4006
|
1 /*
|
|
2 * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
|
|
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
|
|
4 *
|
|
5 * This code is free software; you can redistribute it and/or modify it
|
|
6 * under the terms of the GNU General Public License version 2 only, as
|
|
7 * published by the Free Software Foundation.
|
|
8 *
|
|
9 * This code is distributed in the hope that it will be useful, but WITHOUT
|
|
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
|
|
12 * version 2 for more details (a copy is included in the LICENSE file that
|
|
13 * accompanied this code).
|
|
14 *
|
|
15 * You should have received a copy of the GNU General Public License version
|
|
16 * 2 along with this work; if not, write to the Free Software Foundation,
|
|
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
|
|
18 *
|
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
|
|
20 * or visit www.oracle.com if you need additional information or have any
|
|
21 * questions.
|
|
22 *
|
|
23 */
|
|
24
|
|
25 #include <stdio.h>
|
|
26 #include <stdlib.h>
|
|
27 #include <string.h>
|
|
28 #include <errno.h>
|
|
29 // not available on macosx #include <gelf.h>
|
|
30
|
|
31 #include "libjvm_db.h"
|
|
32 #include "JvmOffsets.h"
|
|
33
|
|
34 #define LIBJVM_SO "libjvm.so"
|
|
35
|
|
36 #if defined(i386) || defined(__i386) || defined(__amd64)
|
|
37 #ifdef COMPILER2
|
|
38 #define X86_COMPILER2
|
|
39 #endif /* COMPILER2 */
|
|
40 #endif /* i386 */
|
|
41
|
|
42 typedef struct {
|
|
43 short vf_cnt; /* number of recognized java vframes */
|
|
44 short bci; /* current frame method byte code index */
|
|
45 int line; /* current frame method source line */
|
|
46 uint64_t new_fp; /* fp for the next frame */
|
|
47 uint64_t new_pc; /* pc for the next frame */
|
|
48 uint64_t new_sp; /* "raw" sp for the next frame (includes extension by interpreter/adapter */
|
|
49 char locinf; /* indicates there is valid location info */
|
|
50 } Jframe_t;
|
|
51
|
|
52 int Jlookup_by_regs(jvm_agent_t* J, const prgregset_t regs, char *name,
|
|
53 size_t size, Jframe_t *jframe);
|
|
54
|
|
55 int main(int arg) { return arg; }
|
|
56
|
|
57 static int debug = 0;
|
|
58
|
|
59 static void failed(int err, const char * file, int line) {
|
|
60 if (debug) {
|
|
61 fprintf(stderr, "failed %d at %s:%d\n", err, file, line);
|
|
62 }
|
|
63 }
|
|
64
|
|
65 static void warn(const char * file, int line, const char * msg) {
|
|
66 if (debug) {
|
|
67 fprintf(stderr, "warning: %s at %s:%d\n", msg, file, line);
|
|
68 }
|
|
69 }
|
|
70
|
|
71 static void warn1(const char * file, int line, const char * msg, intptr_t arg1) {
|
|
72 if (debug) {
|
|
73 fprintf(stderr, "warning: ");
|
|
74 fprintf(stderr, msg, arg1);
|
|
75 fprintf(stderr, " at %s:%d\n", file, line);
|
|
76 }
|
|
77 }
|
|
78
|
|
79 #define CHECK_FAIL(err) \
|
|
80 if (err != PS_OK) { failed(err, __FILE__, __LINE__); goto fail; }
|
|
81 #define WARN(msg) warn(__FILE__, __LINE__, msg)
|
|
82 #define WARN1(msg, arg1) warn1(__FILE__, __LINE__, msg, arg1)
|
|
83
|
|
84 typedef struct VMStructEntry {
|
|
85 const char * typeName; /* The type name containing the given field (example: "Klass") */
|
|
86 const char * fieldName; /* The field name within the type (example: "_name") */
|
|
87 uint64_t address; /* Address of field; only used for static fields */
|
|
88 /* ("offset" can not be reused because of apparent SparcWorks compiler bug */
|
|
89 /* in generation of initializer data) */
|
|
90 } VMStructEntry;
|
|
91
|
|
92 /* Prototyping inlined methods */
|
|
93
|
|
94 int sprintf(char *s, const char *format, ...);
|
|
95
|
|
96 #define SZ16 sizeof(int16_t)
|
|
97 #define SZ32 sizeof(int32_t)
|
|
98
|
|
99 #define COMP_METHOD_SIGN '*'
|
|
100
|
|
101 #define MAX_VFRAMES_CNT 256
|
|
102
|
|
103 typedef struct vframe {
|
|
104 uint64_t methodOop;
|
|
105 int32_t sender_decode_offset;
|
|
106 int32_t methodIdx;
|
|
107 int32_t bci;
|
|
108 int32_t line;
|
|
109 } Vframe_t;
|
|
110
|
|
111 typedef struct frame {
|
|
112 uintptr_t fp;
|
|
113 uintptr_t pc;
|
|
114 uintptr_t sp;
|
|
115 uintptr_t sender_sp; // The unextended sp of the caller
|
|
116 } Frame_t;
|
|
117
|
|
118 typedef struct Nmethod_t {
|
|
119 struct jvm_agent* J;
|
|
120 Jframe_t *jframe;
|
|
121
|
|
122 uint64_t nm; /* _nmethod */
|
|
123 uint64_t pc;
|
|
124 uint64_t pc_desc;
|
|
125
|
|
126 int32_t orig_pc_offset; /* _orig_pc_offset */
|
|
127 int32_t instrs_beg; /* _code_offset */
|
|
128 int32_t instrs_end;
|
|
129 int32_t deopt_beg; /* _deoptimize_offset */
|
|
130 int32_t scopes_data_beg; /* _scopes_data_offset */
|
|
131 int32_t scopes_data_end;
|
|
132 int32_t oops_beg; /* _oops_offset */
|
|
133 int32_t oops_end;
|
|
134 int32_t scopes_pcs_beg; /* _scopes_pcs_offset */
|
|
135 int32_t scopes_pcs_end;
|
|
136
|
|
137 int vf_cnt;
|
|
138 Vframe_t vframes[MAX_VFRAMES_CNT];
|
|
139 } Nmethod_t;
|
|
140
|
|
141 struct jvm_agent {
|
|
142 struct ps_prochandle* P;
|
|
143
|
|
144 uint64_t nmethod_vtbl;
|
|
145 uint64_t CodeBlob_vtbl;
|
|
146 uint64_t BufferBlob_vtbl;
|
|
147 uint64_t RuntimeStub_vtbl;
|
|
148
|
|
149 uint64_t Use_Compressed_Oops_address;
|
|
150 uint64_t Universe_methodKlassObj_address;
|
|
151 uint64_t Universe_narrow_oop_base_address;
|
|
152 uint64_t Universe_narrow_oop_shift_address;
|
|
153 uint64_t CodeCache_heap_address;
|
|
154
|
|
155 /* Volatiles */
|
|
156 uint8_t Use_Compressed_Oops;
|
|
157 uint64_t Universe_methodKlassObj;
|
|
158 uint64_t Universe_narrow_oop_base;
|
|
159 uint32_t Universe_narrow_oop_shift;
|
|
160 uint64_t CodeCache_low;
|
|
161 uint64_t CodeCache_high;
|
|
162 uint64_t CodeCache_segmap_low;
|
|
163 uint64_t CodeCache_segmap_high;
|
|
164
|
|
165 int32_t SIZE_CodeCache_log2_segment;
|
|
166
|
|
167 uint64_t methodOopPtr;
|
|
168 uint64_t bcx;
|
|
169
|
|
170 Nmethod_t *N; /*Inlined methods support */
|
|
171 Frame_t prev_fr;
|
|
172 Frame_t curr_fr;
|
|
173 };
|
|
174
|
|
175 static int
|
|
176 read_string(struct ps_prochandle *P,
|
|
177 char *buf, /* caller's buffer */
|
|
178 size_t size, /* upper limit on bytes to read */
|
|
179 uintptr_t addr) /* address in process */
|
|
180 {
|
|
181 int err = PS_OK;
|
|
182 while (size-- > 1 && err == PS_OK) {
|
|
183 err = ps_pread(P, addr, buf, 1);
|
|
184 if (*buf == '\0') {
|
|
185 return PS_OK;
|
|
186 }
|
|
187 addr += 1;
|
|
188 buf += 1;
|
|
189 }
|
|
190 return -1;
|
|
191 }
|
|
192
|
|
193 static int read_compressed_pointer(jvm_agent_t* J, uint64_t base, uint32_t *ptr) {
|
|
194 int err = -1;
|
|
195 uint32_t ptr32;
|
|
196 err = ps_pread(J->P, base, &ptr32, sizeof(uint32_t));
|
|
197 *ptr = ptr32;
|
|
198 return err;
|
|
199 }
|
|
200
|
|
