Mercurial > hg > truffle
annotate src/os/solaris/dtrace/libjvm_db.c @ 1552:c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
Summary: Change all the Sun copyrights to Oracle copyright
Reviewed-by: ohair
| author | trims |
|---|---|
| date | Thu, 27 May 2010 19:08:38 -0700 |
| parents | 167c2986d91b |
| children | e9ff18c4ace7 |
| rev | line source |
|---|---|
| 0 | 1 /* |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1123
diff
changeset
|
2 * Copyright (c) 2003, 2009, Oracle and/or its affiliates. All rights reserved. |
| 0 | 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 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1123
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1123
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1123
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 25 #include <stdio.h> | |
| 26 #include <stdlib.h> | |
| 27 #include <string.h> | |
| 28 #include <errno.h> | |
| 29 #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; /* _instructions_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_len; /* _oops_length */ | |
| 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 | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
149 uint64_t Use_Compressed_Oops_address; |
| 0 | 150 uint64_t Universe_methodKlassObj_address; |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
151 uint64_t Universe_narrow_oop_base_address; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
152 uint64_t Universe_narrow_oop_shift_address; |
| 0 | 153 uint64_t CodeCache_heap_address; |
| 154 | |
| 155 /* Volatiles */ | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
156 uint8_t Use_Compressed_Oops; |
| 0 | 157 uint64_t Universe_methodKlassObj; |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
158 uint64_t Universe_narrow_oop_base; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
159 uint32_t Universe_narrow_oop_shift; |
| 0 | 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 | |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
193 static int read_compressed_pointer(jvm_agent_t* J, uint64_t base, uint32_t *ptr) { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
194 int err = -1; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
195 uint32_t ptr32; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
196 err = ps_pread(J->P, base, &ptr32, sizeof(uint32_t)); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
197 *ptr = ptr32; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
198 return err; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
199 } |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
200 |
| 0 | 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 } | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
286 if (strcmp("_narrow_oop._base", vmp->fieldName) == 0) { |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
287 J->Universe_narrow_oop_base_address = vmp->address; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
288 } |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
289 if (strcmp("_narrow_oop._shift", vmp->fieldName) == 0) { |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
290 J->Universe_narrow_oop_shift_address = vmp->address; |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
291 } |
| 0 | 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 | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
308 static int find_symbol(jvm_agent_t* J, const char *name, uint64_t* valuep) { |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
