valuebuf, "ENTRY_FRAME", buflen);
226 else if (is_interpreter_frame())
227 strncpy(valuebuf, "INTERPRETER_FRAME", buflen);
228 else if (is_shark_frame())
229 strncpy(valuebuf, "SHARK_FRAME", buflen);
230 else if (is_fake_stub_frame())
231 strncpy(valuebuf, "FAKE_STUB_FRAME", buflen);
232 break;
233
234 default:
235 if (is_entry_frame()) {
236 as_entry_frame()->identify_word(
237 frame_index, offset, fieldbuf, valuebuf, buflen);
238 }
239 else if (is_interpreter_frame()) {
240 as_interpreter_frame()->identify_word(
241 frame_index, offset, fieldbuf, valuebuf, buflen);
242 }
243 else if (is_shark_frame()) {
244 as_shark_frame()->identify_word(
245 frame_index, offset, fieldbuf, valuebuf, buflen);
246 }
247 else if (is_fake_stub_frame()) {
248 as_fake_stub_frame()->identify_word(
249 frame_index, offset, fieldbuf, valuebuf, buflen);
250 }
251 }
252 }
253
254 void EntryFrame::identify_word(int frame_index,
255 int offset,
256 char* fieldbuf,
257 char* valuebuf,
258 int buflen) const {
259 switch (offset) {
260 case call_wrapper_off:
261 strncpy(fieldbuf, "call_wrapper", buflen);
262 break;
263
264 default:
265 snprintf(fieldbuf, buflen, "local[%d]", offset - 3);
266 }
267 }
268
269 void InterpreterFrame::identify_word(int frame_index,
270 int offset,
271 char* fieldbuf,
272 char* valuebuf,
273 int buflen) const {
274 interpreterState istate = interpreter_state();
275 bool is_valid = istate->self_link() == istate;
276 intptr_t *addr = addr_of_word(offset);
277
278 // Fixed part
279 if (addr >= (intptr_t *) istate) {
280 const char *field = istate->name_of_field_at_address((address) addr);
281 if (field) {
282 if (is_valid && !strcmp(field, "_method")) {
283 istate->method()->name_and_sig_as_C_string(valuebuf, buflen);
284 }
285 else if (is_valid && !strcmp(field, "_bcp") && istate->bcp()) {
286 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
287 (intptr_t) istate->bcp(),
288 istate->method()->bci_from(istate->bcp()));
289 }
290 snprintf(fieldbuf, buflen, "%sistate->%s",
291 field[strlen(field) - 1] == ')' ? "(": "", field);
292 }
293 else if (addr == (intptr_t *) istate) {
294 strncpy(fieldbuf, "(vtable for istate)", buflen);
295 }
296 return;
297 }
298
299 // Variable part
300 if (!is_valid)
301 return;
302
303 // JNI stuff
304 if (istate->method()->is_native() && addr < istate->stack_base()) {
305 address hA = istate->method()->signature_handler();
306 if (hA != NULL) {
307 if (hA != (address) InterpreterRuntime::slow_signature_handler) {
308 InterpreterRuntime::SignatureHandler *handler =
309 InterpreterRuntime::SignatureHandler::from_handlerAddr(hA);
310
311 intptr_t *params = istate->stack_base() - handler->argument_count();
312 if (addr >= params) {
313 int param = addr - params;
314 const char *desc = "";
315 if (param == 0)
316 desc = " (JNIEnv)";
317 else if (param == 1) {
318 if (istate->method()->is_static())
319 desc = " (mirror)";
320 else
321 desc = " (this)";
322 }
323 snprintf(fieldbuf, buflen, "parameter[%d]%s", param, desc);
324 return;
325 }
326
327 for (int i = 0; i < handler->argument_count(); i++) {
328 if (params[i] == (intptr_t) addr) {
329 snprintf(fieldbuf, buflen, "unboxed parameter[%d]", i);
330 return;
331 }
332 }
333 }
334 }
335 return;
336 }
337
338 // Monitors and stack
339 identify_vp_word(frame_index, addr,
340 (intptr_t *) istate->monitor_base(),
341 istate->stack_base(),
342 fieldbuf, buflen);
343 }
344
345 void SharkFrame::identify_word(int frame_index,
346 int offset,
347 char* fieldbuf,
348 char* valuebuf,
349 int buflen) const {
350 // Fixed part
351 switch (offset) {
352 case pc_off:
353 strncpy(fieldbuf, "pc", buflen);
354 if (method()->is_oop()) {
355 nmethod *code = method()->code();
356 if (code && code->pc_desc_at(pc())) {
357 SimpleScopeDesc ssd(code, pc());
358 snprintf(valuebuf, buflen, PTR_FORMAT " (bci %d)",
359 (intptr_t) pc(), ssd.bci());
360 }
361 }
362 return;
363
364 case unextended_sp_off:
365 strncpy(fieldbuf, "unextended_sp", buflen);
366 return;
367
368 case method_off:
369 strncpy(fieldbuf, "method", buflen);
370 if (method()->is_oop()) {
371 method()->name_and_sig_as_C_string(valuebuf, buflen);
372 }
373 return;
374
375 case oop_tmp_off:
376 strncpy(fieldbuf, "oop_tmp", buflen);
377 return;
378 }
379
380 // Variable part
381 if (method()->is_oop()) {
382 identify_vp_word(frame_index, addr_of_word(offset),
383 addr_of_word(header_words + 1),
384 unextended_sp() + method()->max_stack(),
385 fieldbuf, buflen);
386 }
387 }
388
389 void ZeroFrame::identify_vp_word(int frame_index,
390 intptr_t* addr,
391 intptr_t* monitor_base,
392 intptr_t* stack_base,
393 char* fieldbuf,
394 int buflen) const {
395 // Monitors
396 if (addr >= stack_base && addr < monitor_base) {
397 int monitor_size = frame::interpreter_frame_monitor_size();
398 int last_index = (monitor_base - stack_base) / monitor_size - 1;
399 int index = last_index - (addr - stack_base) / monitor_size;
400 intptr_t monitor = (intptr_t) (
401 (BasicObjectLock *) monitor_base - 1 - index);
402 intptr_t offset = (intptr_t) addr - monitor;
403
404 if (offset == BasicObjectLock::obj_offset_in_bytes())
405 snprintf(fieldbuf, buflen, "monitor[%d]->_obj", index);
406 else if (offset == BasicObjectLock::lock_offset_in_bytes())
407 snprintf(fieldbuf, buflen, "monitor[%d]->_lock", index);
408
409 return;
410 }
411
412 // Expression stack
413 if (addr < stack_base) {
414 snprintf(fieldbuf, buflen, "%s[%d]",
415 frame_index == 0 ? "stack_word" : "local",
416 (int) (stack_base - addr - 1));
417 return;
418 }
419 }