201 static int read_pointer(jvm_agent_t* J, uint64_t base, uint64_t* ptr) {
|
|
202 int err = -1;
|
|
203 uint32_t ptr32;
|
|
204
|
|
205 switch (DATA_MODEL) {
|
|
206 case PR_MODEL_LP64:
|
|
207 err = ps_pread(J->P, base, ptr, sizeof(uint64_t));
|
|
208 break;
|
|
209 case PR_MODEL_ILP32:
|
|
210 err = ps_pread(J->P, base, &ptr32, sizeof(uint32_t));
|
|
211 *ptr = ptr32;
|
|
212 break;
|
|
213 }
|
|
214
|
|
215 return err;
|
|
216 }
|
|
217
|
|
218 static int read_string_pointer(jvm_agent_t* J, uint64_t base, const char ** stringp) {
|
|
219 uint64_t ptr;
|
|
220 int err;
|
|
221 char buffer[1024];
|
|
222
|
|
223 *stringp = NULL;
|
|
224 err = read_pointer(J, base, &ptr);
|
|
225 CHECK_FAIL(err);
|
|
226 if (ptr != 0) {
|
|
227 err = read_string(J->P, buffer, sizeof(buffer), ptr);
|
|
228 CHECK_FAIL(err);
|
|
229 *stringp = strdup(buffer);
|
|
230 }
|
|
231 return PS_OK;
|
|
232
|
|
233 fail:
|
|
234 return err;
|
|
235 }
|
|
236
|
|
237 static int parse_vmstruct_entry(jvm_agent_t* J, uint64_t base, VMStructEntry* vmp) {
|
|
238 uint64_t ptr;
|
|
239 int err;
|
|
240
|
|
241 err = read_string_pointer(J, base + OFFSET_VMStructEntrytypeName, &vmp->typeName);
|
|
242 CHECK_FAIL(err);
|
|
243 err = read_string_pointer(J, base + OFFSET_VMStructEntryfieldName, &vmp->fieldName);
|
|
244 CHECK_FAIL(err);
|
|
245 err = read_pointer(J, base + OFFSET_VMStructEntryaddress, &vmp->address);
|
|
246 CHECK_FAIL(err);
|
|
247
|
|
248 return PS_OK;
|
|
249
|
|
250 fail:
|
|
251 if (vmp->typeName != NULL) free((void*)vmp->typeName);
|
|
252 if (vmp->fieldName != NULL) free((void*)vmp->fieldName);
|
|
253 return err;
|
|
254 }
|
|
255
|
|
256 static int parse_vmstructs(jvm_agent_t* J) {
|
|
257 VMStructEntry vmVar;
|
|
258 VMStructEntry* vmp = &vmVar;
|
|
259 uint64_t gHotSpotVMStructs;
|
|
260 psaddr_t sym_addr;
|
|
261 uint64_t base;
|
|
262 int err;
|
|
263
|
|
264 err = ps_pglobal_lookup(J->P, LIBJVM_SO, "gHotSpotVMStructs", &sym_addr);
|
|
265 CHECK_FAIL(err);
|
|
266 err = read_pointer(J, sym_addr, &gHotSpotVMStructs);
|
|
267 CHECK_FAIL(err);
|
|
268 base = gHotSpotVMStructs;
|
|
269
|
|
270 err = PS_OK;
|
|
271 while (err == PS_OK) {
|
|
272 memset(vmp, 0, sizeof(VMStructEntry));
|
|
273 err = parse_vmstruct_entry(J, base, vmp);
|
|
274 if (err != PS_OK || vmp->typeName == NULL) {
|
|
275 break;
|
|
276 }
|
|
277
|
|
278 if (vmp->typeName[0] == 'C' && strcmp("CodeCache", vmp->typeName) == 0) {
|
|
279 if (strcmp("_heap", vmp->fieldName) == 0) {
|
|
280 err = read_pointer(J, vmp->address, &J->CodeCache_heap_address);
|
|
281 }
|
|
282 } else if (vmp->typeName[0] == 'U' && strcmp("Universe", vmp->typeName) == 0) {
|
|
283 if (strcmp("_methodKlassObj", vmp->fieldName) == 0) {
|
|
284 J->Universe_methodKlassObj_address = vmp->address;
|
|
285 }
|
|
286 if (strcmp("_narrow_oop._base", vmp->fieldName) == 0) {
|
|
287 J->Universe_narrow_oop_base_address = vmp->address;
|
|
288 }
|
|
289 if (strcmp("_narrow_oop._shift", vmp->fieldName) == 0) {
|
|
290 J->Universe_narrow_oop_shift_address = vmp->address;
|
|
291 }
|
|
292 }
|
|
293 CHECK_FAIL(err);
|
|
294
|
|
295 base += SIZE_VMStructEntry;
|
|
296 if (vmp->typeName != NULL) free((void*)vmp->typeName);
|
|
297 if (vmp->fieldName != NULL) free((void*)vmp->fieldName);
|
|
298 }
|
|
299
|
|
300 return PS_OK;
|
|
301
|
|
302 fail:
|
|
303 if (vmp->typeName != NULL) free((void*)vmp->typeName);
|
|
304 if (vmp->fieldName != NULL) free((void*)vmp->fieldName);
|
|
305 return -1;
|
|
306 }
|
|
307
|
|
308 static int find_symbol(jvm_agent_t* J, const char *name, uint64_t* valuep) {
|
|
309 psaddr_t sym_addr;
|
|
310 int err;
|
|
311
|
|
312 err = ps_pglobal_lookup(J->P, LIBJVM_SO, name, &sym_addr);
|
|
313 if (err != PS_OK) goto fail;
|
|
314 *valuep = sym_addr;
|
|
315 return PS_OK;
|
|
316
|
|
317 fail:
|
|
318 return err;
|
|
319 }
|
|
320
|
|
321 static int read_volatiles(jvm_agent_t* J) {
|
|
322 uint64_t ptr;
|
|
323 int err;
|
|
324
|
|
325 err = find_symbol(J, "UseCompressedOops", &J->Use_Compressed_Oops_address);
|
|
326 if (err == PS_OK) {
|
|
327 err = ps_pread(J->P, J->Use_Compressed_Oops_address, &J->Use_Compressed_Oops, sizeof(uint8_t));
|
|
328 CHECK_FAIL(err);
|
|
329 } else {
|
|
330 J->Use_Compressed_Oops = 0;
|
|
331 }
|
|
332
|
|
333 err = read_pointer(J, J->Universe_methodKlassObj_address, &J->Universe_methodKlassObj);
|
|
334 CHECK_FAIL(err);
|
|
335
|
|
336 err = read_pointer(J, J->Universe_narrow_oop_base_address, &J->Universe_narrow_oop_base);
|
|
337 CHECK_FAIL(err);
|
|
338 err = ps_pread(J->P, J->Universe_narrow_oop_shift_address, &J->Universe_narrow_oop_shift, sizeof(uint32_t));
|
|
339 CHECK_FAIL(err);
|
|
340
|
|
341 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_memory +
|
|
342 OFFSET_VirtualSpace_low, &J->CodeCache_low);
|
|
343 CHECK_FAIL(err);
|
|
344 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_memory +
|
|
345 OFFSET_VirtualSpace_high, &J->CodeCache_high);
|
|
346 CHECK_FAIL(err);
|
|
347 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_segmap +
|
|
348 OFFSET_VirtualSpace_low, &J->CodeCache_segmap_low);
|
|
349 CHECK_FAIL(err);
|
|
350 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_segmap +
|
|
351 OFFSET_VirtualSpace_high, &J->CodeCache_segmap_high);
|
|
352 CHECK_FAIL(err);
|
|
353
|
|
354 err = ps_pread(J->P, J->CodeCache_heap_address + OFFSET_CodeHeap_log2_segment_size,
|
|
355 &J->SIZE_CodeCache_log2_segment, sizeof(J->SIZE_CodeCache_log2_segment));
|
|
356 CHECK_FAIL(err);
|
|
357
|
|
358 return PS_OK;
|
|
359
|
|
360 fail:
|
|
361 return err;
|
|
362 }
|
|
363
|
|
364
|
|
365 static int codecache_contains(jvm_agent_t* J, uint64_t ptr) {
|
|
366 /* make sure the code cache is up to date */
|
|
367 return (J->CodeCache_low <= ptr && ptr < J->CodeCache_high);
|
|
368 }
|
|
369
|
|
370 static uint64_t segment_for(jvm_agent_t* J, uint64_t p) {
|
|
371 return (p - J->CodeCache_low) >> J->SIZE_CodeCache_log2_segment;
|
|
372 }
|
|
373
|
|
374 static uint64_t block_at(jvm_agent_t* J, int i) {
|
|
375 return J->CodeCache_low + (i << J->SIZE_CodeCache_log2_segment);
|
|
376 }
|
|
377
|
|
378 static int find_start(jvm_agent_t* J, uint64_t ptr, uint64_t *startp) {
|
|
379 int err;
|
|
380
|
|
381 *startp = 0;
|
|
382 if (J->CodeCache_low <= ptr && ptr < J->CodeCache_high) {
|
|
383 int32_t used;
|
|
384 uint64_t segment = segment_for(J, ptr);
|
|
385 uint64_t block = J->CodeCache_segmap_low;
|
|
386 uint8_t tag;
|
|
387 err = ps_pread(J->P, block + segment, &tag, sizeof(tag));
|
|
388 CHECK_FAIL(err);
|
|
389 if (tag == 0xff)
|
|
390 return PS_OK;
|
|
391 while (tag > 0) {
|
|
392 err = ps_pread(J->P, block + segment, &tag, sizeof(tag));
|
|
393 CHECK_FAIL(err);
|
|
394 segment -= tag;
|
|
395 }
|
|