309 psaddr_t sym_addr; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
310 int err; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
311 |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
312 err = ps_pglobal_lookup(J->P, LIBJVM_SO, name, &sym_addr); |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
313 if (err != PS_OK) goto fail; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
314 *valuep = sym_addr; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
315 return PS_OK; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
316 |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
317 fail: |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
318 return err; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
319 } |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
320 |
| 0 | 321 static int read_volatiles(jvm_agent_t* J) { |
| 322 uint64_t ptr; | |
| 323 int err; | |
| 324 | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
325 err = find_symbol(J, "UseCompressedOops", &J->Use_Compressed_Oops_address); |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
326 if (err == PS_OK) { |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
327 err = ps_pread(J->P, J->Use_Compressed_Oops_address, &J->Use_Compressed_Oops, sizeof(uint8_t)); |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
328 CHECK_FAIL(err); |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
329 } else { |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
330 J->Use_Compressed_Oops = 0; |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
331 } |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
332 |
| 0 | 333 err = read_pointer(J, J->Universe_methodKlassObj_address, &J->Universe_methodKlassObj); |
| 334 CHECK_FAIL(err); | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
335 |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
336 err = read_pointer(J, J->Universe_narrow_oop_base_address, &J->Universe_narrow_oop_base); |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
337 CHECK_FAIL(err); |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
338 err = ps_pread(J->P, J->Universe_narrow_oop_shift_address, &J->Universe_narrow_oop_shift, sizeof(uint32_t)); |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
339 CHECK_FAIL(err); |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
340 |
| 0 | 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; | |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
480 // If UseCompressedOops, this was a compressed oop. |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
481 if (J->Use_Compressed_Oops != 0) { |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
482 uint32_t cklass; |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
483 err = read_compressed_pointer(J, methodOopPtr + OFFSET_oopDesc_metadata, |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
484 &cklass); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
485 // decode heap oop, same as oop.inline.hpp |
|
642
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
486 klass = (uint64_t)((uintptr_t)J->Universe_narrow_oop_base + |
|
660978a2a31a
6791178: Specialize for zero as the compressed oop vm heap base
kvn
parents:
196
diff
changeset
|
487 ((uintptr_t)cklass << J->Universe_narrow_oop_shift)); |
|
113
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
488 } else { |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
489 err = read_pointer(J, methodOopPtr + OFFSET_oopDesc_metadata, &klass); |
|
ba764ed4b6f2