396 block = block_at(J, segment);
|
|
397 err = ps_pread(J->P, block + OFFSET_HeapBlockHeader_used, &used, sizeof(used));
|
|
398 CHECK_FAIL(err);
|
|
399 if (used) {
|
|
400 *startp = block + SIZE_HeapBlockHeader;
|
|
401 }
|
|
402 }
|
|
403 return PS_OK;
|
|
404
|
|
405 fail:
|
|
406 return -1;
|
|
407 }
|
|
408
|
|
409 static int find_jlong_constant(jvm_agent_t* J, const char *name, uint64_t* valuep) {
|
|
410 psaddr_t sym_addr;
|
|
411 int err = ps_pglobal_lookup(J->P, LIBJVM_SO, name, &sym_addr);
|
|
412 if (err == PS_OK) {
|
|
413 err = ps_pread(J->P, sym_addr, valuep, sizeof(uint64_t));
|
|
414 return err;
|
|
415 }
|
|
416 *valuep = -1;
|
|
417 return -1;
|
|
418 }
|
|
419
|
|
420 jvm_agent_t *Jagent_create(struct ps_prochandle *P, int vers) {
|
|
421 jvm_agent_t* J;
|
|
422 int err;
|
|
423
|
|
424 if (vers != JVM_DB_VERSION) {
|
|
425 errno = ENOTSUP;
|
|
426 return NULL;
|
|
427 }
|
|
428
|
|
429 J = (jvm_agent_t*)calloc(sizeof(struct jvm_agent), 1);
|
|
430
|
|
431 debug = getenv("LIBJVMDB_DEBUG") != NULL;
|
|
432 if (debug) debug = 3;
|
|
433
|
|
434 if (debug) {
|
|
435 fprintf(stderr, "Jagent_create: debug=%d\n", debug);
|
|
436 #ifdef X86_COMPILER2
|
|
437 fprintf(stderr, "Jagent_create: R_SP=%d, R_FP=%d, POINTER_SIZE=%d\n", R_SP, R_FP, POINTER_SIZE);
|
|
438 #endif /* X86_COMPILER2 */
|
|
439 }
|
|
440
|
|
441 J->P = P;
|
|
442
|
|
443 // Initialize the initial previous frame
|
|
444
|
|
445 J->prev_fr.fp = 0;
|
|
446 J->prev_fr.pc = 0;
|
|
447 J->prev_fr.sp = 0;
|
|
448 J->prev_fr.sender_sp = 0;
|
|
449
|
|
450 err = find_symbol(J, "__1cHnmethodG__vtbl_", &J->nmethod_vtbl);
|
|
451 CHECK_FAIL(err);
|
|
452 err = find_symbol(J, "__1cKBufferBlobG__vtbl_", &J->BufferBlob_vtbl);
|
|
453 if (err != PS_OK) J->BufferBlob_vtbl = 0;
|
|
454 err = find_symbol(J, "__1cICodeBlobG__vtbl_", &J->CodeBlob_vtbl);
|
|
455 CHECK_FAIL(err);
|
|
456 err = find_symbol(J, "__1cLRuntimeStubG__vtbl_", &J->RuntimeStub_vtbl);
|
|
457 CHECK_FAIL(err);
|
|
458
|
|
459 err = parse_vmstructs(J);
|
|
460 CHECK_FAIL(err);
|
|
461 err = read_volatiles(J);
|
|
462 CHECK_FAIL(err);
|
|
463
|
|
464 return J;
|
|
465
|
|
466 fail:
|
|
467 Jagent_destroy(J);
|
|
468 return NULL;
|
|
469 }
|
|
470
|
|
471 void Jagent_destroy(jvm_agent_t *J) {
|
|
472 if (J != NULL) {
|
|
473 free(J);
|
|
474 }
|
|
475 }
|
|
476
|
|
477 static int is_methodOop(jvm_agent_t* J, uint64_t methodOopPtr) {
|
|
478 uint64_t klass;
|
|
479 int err;
|
|
480 // If UseCompressedOops, this was a compressed oop.
|
|
481 if (J->Use_Compressed_Oops != 0) {
|
|
482 uint32_t cklass;
|
|
483 err = read_compressed_pointer(J, methodOopPtr + OFFSET_oopDesc_metadata,
|
|
484 &cklass);
|
|
485 // decode heap oop, same as oop.inline.hpp
|
|
486 klass = (uint64_t)((uintptr_t)J->Universe_narrow_oop_base +
|
|
487 ((uintptr_t)cklass << J->Universe_narrow_oop_shift));
|
|
488 } else {
|
|
489 err = read_pointer(J, methodOopPtr + OFFSET_oopDesc_metadata, &klass);
|
|
490 }
|
|
491 if (err != PS_OK) goto fail;
|
|
492 return klass == J->Universe_methodKlassObj;
|
|
493
|
|
494 fail:
|
|
495 return 0;
|
|
496 }
|
|
497
|
|
498 static int
|
|
499 name_for_methodOop(jvm_agent_t* J, uint64_t methodOopPtr, char * result, size_t size)
|
|
500 {
|
|
501 short nameIndex;
|
|
502 short signatureIndex;
|
|
503 uint64_t constantPool;
|
|
504 uint64_t constMethod;
|
|
505 uint64_t nameSymbol;
|
|
506 uint64_t signatureSymbol;
|
|
507 uint64_t klassPtr;
|
|
508 uint64_t klassSymbol;
|
|
509 short klassSymbolLength;
|
|
510 short nameSymbolLength;
|
|
511 short signatureSymbolLength;
|
|
512 char * nameString = NULL;
|
|
513 char * klassString = NULL;
|
|
514 char * signatureString = NULL;
|
|
515 int err;
|
|
516
|
|
517 err = read_pointer(J, methodOopPtr + OFFSET_methodOopDesc_constants, &constantPool);
|
|
518 CHECK_FAIL(err);
|
|
519 err = read_pointer(J, methodOopPtr + OFFSET_methodOopDesc_constMethod, &constMethod);
|
|
520 CHECK_FAIL(err);
|
|
521
|
|
522 /* To get name string */
|
|
523 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_name_index, &nameIndex, 2);
|
|
524 CHECK_FAIL(err);
|
|
525 err = read_pointer(J, constantPool + nameIndex * POINTER_SIZE + SIZE_constantPoolOopDesc, &nameSymbol);
|
|
526 CHECK_FAIL(err);
|
|
527 // The symbol is a CPSlot and has lower bit set to indicate metadata
|
|
528 nameSymbol &= (~1); // remove metadata lsb
|
|
529 err = ps_pread(J->P, nameSymbol + OFFSET_Symbol_length, &nameSymbolLength, 2);
|
|
530 CHECK_FAIL(err);
|
|
531 nameString = (char*)calloc(nameSymbolLength + 1, 1);
|
|
532 err = ps_pread(J->P, nameSymbol + OFFSET_Symbol_body, nameString, nameSymbolLength);
|
|
533 CHECK_FAIL(err);
|
|
534
|
|
535 /* To get signature string */
|
|
536 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_signature_index, &signatureIndex, 2);
|
|
537 CHECK_FAIL(err);
|
|
538 err = read_pointer(J, constantPool + signatureIndex * POINTER_SIZE + SIZE_constantPoolOopDesc, &signatureSymbol);
|
|
539 CHECK_FAIL(err);
|
|
540 signatureSymbol &= (~1); // remove metadata lsb
|
|
541 err = ps_pread(J->P, signatureSymbol + OFFSET_Symbol_length, &signatureSymbolLength, 2);
|
|
542 CHECK_FAIL(err);
|
|
543 signatureString = (char*)calloc(signatureSymbolLength + 1, 1);
|
|
544 err = ps_pread(J->P, signatureSymbol + OFFSET_Symbol_body, signatureString, signatureSymbolLength);
|
|
545 CHECK_FAIL(err);
|
|
546
|
|
547 /* To get klass string */
|
|
548 err = read_pointer(J, constantPool + OFFSET_constantPoolOopDesc_pool_holder, &klassPtr);
|
|
549 CHECK_FAIL(err);
|
|
550 err = read_pointer(J, klassPtr + OFFSET_Klass_name + SIZE_oopDesc, &klassSymbol);
|
|
551 CHECK_FAIL(err);
|
|
552 err = ps_pread(J->P, klassSymbol + OFFSET_Symbol_length, &klassSymbolLength, 2);
|
|
553 CHECK_FAIL(err);
|
|
554 klassString = (char*)calloc(klassSymbolLength + 1, 1);
|
|
555 err = ps_pread(J->P, klassSymbol + OFFSET_Symbol_body, klassString, klassSymbolLength);
|
|
556 CHECK_FAIL(err);
|
|
557
|
|
558 result[0] = '\0';
|
|
559 strncat(result, klassString, size);
|
|
560 size -= strlen(klassString);
|
|
561 strncat(result, ".", size);
|
|
562 size -= 1;
|
|
563 strncat(result, nameString, size);
|
|
564 size -= strlen(nameString);
|
|
565 strncat(result, signatureString, size);
|
|
566
|
|
567 if (nameString != NULL) free(nameString);
|
|
568 if (klassString != NULL) free(klassString);
|
|
569 if (signatureString != NULL) free(signatureString);
|
|
570
|
|
571 return PS_OK;
|
|
572
|
|
573 fail:
|
|
574 if (debug) {
|
|
575 fprintf(stderr, "name_for_methodOop: FAIL \n\n");
|
|
576 }
|
|
577 if (nameString != NULL) free(nameString);
|
|
578 if (klassString != NULL) free(klassString);
|
|
579 if (signatureString != NULL) free(signatureString);
|
|
580 return -1;
|
|
581 }
|
|
582
|
|
583 static int nmethod_info(Nmethod_t *N)
|
|
584 {
|
|
585 jvm_agent_t *J = N->J;
|
|
586 uint64_t nm = N->nm;
|
|
587 int32_t err;
|
|
588
|
|
589 if (debug > 2 )
|
|
590 fprintf(stderr, "\t nmethod_info: BEGIN \n");
|
|
591
|
|
592 /* Instructions */
|
|
593 err = ps_pread(J->P, nm + OFFSET_CodeBlob_code_offset, &N->instrs_beg, SZ32);
|
|
594 CHECK_FAIL(err);
|
|
595 err = ps_pread(J->P, nm + OFFSET_CodeBlob_data_offset, &N->instrs_end, SZ32);
|
|
596 CHECK_FAIL(err);
|
|
597 err = ps_pread(J->P, nm + OFFSET_nmethod_deoptimize_offset, &N->deopt_beg, SZ32);
|
|
598 CHECK_FAIL(err);
|
|
599 err = ps_pread(J->P, nm + OFFSET_nmethod_orig_pc_offset, &N->orig_pc_offset, SZ32);
|
|
600 CHECK_FAIL(err);
|
|
601
|
|
602 /* Oops */
|
|
603 err = ps_pread(J->P, nm + OFFSET_nmethod_oops_offset, &N->oops_beg, SZ32);
|
|
604 CHECK_FAIL(err);
|
|
605 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_data_offset, &N->oops_end, SZ32);
|
|
606 CHECK_FAIL(err);
|
|
607
|
|
608 /* scopes_pcs */
|
|
609 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_pcs_offset, &N->scopes_pcs_beg, SZ32);
|
|
610 CHECK_FAIL(err);
|
|
611 err = ps_pread(J->P, nm + OFFSET_nmethod_handler_table_offset, &N->scopes_pcs_end, SZ32);
|
|
612 CHECK_FAIL(err);
|
|
613
|
|
614 /* scopes_data */
|
|
615 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_data_offset, &N->scopes_data_beg, SZ32);
|
|
616 CHECK_FAIL(err);
|
|
617
|
|
618 if (debug > 2 ) {
|
|
619 N->scopes_data_end = N->scopes_pcs_beg;
|
|
620
|
|
621 fprintf(stderr, "\t nmethod_info: instrs_beg: %#x, instrs_end: %#x\n",
|
|
622 N->instrs_beg, N->instrs_end);
|
|
623
|
|
624 fprintf(stderr, "\t nmethod_info: deopt_beg: %#x \n",
|
|
625 N->deopt_beg);
|
|
626
|
|
627 fprintf(stderr, "\t nmethod_info: orig_pc_offset: %#x \n",
|
|
628 N->orig_pc_offset);
|
|
629
|
|
630 fprintf(stderr, "\t nmethod_info: oops_beg: %#x, oops_end: %#x\n",
|
|
631 N->oops_beg, N->oops_end);
|
|
632
|
|
633 fprintf(stderr, "\t nmethod_info: scopes_data_beg: %#x, scopes_data_end: %#x\n",
|
|
634 N->scopes_data_beg, N->scopes_data_end);
|
|
635
|
|
636 fprintf(stderr, "\t nmethod_info: scopes_pcs_beg: %#x, scopes_pcs_end: %#x\n",
|
|
637 N->scopes_pcs_beg, N->scopes_pcs_end);
|
|
638
|
|
639 fprintf(stderr, "\t nmethod_info: END \n\n");
|
|
640 }
|
|
641 return PS_OK;
|
|
642
|
|
643 fail:
|
|
644 return err;
|
|
645 }
|
|
646
|
|
647 static int
|
|
648 raw_read_int(jvm_agent_t* J, uint64_t *buffer, int32_t *val)
|
|
649 {
|
|
650 int shift = 0;
|
|
651 int value = 0;
|
|
652 uint8_t ch = 0;
|
|
653 int32_t err;
|
|
654 int32_t sum;
|
|
655 // Constants for UNSIGNED5 coding of Pack200
|
|
656 // see compressedStream.hpp
|
|
657 enum {
|
|
658 lg_H = 6,
|
|
659 H = 1<<lg_H,
|
|
660 BitsPerByte = 8,
|
|
661 L = (1<<BitsPerByte)-H,
|
|
662 };
|
|
663 int i;
|
|
664
|
|
665 err = ps_pread(J->P, (*buffer)++, &ch, sizeof(uint8_t));
|
|
666 CHECK_FAIL(err);
|
|
667 if (debug > 2)
|
|
668 fprintf(stderr, "\t\t\t raw_read_int: *buffer: %#llx, ch: %#x\n", *buffer, ch);
|
|
669
|
|
670 sum = ch;
|
|
671 if ( sum >= L ) {
|
|
672 int32_t lg_H_i = lg_H;
|
|
673 // Read maximum of 5 total bytes (we've already read 1).
|
|
674 // See CompressedReadStream::read_int_mb
|
|
675 for ( i = 0; i < 4; i++) {
|
|
676 err = ps_pread(J->P, (*buffer)++, &ch, sizeof(uint8_t));
|
|
677 CHECK_FAIL(err);
|
|
678 sum += ch << lg_H_i;
|
|
679 if (ch < L ) {
|
|
680 *val = sum;
|
|
681 return PS_OK;
|
|
682 }
|
|
683 lg_H_i += lg_H;
|
|
684 }
|
|
685 }
|
|
686 *val = sum;
|
|
687 return PS_OK;
|
|
688
|
|
689 fail:
|
|
690 return err;
|
|
691 }
|
|
692
|
|
693 static int
|
|
694 read_pair(jvm_agent_t* J, uint64_t *buffer, int32_t *bci, int32_t *line)
|
|
695 {
|
|
696 uint8_t next = 0;
|
|
697 int32_t bci_delta;
|
|
698 int32_t line_delta;
|
|
699 int32_t err;
|
|
700
|
|
701 if (debug > 2)
|
|
702 fprintf(stderr, "\t\t read_pair: BEGIN\n");
|
|
703
|
|
704 err = ps_pread(J->P, (*buffer)++, &next, sizeof(uint8_t));
|
|
705 CHECK_FAIL(err);
|
|
706
|
|
707 if (next == 0) {
|
|
708 if (debug > 2)
|
|
709 fprintf(stderr, "\t\t read_pair: END: next == 0\n");
|
|
710 return 1; /* stream terminated */
|
|
711 }
|
|
712 if (next == 0xFF) {
|
|
713 if (debug > 2)
|
|
714 fprintf(stderr, "\t\t read_pair: END: next == 0xFF\n");
|
|
715
|
|
716 /* Escape character, regular compression used */
|
|
717
|
|
718 err = raw_read_int(J, buffer, &bci_delta);
|
|
719 CHECK_FAIL(err);
|
|
720
|
|
721 err = raw_read_int(J, buffer, &line_delta);
|
|
722 CHECK_FAIL(err);
|
|
723
|
|
724 *bci += bci_delta;
|
|
725 *line += line_delta;
|
|
726
|
|
727 if (debug > 2) {
|
|
728 fprintf(stderr, "\t\t read_pair: delta = (line %d: %d)\n",
|
|
729 line_delta, bci_delta);
|
|
730 fprintf(stderr, "\t\t read_pair: unpack= (line %d: %d)\n",
|
|
731 *line, *bci);
|
|
732 }
|
|
733 } else {
|
|
734 /* Single byte compression used */
|
|
735 *bci += next >> 3;
|
|
736 *line += next & 0x7;
|
|
737 if (debug > 2) {
|
|
738 fprintf(stderr, "\t\t read_pair: delta = (line %d: %d)\n",
|
|
739 next & 0x7, next >> 3);
|
|
740 fprintf(stderr, "\t\t read_pair: unpack= (line %d: %d)\n",
|
|
741 *line, *bci);
|
|
742 }
|
|
743 }
|
|
744 if (debug > 2)
|
|
745 fprintf(stderr, "\t\t read_pair: END\n");
|
|
746 return PS_OK;
|
|
747
|
|
748 fail:
|
|
749 if (debug)
|
|
750 fprintf(stderr, "\t\t read_pair: FAIL\n");
|
|
751 return err;
|
|
752 }
|
|
753
|
|
754 static int
|
|
755 line_number_from_bci(jvm_agent_t* J, Vframe_t *vf)
|
|
756 {
|
|
757 uint64_t buffer;
|
|
758 uint16_t code_size;
|
|
759 uint64_t code_end_delta;
|
|
760 uint64_t constMethod;
|
|
761 int8_t access_flags;
|
|
762 int32_t best_bci = 0;
|
|
763 int32_t stream_bci = 0;
|
|
764 int32_t stream_line = 0;
|
|
765 int32_t err;
|
|
766
|
|
767 if (debug > 2) {
|
|
768 char name[256];
|
|
769 err = name_for_methodOop(J, vf->methodOop, name, 256);
|
|
770 CHECK_FAIL(err);
|
|
771 fprintf(stderr, "\t line_number_from_bci: BEGIN, method name: %s, targ bci: %d\n",
|
|
772 name, vf->bci);
|
|
773 }
|
|
774
|
|
775 err = read_pointer(J, vf->methodOop + OFFSET_methodOopDesc_constMethod, &constMethod);
|
|
776 CHECK_FAIL(err);
|
|
777
|
|
778 vf->line = 0;
|
|
779 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_flags, &access_flags, sizeof(int8_t));
|
|
780 CHECK_FAIL(err);
|
|
781
|
|
782 if (!(access_flags & constMethodOopDesc_has_linenumber_table)) {
|
|
783 if (debug > 2)
|
|
784 fprintf(stderr, "\t line_number_from_bci: END: !HAS_LINE_NUMBER_TABLE \n\n");
|
|
785 return PS_OK;
|
|
786 }
|
|
787
|
|
788 /* The line numbers are a short array of 2-tuples [start_pc, line_number].
|
|
789 * Not necessarily sorted and not necessarily one-to-one.