6420645: Create a vm that uses compressed oops for up to 32gb heapsizes
coleenp
parents:
0
diff
changeset
|
490 } |
| 0 | 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 err = ps_pread(J->P, nameSymbol + OFFSET_symbolOopDesc_length, &nameSymbolLength, 2); | |
| 528 CHECK_FAIL(err); | |
| 529 nameString = (char*)calloc(nameSymbolLength + 1, 1); | |
| 530 err = ps_pread(J->P, nameSymbol + OFFSET_symbolOopDesc_body, nameString, nameSymbolLength); | |
| 531 CHECK_FAIL(err); | |
| 532 | |
| 533 /* To get signature string */ | |
| 534 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_signature_index, &signatureIndex, 2); | |
| 535 CHECK_FAIL(err); | |
| 536 err = read_pointer(J, constantPool + signatureIndex * POINTER_SIZE + SIZE_constantPoolOopDesc, &signatureSymbol); | |
| 537 CHECK_FAIL(err); | |
| 538 err = ps_pread(J->P, signatureSymbol + OFFSET_symbolOopDesc_length, &signatureSymbolLength, 2); | |
| 539 CHECK_FAIL(err); | |
| 540 signatureString = (char*)calloc(signatureSymbolLength + 1, 1); | |
| 541 err = ps_pread(J->P, signatureSymbol + OFFSET_symbolOopDesc_body, signatureString, signatureSymbolLength); | |
| 542 CHECK_FAIL(err); | |
| 543 | |
| 544 /* To get klass string */ | |
| 545 err = read_pointer(J, constantPool + OFFSET_constantPoolOopDesc_pool_holder, &klassPtr); | |
| 546 CHECK_FAIL(err); | |
| 547 err = read_pointer(J, klassPtr + OFFSET_Klass_name + SIZE_oopDesc, &klassSymbol); | |
| 548 CHECK_FAIL(err); | |
| 549 err = ps_pread(J->P, klassSymbol + OFFSET_symbolOopDesc_length, &klassSymbolLength, 2); | |
| 550 CHECK_FAIL(err); | |
| 551 klassString = (char*)calloc(klassSymbolLength + 1, 1); | |
| 552 err = ps_pread(J->P, klassSymbol + OFFSET_symbolOopDesc_body, klassString, klassSymbolLength); | |
| 553 CHECK_FAIL(err); | |
| 554 | |
| 555 result[0] = '\0'; | |
| 556 strncat(result, klassString, size); | |
| 557 size -= strlen(klassString); | |
| 558 strncat(result, ".", size); | |
| 559 size -= 1; | |
| 560 strncat(result, nameString, size); | |
| 561 size -= strlen(nameString); | |
| 562 strncat(result, signatureString, size); | |
| 563 | |
| 564 if (nameString != NULL) free(nameString); | |
| 565 if (klassString != NULL) free(klassString); | |
| 566 if (signatureString != NULL) free(signatureString); | |
| 567 | |
| 568 return PS_OK; | |
| 569 | |
| 570 fail: | |
| 571 if (debug) { | |
| 572 fprintf(stderr, "name_for_methodOop: FAIL \n\n"); | |
| 573 } | |
| 574 if (nameString != NULL) free(nameString); | |
| 575 if (klassString != NULL) free(klassString); | |
| 576 if (signatureString != NULL) free(signatureString); | |
| 577 return -1; | |
| 578 } | |
| 579 | |
| 580 static int nmethod_info(Nmethod_t *N) | |
| 581 { | |
| 582 jvm_agent_t *J = N->J; | |
| 583 uint64_t nm = N->nm; | |
| 584 int32_t err; | |
| 585 | |
| 586 if (debug > 2 ) | |
| 587 fprintf(stderr, "\t nmethod_info: BEGIN \n"); | |
| 588 | |
| 589 /* Instructions */ | |
| 590 err = ps_pread(J->P, nm + OFFSET_CodeBlob_instructions_offset, &N->instrs_beg, SZ32); | |
| 591 CHECK_FAIL(err); | |
| 592 err = ps_pread(J->P, nm + OFFSET_CodeBlob_data_offset, &N->instrs_end, SZ32); | |
| 593 CHECK_FAIL(err); | |
| 594 err = ps_pread(J->P, nm + OFFSET_nmethod_deoptimize_offset, &N->deopt_beg, SZ32); | |
| 595 CHECK_FAIL(err); | |
| 596 err = ps_pread(J->P, nm + OFFSET_nmethod_orig_pc_offset, &N->orig_pc_offset, SZ32); | |
| 597 CHECK_FAIL(err); | |
| 598 | |
| 599 /* Oops */ | |
| 600 err = ps_pread(J->P, nm + OFFSET_CodeBlob_oops_offset, &N->oops_beg, SZ32); | |
| 601 CHECK_FAIL(err); | |