|
|
790 */
|
|
791
|
|
792 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_code_size, &code_size, SZ16);
|
|
793 CHECK_FAIL(err);
|
|
794
|
|
795 /* inlined_table_start() */
|
|
796 code_end_delta = (uint64_t) (access_flags & AccessFlags_NATIVE) ? 2*POINTER_SIZE : 0;
|
|
797 buffer = constMethod + (uint64_t) SIZE_constMethodOopDesc + (uint64_t) code_size + code_end_delta;
|
|
798
|
|
799 if (debug > 2) {
|
|
800 fprintf(stderr, "\t\t line_number_from_bci: methodOop: %#llx, native: %d\n",
|
|
801 vf->methodOop, (access_flags & AccessFlags_NATIVE));
|
|
802 fprintf(stderr, "\t\t line_number_from_bci: buffer: %#llx, code_size: %d\n",
|
|
803 buffer, (int) code_size);
|
|
804 }
|
|
805
|
|
806 while (read_pair(J, &buffer, &stream_bci, &stream_line) == 0) {
|
|
807 if (stream_bci == vf->bci) {
|
|
808 /* perfect match */
|
|
809 if (debug > 2)
|
|
810 fprintf(stderr, "\t line_number_from_bci: END: exact line: %ld \n\n", vf->line);
|
|
811 vf->line = stream_line;
|
|
812 return PS_OK;
|
|
813 } else {
|
|
814 /* update best_bci/line */
|
|
815 if (stream_bci < vf->bci && stream_bci >= best_bci) {
|
|
816 best_bci = stream_bci;
|
|
817 vf->line = stream_line;
|
|
818 if (debug > 2) {
|
|
819 fprintf(stderr, "\t line_number_from_bci: best_bci: %ld, best_line: %ld\n",
|
|
820 best_bci, vf->line);
|
|
821 }
|
|
822 }
|
|
823 }
|
|
824 }
|
|
825 if (debug > 2)
|
|
826 fprintf(stderr, "\t line_number_from_bci: END: line: %ld \n\n", vf->line);
|
|
827 return PS_OK;
|
|
828
|
|
829 fail:
|
|
830 if (debug)
|
|
831 fprintf(stderr, "\t line_number_from_bci: FAIL\n");
|
|
832 return err;
|
|
833 }
|
|
834
|
|
835 static int
|
|
836 get_real_pc(Nmethod_t *N, uint64_t pc_desc, uint64_t *real_pc)
|
|
837 {
|
|
838 int32_t pc_offset;
|
|
839 int32_t err;
|
|
840
|
|
841 err = ps_pread(N->J->P, pc_desc + OFFSET_PcDesc_pc_offset, &pc_offset, SZ32);
|
|
842 CHECK_FAIL(err);
|
|
843
|
|
844 *real_pc = N->nm + N->instrs_beg + pc_offset;
|
|
845 if (debug > 2) {
|
|
846 fprintf(stderr, "\t\t get_real_pc: pc_offset: %lx, real_pc: %llx\n",
|
|
847 pc_offset, *real_pc);
|
|
848 }
|
|
849 return PS_OK;
|
|
850
|
|
851 fail:
|
|
852 return err;
|
|
853 }
|
|
854
|
|
855 /* Finds a PcDesc with real-pc equal to N->pc */
|
|
856 static int pc_desc_at(Nmethod_t *N)
|
|
857 {
|
|
858 uint64_t pc_diff;
|
|
859 int32_t offs;
|
|
860 int32_t err;
|
|
861
|
|
862 if (debug > 2)
|
|
863 fprintf(stderr, "\t pc_desc_at: BEGIN\n");
|
|
864
|
|
865 N->vf_cnt = 0;
|
|
866 N->pc_desc = 0;
|
|
867
|
|
868 for (offs = N->scopes_pcs_beg; offs < N->scopes_pcs_end; offs += SIZE_PcDesc) {
|
|
869 uint64_t pd;
|
|
870 uint64_t best_pc_diff = 16; /* some approximation */
|
|
871 uint64_t real_pc = 0;
|
|
872
|
|
873 pd = N->nm + offs;
|
|
874 err = get_real_pc(N, pd, &real_pc);
|
|
875 CHECK_FAIL(err);
|
|
876
|
|
877 pc_diff = real_pc - N->pc;
|
|
878
|
|
879 /* In general, this fragment should work */
|
|
880 if (pc_diff == 0) {
|
|
881 N->pc_desc = pd;
|
|
882 if (debug) {
|
|
883 fprintf(stderr, "\t pc_desc_at: END: pc_desc: FOUND: %#lx \n\n", pd);
|
|
884 }
|
|
885 return PS_OK;
|
|
886 }
|
|
887 /* This fragment is to be able to find out an appropriate
|
|
888 * pc_desc entry even if pc_desc info is inaccurate.
|
|
889 */
|
|
890 if (best_pc_diff > pc_diff && pc_diff > 0) {
|
|
891 best_pc_diff = pc_diff;
|
|
892 N->pc_desc = pd;
|
|
893 }
|
|
894 }
|
|
895 if (debug) {
|
|
896 fprintf(stderr, "\t pc_desc_at: END: pc_desc NOT FOUND");
|
|
897 if (pc_diff < 20)
|
|
898 fprintf(stderr, ", best pc_diff: %d\n\n", pc_diff);
|
|
899 else
|
|
900 fprintf(stderr, "\n\n");
|
|
901 }
|
|
902 return PS_OK;
|
|
903
|
|
904 fail:
|
|
905 return err;
|
|
906 }
|
|
907
|
|
908 static int
|
|
909 scope_desc_at(Nmethod_t *N, int32_t decode_offset, Vframe_t *vf)
|
|
910 {
|
|
911 uint64_t buffer;
|
|
912 int32_t err;
|
|
913
|
|
914 if (debug > 2) {
|
|
915 fprintf(stderr, "\t\t scope_desc_at: BEGIN \n");
|
|
916 }
|
|
917
|
|
918 buffer = N->nm + N->scopes_data_beg + decode_offset;
|
|
919
|
|
920 err = raw_read_int(N->J, &buffer, &vf->sender_decode_offset);
|
|
921 CHECK_FAIL(err);
|
|
922
|
|
923 err = raw_read_int(N->J, &buffer, &vf->methodIdx);
|
|
924 CHECK_FAIL(err);
|
|
925
|
|
926 err = raw_read_int(N->J, &buffer, &vf->bci);
|
|
927 CHECK_FAIL(err);
|
|
928
|
|
929 if (debug > 2) {
|
|
930 fprintf(stderr, "\t\t scope_desc_at: sender_decode_offset: %#x\n",
|
|
931 vf->sender_decode_offset);
|
|
932 fprintf(stderr, "\t\t scope_desc_at: methodIdx: %d\n", vf->methodIdx);
|
|
933 fprintf(stderr, "\t\t scope_desc_at: bci: %d\n", vf->bci);
|
|
934
|
|
935 fprintf(stderr, "\t\t scope_desc_at: END \n\n");
|
|
936 }
|
|
937 return PS_OK;
|
|
938
|
|
939 fail:
|
|
940 return err;
|
|
941 }
|
|
942
|
|
943 static int scopeDesc_chain(Nmethod_t *N) {
|
|
944 int32_t decode_offset = 0;
|
|
945 int32_t err;
|
|
946
|
|
947 if (debug > 2) {
|
|
948 fprintf(stderr, "\t scopeDesc_chain: BEGIN\n");
|
|
949 }
|
|
950
|
|
951 err = ps_pread(N->J->P, N->pc_desc + OFFSET_PcDesc_scope_decode_offset,
|
|
952 &decode_offset, SZ32);
|
|
953 CHECK_FAIL(err);
|
|
954
|
|
955 while (decode_offset > 0) {
|
|
956 Vframe_t *vf = &N->vframes[N->vf_cnt];
|
|
957
|
|
958 if (debug > 2) {
|
|
959 fprintf(stderr, "\t scopeDesc_chain: decode_offset: %#x\n", decode_offset);
|
|
960 }
|
|
961
|
|
962 err = scope_desc_at(N, decode_offset, vf);
|
|
963 CHECK_FAIL(err);
|
|
964
|
|
965 if (vf->methodIdx > ((N->oops_end - N->oops_beg) / POINTER_SIZE)) {
|
|
966 fprintf(stderr, "\t scopeDesc_chain: (methodIdx > oops length) !\n");
|
|
967 return -1;
|
|
968 }
|
|
969 err = read_pointer(N->J, N->nm + N->oops_beg + (vf->methodIdx-1)*POINTER_SIZE,
|
|
970 &vf->methodOop);
|
|
971 CHECK_FAIL(err);
|
|
972
|
|
973 if (vf->methodOop) {
|
|
974 N->vf_cnt++;
|
|
975 err = line_number_from_bci(N->J, vf);
|
|
976 CHECK_FAIL(err);
|
|
977 if (debug > 2) {
|
|
978 fprintf(stderr, "\t scopeDesc_chain: methodOop: %#8llx, line: %ld\n",
|
|
979 vf->methodOop, vf->line);
|
|
980 }
|
|
981 }
|
|
982 decode_offset = vf->sender_decode_offset;
|
|
983 }
|
|
984 if (debug > 2) {
|
|
985 fprintf(stderr, "\t scopeDesc_chain: END \n\n");
|
|
986 }
|
|
987 return PS_OK;
|
|
988
|
|
989 fail:
|
|
990 if (debug) {
|
|
991 fprintf(stderr, "\t scopeDesc_chain: FAIL \n\n");
|
|
992 }
|
|
993 return err;
|
|
994 }
|
|
995
|
|
996
|
|
997 static int
|
|
998 name_for_nmethod(jvm_agent_t* J,
|
|
999 uint64_t nm,
|
|
1000 uint64_t pc,
|
|
1001 uint64_t methodOop,
|
|
1002 char *result,
|
|
1003 size_t size,
|
|
1004 Jframe_t *jframe
|
|
1005 ) {
|
|
1006 Nmethod_t *N;
|
|
1007 Vframe_t *vf;
|
|
1008 int32_t err;
|
|
1009 int deoptimized = 0;
|
|
1010
|
|
1011 if (debug) {
|
|
1012 fprintf(stderr, "name_for_nmethod: BEGIN: nmethod: %#llx, pc: %#llx\n", nm, pc);
|
|
1013 }
|
|
1014 if (J->N == NULL) {
|
|
1015 J->N = (Nmethod_t *) malloc(sizeof(Nmethod_t));
|
|
1016 }
|
|
1017 memset(J->N, 0, sizeof(Nmethod_t)); /* Initial stat: all values are zeros */
|
|
1018 N = J->N;
|
|
1019 N->J = J;
|
|
1020 N->nm = nm;
|
|
1021 N->pc = pc;
|
|
1022 N->jframe = jframe;
|
|
1023
|
|
1024 err = nmethod_info(N);
|
|
1025 CHECK_FAIL(err);
|
|
1026 if (debug) {
|
|
1027 fprintf(stderr, "name_for_nmethod: pc: %#llx, deopt_pc: %#llx\n",
|
|
1028 pc, N->nm + N->deopt_beg);
|
|
1029 }
|
|
1030
|
|
1031 /* check for a deoptimized frame */
|
|
1032 if ( pc == N->nm + N->deopt_beg) {
|
|
1033 uint64_t base;
|
|
1034 if (debug) {
|
|
1035 fprintf(stderr, "name_for_nmethod: found deoptimized frame\n");
|
|
1036 }
|
|
1037 if (J->prev_fr.sender_sp != 0) {
|
|
1038 base = J->prev_fr.sender_sp + N->orig_pc_offset;
|
|
1039 } else {
|
|
1040 base = J->curr_fr.sp + N->orig_pc_offset;
|
|
1041 }
|
|
1042 err = read_pointer(J, base, &N->pc);
|
|
1043 CHECK_FAIL(err);
|
|
1044 if (debug) {
|
|
1045 fprintf(stderr, "name_for_nmethod: found deoptimized frame converting pc from %#8llx to %#8llx\n",
|
|
1046 pc, N->pc);
|
|
1047 }
|
|
1048 deoptimized = 1;
|
|
1049 }
|
|
1050
|
|
1051 err = pc_desc_at(N);
|
|
1052 CHECK_FAIL(err);
|
|
1053
|
|
1054 if (N->pc_desc > 0) {
|
|
1055 jframe->locinf = 1;
|
|
1056 err = scopeDesc_chain(N);
|
|
1057 CHECK_FAIL(err);
|
|
1058 }
|
|
1059 result[0] = COMP_METHOD_SIGN;
|
|
1060 vf = &N->vframes[0];
|
|
1061 if (N->vf_cnt > 0) {
|
|
1062 jframe->vf_cnt = N->vf_cnt;
|
|
1063 jframe->bci = vf->bci;
|
|
1064 jframe->line = vf->line;
|
|
1065 err = name_for_methodOop(J, N->vframes[0].methodOop, result+1, size-1);
|
|
1066 CHECK_FAIL(err);
|
|
1067 } else {
|
|
1068 err = name_for_methodOop(J, methodOop, result+1, size-1);
|
|
1069 CHECK_FAIL(err);
|
|
1070 }
|
|
1071 if (deoptimized) {
|
|
1072 strncat(result + 1, " [deoptimized frame]; ", size-1);
|
|
1073 } else {
|
|
1074 strncat(result + 1, " [compiled] ", size-1);
|
|
1075 }
|
|
1076 if (debug)
|
|
1077 fprintf(stderr, "name_for_nmethod: END: method name: %s, vf_cnt: %d\n\n",
|
|
1078 result, N->vf_cnt);
|
|
1079 return PS_OK;
|
|
1080
|
|
1081 fail:
|
|
1082 if (debug)
|
|
1083 fprintf(stderr, "name_for_nmethod: FAIL \n\n");
|
|
1084 return err;
|
|
1085 }
|
|
1086
|
|
1087 int is_bci(intptr_t bcx) {
|
|
1088 switch (DATA_MODEL) {
|
|
1089 case PR_MODEL_LP64:
|
|
1090 return ((uintptr_t) bcx) <= ((uintptr_t) MAX_METHOD_CODE_SIZE) ;
|
|
1091 case PR_MODEL_ILP32:
|
|
1092 default:
|
|
1093 return 0 <= bcx && bcx <= MAX_METHOD_CODE_SIZE;
|
|
1094 }
|
|
1095 }
|
|
1096
|
|
1097 static int
|
|
1098 name_for_imethod(jvm_agent_t* J,
|
|
1099 uint64_t bcx,
|
|
1100 uint64_t methodOop,
|
|
1101 char *result,
|
|
1102 size_t size,
|
|
1103 Jframe_t *jframe
|
|
1104 ) {
|
|
1105 uint64_t bci;
|
|
1106 uint64_t constMethod;
|
|
1107 Vframe_t vframe = {0};
|
|
1108 Vframe_t *vf = &vframe;
|
|
1109 int32_t err;
|
|
1110
|
|
1111 err = read_pointer(J, methodOop + OFFSET_methodOopDesc_constMethod, &constMethod);
|
|
1112 CHECK_FAIL(err);
|
|
1113
|
|
1114 bci = is_bci(bcx) ? bcx : bcx - (constMethod + (uint64_t) SIZE_constMethodOopDesc);
|
|
1115
|
|
1116 if (debug)
|
|
1117 fprintf(stderr, "\t name_for_imethod: BEGIN: methodOop: %#llx\n", methodOop);
|
|
1118
|
|
1119 err = name_for_methodOop(J, methodOop, result, size);
|
|
1120 CHECK_FAIL(err);
|
|
1121 if (debug)
|
|
1122 fprintf(stderr, "\t name_for_imethod: method name: %s\n", result);
|
|
1123
|
|
1124 if (bci > 0) {
|
|
1125 vf->methodOop = methodOop;
|
|
1126 vf->bci = bci;
|
|
1127 err = line_number_from_bci(J, vf);
|
|
1128 CHECK_FAIL(err);
|
|
1129 }
|
|
1130 jframe->bci = vf->bci;
|
|
1131 jframe->line = vf->line;
|
|
1132 jframe->locinf = 1;
|
|
1133
|
|
1134 if (debug) {
|
|
1135 fprintf(stderr, "\t name_for_imethod: END: bci: %d, line: %d\n\n",
|
|
1136 vf->bci, vf->line);
|
|
1137 }
|
|
1138 return PS_OK;
|
|
1139
|
|
1140 fail:
|
|
1141 if (debug)
|
|
1142 fprintf(stderr, "\t name_for_imethod: FAIL\n");
|
|
1143 return err;
|
|
1144 }
|
|
1145
|
|
1146 static int
|
|
1147 name_for_codecache(jvm_agent_t* J, uint64_t fp, uint64_t pc, char * result,
|
|
1148 size_t size, Jframe_t *jframe, int* is_interpreted)
|
|
1149 {
|
|
1150 uint64_t start;
|
|
1151 uint64_t vtbl;
|
|
1152 int32_t err;
|
|
1153 *is_interpreted = 0;
|
|
1154
|
|
1155 result[0] = '\0';
|
|
1156
|
|
1157 err = find_start(J, pc, &start);
|
|
1158 CHECK_FAIL(err);
|
|
1159
|
|
1160 err = read_pointer(J, start, &vtbl);
|
|
1161 CHECK_FAIL(err);
|
|
1162
|
|
1163 if (vtbl == J->nmethod_vtbl) {
|
|
1164 uint64_t methodOop;
|
|
1165
|
|
1166 err = read_pointer(J, start + OFFSET_nmethod_method, &methodOop);
|
|
1167 CHECK_FAIL(err);
|
|
1168
|
|
1169 if (debug) {
|
|
1170 fprintf(stderr, "name_for_codecache: start: %#8llx, pc: %#8llx, methodOop: %#8llx \n",
|
|
1171 start, pc, methodOop);
|
|
1172 }
|
|
1173 err = name_for_nmethod(J, start, pc, methodOop, result, size, jframe);
|
|
1174 CHECK_FAIL(err);
|
|
1175 } else if (vtbl == J->BufferBlob_vtbl) {
|
|
1176 const char * name;
|
|
1177
|
|
1178 err = read_string_pointer(J, start + OFFSET_CodeBlob_name, &name);
|
|
1179
|
|
1180 /*
|
|
1181 * Temporary usage of string "Interpreter".
|
|
1182 * We need some other way to distinguish "StubRoutines"
|
|
1183 * and regular interpreted frames.