| 602 err = ps_pread(J->P, nm + OFFSET_CodeBlob_oops_length, &N->oops_len, SZ32); | |
| 603 CHECK_FAIL(err); | |
| 604 | |
| 605 /* scopes_pcs */ | |
| 606 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_pcs_offset, &N->scopes_pcs_beg, SZ32); | |
| 607 CHECK_FAIL(err); | |
| 608 err = ps_pread(J->P, nm + OFFSET_nmethod_handler_table_offset, &N->scopes_pcs_end, SZ32); | |
| 609 CHECK_FAIL(err); | |
| 610 | |
| 611 /* scopes_data */ | |
| 612 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_data_offset, &N->scopes_data_beg, SZ32); | |
| 613 CHECK_FAIL(err); | |
| 614 | |
| 615 if (debug > 2 ) { | |
| 616 N->scopes_data_end = N->scopes_pcs_beg; | |
| 617 | |
| 618 fprintf(stderr, "\t nmethod_info: instrs_beg: %#x, instrs_end: %#x\n", | |
| 619 N->instrs_beg, N->instrs_end); | |
| 620 | |
| 621 fprintf(stderr, "\t nmethod_info: deopt_beg: %#x \n", | |
| 622 N->deopt_beg); | |
| 623 | |
| 624 fprintf(stderr, "\t nmethod_info: orig_pc_offset: %#x \n", | |
| 625 N->orig_pc_offset); | |
| 626 | |
| 627 fprintf(stderr, "\t nmethod_info: oops_beg: %#x, oops_len: %#x\n", | |
| 628 N->oops_beg, N->oops_len); | |
| 629 | |
| 630 fprintf(stderr, "\t nmethod_info: scopes_data_beg: %#x, scopes_data_end: %#x\n", | |
| 631 N->scopes_data_beg, N->scopes_data_end); | |
| 632 | |
| 633 fprintf(stderr, "\t nmethod_info: scopes_pcs_beg: %#x, scopes_pcs_end: %#x\n", | |
| 634 N->scopes_pcs_beg, N->scopes_pcs_end); | |
| 635 | |
| 636 fprintf(stderr, "\t nmethod_info: END \n\n"); | |
| 637 } | |
| 638 return PS_OK; | |
| 639 | |
| 640 fail: | |
| 641 return err; | |
| 642 } | |
| 643 | |
| 644 static int | |
| 645 raw_read_int(jvm_agent_t* J, uint64_t *buffer, int32_t *val) | |
| 646 { | |
| 647 int shift = 0; | |
| 648 int value = 0; | |
| 649 uint8_t ch = 0; | |
| 650 int32_t err; | |
| 651 int32_t sum; | |
| 652 // Constants for UNSIGNED5 coding of Pack200 | |
| 653 // see compressedStream.hpp | |
| 654 enum { | |
| 655 lg_H = 6, | |
| 656 H = 1<<lg_H, | |
| 657 BitsPerByte = 8, | |
| 658 L = (1<<BitsPerByte)-H, | |
| 659 }; | |
| 660 int i; | |
| 661 | |
| 662 err = ps_pread(J->P, (*buffer)++, &ch, sizeof(uint8_t)); | |
| 663 CHECK_FAIL(err); | |
| 664 if (debug > 2) | |
| 665 fprintf(stderr, "\t\t\t raw_read_int: *buffer: %#llx, ch: %#x\n", *buffer, ch); | |
| 666 | |
| 667 sum = ch; | |
| 668 if ( sum >= L ) { | |
| 669 int32_t lg_H_i = lg_H; | |
| 670 // Read maximum of 5 total bytes (we've already read 1). | |
| 671 // See CompressedReadStream::read_int_mb | |
| 672 for ( i = 0; i < 4; i++) { | |
| 673 err = ps_pread(J->P, (*buffer)++, &ch, sizeof(uint8_t)); | |
| 674 CHECK_FAIL(err); | |
| 675 sum += ch << lg_H_i; | |
| 676 if (ch < L ) { | |
| 677 *val = sum; | |
| 678 return PS_OK; | |
| 679 } | |
| 680 lg_H_i += lg_H; | |
| 681 } | |
| 682 } | |
| 683 *val = sum; | |
| 684 return PS_OK; | |
| 685 | |
| 686 fail: | |
| 687 return err; | |
| 688 } | |
| 689 | |
| 690 static int | |
| 691 read_pair(jvm_agent_t* J, uint64_t *buffer, int32_t *bci, int32_t *line) | |
| 692 { | |
| 693 uint8_t next = 0; | |
| 694 int32_t bci_delta; | |
| 695 int32_t line_delta; | |
| 696 int32_t err; | |
| 697 | |
| 698 if (debug > 2) | |
| 699 fprintf(stderr, "\t\t read_pair: BEGIN\n"); | |
| 700 | |
| 701 err = ps_pread(J->P, (*buffer)++, &next, sizeof(uint8_t)); | |
| 702 CHECK_FAIL(err); | |
| 703 | |
| 704 if (next == 0) { | |
| 705 if (debug > 2) | |
| 706 fprintf(stderr, "\t\t read_pair: END: next == 0\n"); | |
| 707 return 1; /* stream terminated */ | |
| 708 } | |
| 709 if (next == 0xFF) { | |
| 710 if (debug > 2) | |
| 711 fprintf(stderr, "\t\t read_pair: END: next == 0xFF\n"); | |
| 712 | |
| 713 /* Escape character, regular compression used */ | |
| 714 | |
| 715 err = raw_read_int(J, buffer, &bci_delta); | |
| 716 CHECK_FAIL(err); | |
| 717 | |
| 718 err = raw_read_int(J, buffer, &line_delta); | |
| 719 CHECK_FAIL(err); | |
| 720 | |
| 721 *bci += bci_delta; | |
| 722 *line += line_delta; | |
| 723 | |
| 724 if (debug > 2) { | |
| 725 fprintf(stderr, "\t\t read_pair: delta = (line %d: %d)\n", | |
| 726 line_delta, bci_delta); | |
| 727 fprintf(stderr, "\t\t read_pair: unpack= (line %d: %d)\n", | |
| 728 *line, *bci); | |
| 729 } | |
| 730 } else { | |
| 731 /* Single byte compression used */ | |
| 732 *bci += next >> 3; | |
| 733 *line += next & 0x7; | |
| 734 if (debug > 2) { | |
| 735 fprintf(stderr, "\t\t read_pair: delta = (line %d: %d)\n", | |
| 736 next & 0x7, next >> 3); | |
| 737 fprintf(stderr, "\t\t read_pair: unpack= (line %d: %d)\n", | |
| 738 *line, *bci); | |
| 739 } | |
| 740 } | |
| 741 if (debug > 2) | |
| 742 fprintf(stderr, "\t\t read_pair: END\n"); | |
| 743 return PS_OK; | |
| 744 | |
| 745 fail: | |
| 746 if (debug) | |
| 747 fprintf(stderr, "\t\t read_pair: FAIL\n"); | |
| 748 return err; | |
| 749 } | |
| 750 | |
| 751 static int | |
| 752 line_number_from_bci(jvm_agent_t* J, Vframe_t *vf) | |
| 753 { | |
| 754 uint64_t buffer; | |
| 755 uint16_t code_size; | |
| 756 uint64_t code_end_delta; | |
| 757 uint64_t constMethod; | |
| 758 int8_t access_flags; | |
| 759 int32_t best_bci = 0; | |
| 760 int32_t stream_bci = 0; | |
| 761 int32_t stream_line = 0; | |
| 762 int32_t err; | |
| 763 | |
| 764 if (debug > 2) { | |
| 765 char name[256]; | |
| 766 err = name_for_methodOop(J, vf->methodOop, name, 256); | |
| 767 CHECK_FAIL(err); | |
| 768 fprintf(stderr, "\t line_number_from_bci: BEGIN, method name: %s, targ bci: %d\n", | |
| 769 name, vf->bci); | |
| 770 } | |
| 771 | |
| 772 err = read_pointer(J, vf->methodOop + OFFSET_methodOopDesc_constMethod, &constMethod); | |
| 773 CHECK_FAIL(err); | |
| 774 | |
| 775 vf->line = 0; | |
| 776 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_flags, &access_flags, sizeof(int8_t)); | |
| 777 CHECK_FAIL(err); | |
| 778 | |
| 779 if (!(access_flags & constMethodOopDesc_has_linenumber_table)) { | |
| 780 if (debug > 2) | |
| 781 fprintf(stderr, "\t line_number_from_bci: END: !HAS_LINE_NUMBER_TABLE \n\n"); | |
| 782 return PS_OK; | |
| 783 } | |
| 784 | |
| 785 /* The line numbers are a short array of 2-tuples [start_pc, line_number]. | |
| 786 * Not necessarily sorted and not necessarily one-to-one. | |
| 787 */ | |
| 788 | |
| 789 err = ps_pread(J->P, constMethod + OFFSET_constMethodOopDesc_code_size, &code_size, SZ16); | |
| 790 CHECK_FAIL(err); | |
| 791 | |
| 792 /* inlined_table_start() */ | |
| 793 code_end_delta = (uint64_t) (access_flags & AccessFlags_NATIVE) ? 2*POINTER_SIZE : 0; | |
| 794 buffer = constMethod + (uint64_t) SIZE_constMethodOopDesc + (uint64_t) code_size + code_end_delta; | |
| 795 | |
| 796 if (debug > 2) { | |
| 797 fprintf(stderr, "\t\t line_number_from_bci: methodOop: %#llx, native: %d\n", | |
| 798 vf->methodOop, (access_flags & AccessFlags_NATIVE)); | |
| 799 fprintf(stderr, "\t\t line_number_from_bci: buffer: %#llx, code_size: %d\n", | |
| 800 buffer, (int) code_size); | |
| 801 } | |
| 802 | |
| 803 while (read_pair(J, &buffer, &stream_bci, &stream_line) == 0) { | |
| 804 if (stream_bci == vf->bci) { | |
| 805 /* perfect match */ | |