|
|
1184 */
|
|
1185 if (err == PS_OK && strncmp(name, "Interpreter", 11) == 0) {
|
|
1186 *is_interpreted = 1;
|
|
1187 if (is_methodOop(J, J->methodOopPtr)) {
|
|
1188 return name_for_imethod(J, J->bcx, J->methodOopPtr, result, size, jframe);
|
|
1189 }
|
|
1190 }
|
|
1191
|
|
1192 if (err == PS_OK) {
|
|
1193 strncpy(result, name, size);
|
|
1194 free((void*)name);
|
|
1195 } else {
|
|
1196 strncpy(result, "<unknown BufferBlob>", size);
|
|
1197 }
|
|
1198 /* return PS_OK; */
|
|
1199 } else {
|
|
1200 const char * name;
|
|
1201
|
|
1202 err = read_string_pointer(J, start + OFFSET_CodeBlob_name, &name);
|
|
1203 if (err == PS_OK) {
|
|
1204 strncpy(result, name, size);
|
|
1205 free((void*)name);
|
|
1206 } else {
|
|
1207 strncpy(result, "<unknown CodeBlob>", size);
|
|
1208 WARN1("unknown CodeBlob: vtbl = 0x%x", vtbl);
|
|
1209 }
|
|
1210 }
|
|
1211 result[size-1] = '\0';
|
|
1212
|
|
1213 #ifdef X86_COMPILER2
|
|
1214 if (vtbl != J->RuntimeStub_vtbl) {
|
|
1215 uint64_t trial_pc;
|
|
1216 int frame_size;
|
|
1217 err = ps_pread(J->P, start + OFFSET_CodeBlob_frame_size,
|
|
1218 &frame_size, SZ32);
|
|
1219 CHECK_FAIL(err);
|
|
1220
|
|
1221 // frame_size is in words, we want bytes.
|
|
1222 frame_size *= POINTER_SIZE; /* word => byte conversion */
|
|
1223
|
|
1224 /*
|
|
1225 Because c2 doesn't use FP as a framepointer the value of sp/fp we receive
|
|
1226 in the initial entry to a set of stack frames containing server frames
|
|
1227 will pretty much be nonsense. We can detect that nonsense by looking to
|
|
1228 see if the PC we received is correct if we look at the expected storage
|
|
1229 location in relation to the FP (ie. POINTER_SIZE(FP) )
|
|
1230 */
|
|
1231
|
|
1232 err = read_pointer(J, fp + POINTER_SIZE , &trial_pc);
|
|
1233 if ( (err != PS_OK || trial_pc != pc) && frame_size > 0 ) {
|
|
1234 // Either we couldn't even read at the "fp" or the pc didn't match
|
|
1235 // both are sure clues that the fp is bogus. We no search the stack
|
|
1236 // for a reasonable number of words trying to find the bogus fp
|
|
1237 // and the current pc in adjacent words. The we will be able to
|
|
1238 // deduce an approximation of the frame pointer and actually get
|
|
1239 // the correct stack pointer. Which we can then unwind for the
|
|
1240 // next frame.
|
|
1241 int i;
|
|
1242 uint64_t check;
|
|
1243 uint64_t base = J->curr_fr.sp;
|
|
1244 uint64_t prev_fp = 0;
|
|
1245 for ( i = 0; i < frame_size * 5 ; i++, base += POINTER_SIZE ) {
|
|
1246 err = read_pointer(J, base , &check);
|
|
1247 CHECK_FAIL(err);
|
|
1248 if (check == fp) {
|
|
1249 base += POINTER_SIZE;
|
|
1250 err = read_pointer(J, base , &check);
|
|
1251 CHECK_FAIL(err);
|
|
1252 if (check == pc) {
|
|
1253 if (debug) {
|
|
1254 fprintf(stderr, "name_for_codecache: found matching fp/pc combo at 0x%llx\n", base - POINTER_SIZE);
|
|
1255 }
|
|
1256 prev_fp = base - 2 * POINTER_SIZE;
|
|
1257 break;
|
|
1258 }
|
|
1259 }
|
|
1260 }
|
|
1261 if ( prev_fp != 0 ) {
|
|
1262 // real_sp is the sp we should have received for this frame
|
|
1263 uint64_t real_sp = prev_fp + 2 * POINTER_SIZE;
|
|
1264 // +POINTER_SIZE because callee owns the return address so caller's sp is +1 word
|
|
1265 jframe->new_sp = real_sp + frame_size + POINTER_SIZE;
|
|
1266 err = read_pointer(J, jframe->new_sp - POINTER_SIZE , &jframe->new_pc);
|
|
1267 CHECK_FAIL(err);
|
|
1268 err = read_pointer(J, jframe->new_sp - 2*POINTER_SIZE, &jframe->new_fp);
|
|
1269 CHECK_FAIL(err);
|
|
1270 return PS_OK;
|
|
1271 }
|
|
1272 }
|
|
1273
|
|
1274 /* A prototype to workaround FP absence */
|
|
1275 /*
|
|
1276 * frame_size can be 0 for StubRoutines (1) frame.
|
|
1277 * In this case it should work with fp as usual.
|
|
1278 */
|
|
1279 if (frame_size > 0) {
|
|
1280 jframe->new_fp = J->prev_fr.fp + frame_size;
|
|
1281 jframe->new_sp = jframe->new_fp + 2 * POINTER_SIZE;
|
|
1282 } else {
|
|
1283 memset(&J->curr_fr, 0, sizeof(Frame_t));
|
|
1284 err = read_pointer(J, fp, &jframe->new_fp);
|
|
1285 CHECK_FAIL(err);
|
|
1286
|
|
1287 err = read_pointer(J, jframe->new_fp + POINTER_SIZE, &jframe->new_pc);
|
|
1288 CHECK_FAIL(err);
|
|
1289 }
|
|
1290 if (debug) {
|
|
1291 fprintf(stderr, "name_for_codecache: %s, frame_size=%#lx\n",
|
|
1292 result, frame_size);
|
|
1293 fprintf(stderr, "name_for_codecache: prev_fr.fp=%#lx, fp=%#lx\n",
|
|
1294 J->prev_fr.fp, jframe->new_fp);
|
|
1295 }
|
|
1296 }
|
|
1297 #endif /* X86_COMPILER2 */
|
|
1298
|
|
1299 return PS_OK;
|
|
1300
|
|
1301 fail:
|
|
1302 return err;
|
|
1303 }
|
|
1304
|
|
1305 int Jget_vframe(jvm_agent_t* J, int vframe_no,
|
|
1306 char *name, size_t size, Jframe_t *jframe)
|
|
1307 {
|
|
1308 Nmethod_t *N = J->N;
|
|
1309 Vframe_t *vf;
|
|
1310 int32_t err;
|
|
1311
|
|
1312 if (vframe_no >= N->vf_cnt) {
|
|
1313 (void) sprintf(name, "Wrong inlinedMethod%1d()", vframe_no);
|
|
1314 return -1;
|
|
1315 }
|
|
1316 vf = N->vframes + vframe_no;
|
|
1317 name[0] = COMP_METHOD_SIGN;
|
|
1318 err = name_for_methodOop(J, vf->methodOop, name + 1, size);
|
|
1319 CHECK_FAIL(err);
|
|
1320
|
|
1321 jframe->bci = vf->bci;
|
|
1322 jframe->line = vf->line;
|
|
1323 if (debug) {
|
|
1324 fprintf(stderr, "\t Jget_vframe: method name: %s, line: %ld\n",
|
|
1325 name, vf->line);
|
|
1326 }
|
|
1327 return PS_OK;
|
|
1328
|
|
1329 fail:
|
|
1330 if (debug) {
|
|
1331 fprintf(stderr, "\t Jget_vframe: FAIL\n");
|
|
1332 }
|
|
1333 return err;
|
|
1334 }
|
|
1335
|
|
1336 #define MAX_SYM_SIZE 256
|
|
1337
|
|
1338 int Jlookup_by_regs(jvm_agent_t* J, const prgregset_t regs, char *name,
|
|
1339 size_t size, Jframe_t *jframe) {
|
|
1340 uintptr_t fp;
|
|
1341 uintptr_t pc;
|
|
1342 /* arguments given to read_pointer need to be worst case sized */
|
|
1343 uint64_t methodOopPtr = 0;
|
|
1344 uint64_t sender_sp;
|
|
1345 uint64_t bcx = 0;
|
|
1346 int is_interpreted = 0;
|
|
1347 int result = PS_OK;
|
|
1348 int err = PS_OK;
|
|
1349
|
|
1350 if (J == NULL) {
|
|
1351 return -1;
|
|
1352 }
|
|
1353
|
|
1354 jframe->vf_cnt = 1;
|
|
1355 jframe->new_fp = 0;
|
|
1356 jframe->new_pc = 0;
|
|
1357 jframe->line = 0;
|
|
1358 jframe->bci = 0;
|
|
1359 jframe->locinf = 0;
|
|
1360
|
|
1361 read_volatiles(J);
|
|
1362 pc = (uintptr_t) regs[R_PC];
|
|
1363 J->curr_fr.pc = pc;
|
|
1364 J->curr_fr.fp = regs[R_FP];
|
|
1365 J->curr_fr.sp = regs[R_SP];
|
|
1366
|
|
1367 if (debug)
|
|
1368 fprintf(stderr, "Jlookup_by_regs: BEGINs: fp=%#lx, pc=%#lx\n", regs[R_FP], pc);
|
|
1369
|
|
1370 #if defined(sparc) || defined(__sparc)
|
|
1371 /* The following workaround is for SPARC. CALL instruction occupates 8 bytes.
|
|
1372 * In the pcDesc structure return pc offset is recorded for CALL instructions.
|
|
1373 * regs[R_PC] contains a CALL instruction pc offset.
|
|
1374 */
|
|
1375 pc += 8;
|
|
1376 bcx = (uintptr_t) regs[R_L1];
|
|
1377 methodOopPtr = (uintptr_t) regs[R_L2];
|
|
1378 sender_sp = regs[R_I5];
|
|
1379 if (debug > 2) {
|
|
1380 fprintf(stderr, "\nregs[R_I1]=%lx, regs[R_I2]=%lx, regs[R_I5]=%lx, regs[R_L1]=%lx, regs[R_L2]=%lx\n",
|
|
1381 regs[R_I1], regs[R_I2], regs[R_I5], regs[R_L1], regs[R_L2]);
|
|
1382 }
|
|
1383 #elif defined(i386) || defined(__i386) || defined(__amd64)
|
|
1384
|
|
1385 fp = (uintptr_t) regs[R_FP];
|
|
1386 if (J->prev_fr.fp == 0) {
|
|
1387 #ifdef X86_COMPILER2
|
|
1388 /* A workaround for top java frames */
|
|
1389 J->prev_fr.fp = (uintptr_t)(regs[R_SP] - 2 * POINTER_SIZE);
|
|
1390 #else
|
|
1391 J->prev_fr.fp = (uintptr_t)(regs[R_SP] - POINTER_SIZE);
|
|
1392 #endif /* COMPILER2 */
|
|
1393 }
|
|
1394 if (debug > 2) {
|
|
1395 printf("Jlookup_by_regs: J->prev_fr.fp = %#lx\n", J->prev_fr.fp);
|
|
1396 }
|
|
1397
|
|
1398 if (read_pointer(J, fp + OFFSET_interpreter_frame_method, &methodOopPtr) != PS_OK) {
|
|
1399 methodOopPtr = 0;
|
|
1400 }
|
|
1401 if (read_pointer(J, fp + OFFSET_interpreter_frame_sender_sp, &sender_sp) != PS_OK) {
|
|
1402 sender_sp = 0;
|
|
1403 }
|
|
1404 if (read_pointer(J, fp + OFFSET_interpreter_frame_bcx_offset, &bcx) != PS_OK) {
|
|
1405 bcx = 0;
|
|
1406 }
|
|
1407 #endif /* i386 */
|
|
1408
|
|
1409 J->methodOopPtr = methodOopPtr;
|
|
1410 J->bcx = bcx;
|
|
1411
|
|
1412 /* On x86 with C2 JVM: native frame may have wrong regs[R_FP]
|
|
1413 * For example: JVM_SuspendThread frame poins to the top interpreted frame.
|
|
1414 * If we call is_methodOop(J, methodOopPtr) before codecache_contains(J, pc)
|
|
1415 * then we go over and omit both: nmethod and I2CAdapter frames.
|
|
1416 * Note, that regs[R_PC] is always correct if frame defined correctly.
|
|
1417 * So it is better to call codecache_contains(J, pc) from the beginning.
|
|
1418 */
|
|
1419 #ifndef X86_COMPILER2
|
|
1420 if (is_methodOop(J, J->methodOopPtr)) {
|
|
1421 result = name_for_imethod(J, bcx, J->methodOopPtr, name, size, jframe);
|
|
1422 /* If the methodOopPtr is a method then this is highly likely to be
|
|
1423 an interpreter frame */
|
|
1424 if (result >= 0) {
|
|
1425 is_interpreted = 1;
|
|
1426 }
|
|
1427 } else
|
|
1428 #endif /* ! X86_COMPILER2 */
|
|
1429
|
|
1430 if (codecache_contains(J, pc)) {
|
|
1431 result = name_for_codecache(J, fp, pc, name, size, jframe, &is_interpreted);
|
|
1432 }
|
|
1433 #ifdef X86_COMPILER2
|
|
1434 else if (is_methodOop(J, J->methodOopPtr)) {
|
|
1435 result = name_for_imethod(J, bcx, J->methodOopPtr, name, size, jframe);
|
|
1436 /* If the methodOopPtr is a method then this is highly likely to be
|
|
1437 an interpreter frame */
|
|
1438 if (result >= 0) {
|
|
1439 is_interpreted = 1;
|
|
1440 }
|
|
1441 }
|
|
1442 #endif /* X86_COMPILER2 */
|
|
1443 else {
|
|
1444 if (debug) {
|
|
1445 fprintf(stderr, "Jlookup_by_regs: END with -1\n\n");
|
|
1446 }
|
|
1447 result = -1;
|
|
1448 }
|
|
1449 if (!is_interpreted) {
|
|
1450 sender_sp = 0;
|
|
1451 }
|
|
1452 J->curr_fr.sender_sp = sender_sp;
|
|
1453
|
|
1454 #ifdef X86_COMPILER2
|
|
1455 if (!J->curr_fr.fp) {
|
|
1456 J->curr_fr.fp = (jframe->new_fp) ? jframe->new_fp : (uintptr_t)regs[R_FP];
|
|
1457 }
|
|
1458 if (!jframe->new_pc && jframe->new_fp) {
|
|
1459 // This seems dubious
|
|
1460 read_pointer(J, jframe->new_fp + POINTER_SIZE, &jframe->new_pc);
|
|
1461 CHECK_FAIL(err);
|
|
1462 if (debug > 2) {
|
|
1463 printf("Jlookup_by_regs: (update pc) jframe->new_fp: %#llx, jframe->new_pc: %#llx\n",
|
|
1464 jframe->new_fp, jframe->new_pc);
|
|
1465 }
|
|
1466 }
|
|
1467
|
|
1468 #endif /* X86_COMPILER2 */
|
|
1469 J->prev_fr = J->curr_fr;
|
|
1470
|
|
1471 if (debug)
|
|
1472 fprintf(stderr, "Jlookup_by_regs: END\n\n");
|
|
1473
|
|
1474 return result;
|
|
1475
|
|
1476 fail:
|
|
1477 return err;
|
|
1478 }
|
|
1479
|
|
1480 void update_gregs(prgregset_t gregs, Jframe_t jframe) {
|
|
1481 #ifdef X86_COMPILER2
|
|
1482 if (debug > 0) {
|
|
1483 fprintf(stderr, "update_gregs: before update sp = 0x%llx, fp = 0x%llx, pc = 0x%llx\n", gregs[R_SP], gregs[R_FP], gregs[R_PC]);
|
|
1484 }
|
|
1485 /*
|
|
1486 * A workaround for java C2 frames with unconventional FP.
|
|
1487 * may have to modify regset with new values for FP/PC/SP when needed.
|
|
1488 */
|
|
1489 if (jframe.new_sp) {
|
|
1490 *((uintptr_t *) &gregs[R_SP]) = (uintptr_t) jframe.new_sp;
|
|
1491 } else {
|
|
1492 // *((uintptr_t *) &gregs[R_SP]) = (uintptr_t) gregs[R_FP] + 2 * POINTER_SIZE;
|
|
1493 }
|
|
1494
|
|
1495 if (jframe.new_fp) {
|
|
1496 *((uintptr_t *) &gregs[R_FP]) = (uintptr_t) jframe.new_fp;
|
|
1497 }
|
|
1498 if (jframe.new_pc) {
|
|
1499 *((uintptr_t *) &gregs[R_PC]) = (uintptr_t) jframe.new_pc;
|
|
1500 }
|
|
1501 if (debug > 0) {
|
|
1502 fprintf(stderr, "update_gregs: after update sp = 0x%llx, fp = 0x%llx, pc = 0x%llx\n", gregs[R_SP], gregs[R_FP], gregs[R_PC]);
|
|
1503 }
|
|
1504 #endif /* X86_COMPILER2 */
|
|
1505 }
|
|
1506
|
|
1507 /*
|
|
1508 * Iterates over java frames at current location given by 'gregs'.
|
|
1509 *
|
|
1510 * Returns -1 if no java frames are present or if an error is encountered.
|
|
1511 * Returns the result of calling 'func' if the return value is non-zero.
|
|
1512 * Returns 0 otherwise.
|
|
1513 */
|
|
1514 int Jframe_iter(jvm_agent_t *J, prgregset_t gregs, java_stack_f *func, void* cld) {
|
|
1515 char buf[MAX_SYM_SIZE + 1];
|
|
1516 Jframe_t jframe;
|
|
1517 int i = 0, res;
|
|
1518 #ifdef X86_COMPILER2
|
|
1519 if (debug > 0) {
|
|
1520 fprintf(stderr, "Jframe_iter: Entry sp = 0x%llx, fp = 0x%llx, pc = 0x%llx\n", gregs[R_SP], gregs[R_FP], gregs[R_PC]);
|
|
1521 }
|
|
1522 #endif /* X86_COMPILER2 */
|
|
1523
|
|
1524 memset(&jframe, 0, sizeof(Jframe_t));
|
|
1525 memset(buf, 0, sizeof(buf));
|
|
1526 res = Jlookup_by_regs(J, gregs, buf, sizeof(buf), &jframe);
|
|
1527 if (res != PS_OK)
|
|
1528 return (-1);
|
|
1529
|
|
1530
|
|
1531 res = func(cld, gregs, buf, (jframe.locinf)? jframe.bci : -1,
|
|
1532 jframe.line, NULL);
|
|
1533 if (res != 0) {
|
|
1534 update_gregs(gregs, jframe);
|
|
1535 return (res);
|
|
1536 }
|
|
1537 for (i = 1; i < jframe.vf_cnt; i++) {
|
|
1538 Jget_vframe(J, i, buf, sizeof(buf), &jframe);
|
|
1539 res = func(cld, gregs, buf, (jframe.locinf)? jframe.bci : -1,
|
|
1540 jframe.line, NULL);
|
|
1541 if (res != 0) {
|
|
1542 update_gregs(gregs, jframe);
|
|
1543 return (res);
|
|
1544 }
|
|
1545 }
|
|
1546 update_gregs(gregs, jframe);
|
|
1547 return (0);
|
|
1548 }
|