| 806 if (debug > 2) | |
| 807 fprintf(stderr, "\t line_number_from_bci: END: exact line: %ld \n\n", vf->line); | |
| 808 vf->line = stream_line; | |
| 809 return PS_OK; | |
| 810 } else { | |
| 811 /* update best_bci/line */ | |
| 812 if (stream_bci < vf->bci && stream_bci >= best_bci) { | |
| 813 best_bci = stream_bci; | |
| 814 vf->line = stream_line; | |
| 815 if (debug > 2) { | |
| 816 fprintf(stderr, "\t line_number_from_bci: best_bci: %ld, best_line: %ld\n", | |
| 817 best_bci, vf->line); | |
| 818 } | |
| 819 } | |
| 820 } | |
| 821 } | |
| 822 if (debug > 2) | |
| 823 fprintf(stderr, "\t line_number_from_bci: END: line: %ld \n\n", vf->line); | |
| 824 return PS_OK; | |
| 825 | |
| 826 fail: | |
| 827 if (debug) | |
| 828 fprintf(stderr, "\t line_number_from_bci: FAIL\n"); | |
| 829 return err; | |
| 830 } | |
| 831 | |
| 832 static int | |
| 833 get_real_pc(Nmethod_t *N, uint64_t pc_desc, uint64_t *real_pc) | |
| 834 { | |
| 835 int32_t pc_offset; | |
| 836 int32_t err; | |
| 837 | |
| 838 err = ps_pread(N->J->P, pc_desc + OFFSET_PcDesc_pc_offset, &pc_offset, SZ32); | |
| 839 CHECK_FAIL(err); | |
| 840 | |
| 841 *real_pc = N->nm + N->instrs_beg + pc_offset; | |
| 842 if (debug > 2) { | |
| 843 fprintf(stderr, "\t\t get_real_pc: pc_offset: %lx, real_pc: %llx\n", | |
| 844 pc_offset, *real_pc); | |
| 845 } | |
| 846 return PS_OK; | |
| 847 | |
| 848 fail: | |
| 849 return err; | |
| 850 } | |
| 851 | |
| 852 /* Finds a PcDesc with real-pc equal to N->pc */ | |
| 853 static int pc_desc_at(Nmethod_t *N) | |
| 854 { | |
| 855 uint64_t pc_diff; | |
| 856 int32_t offs; | |
| 857 int32_t err; | |
| 858 | |
| 859 if (debug > 2) | |
| 860 fprintf(stderr, "\t pc_desc_at: BEGIN\n"); | |
| 861 | |
| 862 N->vf_cnt = 0; | |
| 863 N->pc_desc = 0; | |
| 864 | |
| 865 for (offs = N->scopes_pcs_beg; offs < N->scopes_pcs_end; offs += SIZE_PcDesc) { | |
| 866 uint64_t pd; | |
| 867 uint64_t best_pc_diff = 16; /* some approximation */ | |
| 868 uint64_t real_pc = 0; | |
| 869 | |
| 870 pd = N->nm + offs; | |
| 871 err = get_real_pc(N, pd, &real_pc); | |
| 872 CHECK_FAIL(err); | |
| 873 | |
| 874 pc_diff = real_pc - N->pc; | |
| 875 | |
| 876 /* In general, this fragment should work */ | |
| 877 if (pc_diff == 0) { | |
| 878 N->pc_desc = pd; | |
| 879 if (debug) { | |
| 880 fprintf(stderr, "\t pc_desc_at: END: pc_desc: FOUND: %#lx \n\n", pd); | |
| 881 } | |
| 882 return PS_OK; | |
| 883 } | |
| 884 /* This fragment is to be able to find out an appropriate | |
| 885 * pc_desc entry even if pc_desc info is inaccurate. | |
| 886 */ | |
| 887 if (best_pc_diff > pc_diff && pc_diff > 0) { | |
| 888 best_pc_diff = pc_diff; | |
| 889 N->pc_desc = pd; | |
| 890 } | |
| 891 } | |
| 892 if (debug) { | |
| 893 fprintf(stderr, "\t pc_desc_at: END: pc_desc NOT FOUND"); | |
| 894 if (pc_diff < 20) | |
| 895 fprintf(stderr, ", best pc_diff: %d\n\n", pc_diff); | |
| 896 else | |
| 897 fprintf(stderr, "\n\n"); | |
| 898 } | |
| 899 return PS_OK; | |
| 900 | |
| 901 fail: | |
| 902 return err; | |
| 903 } | |
| 904 | |
| 905 static int | |
| 906 scope_desc_at(Nmethod_t *N, int32_t decode_offset, Vframe_t *vf) | |
| 907 { | |
| 908 uint64_t buffer; | |
| 909 int32_t err; | |
| 910 | |
| 911 if (debug > 2) { | |
| 912 fprintf(stderr, "\t\t scope_desc_at: BEGIN \n"); | |
| 913 } | |
| 914 | |
| 915 buffer = N->nm + N->scopes_data_beg + decode_offset; | |
| 916 | |
| 917 err = raw_read_int(N->J, &buffer, &vf->sender_decode_offset); | |
| 918 CHECK_FAIL(err); | |
| 919 | |
| 920 err = raw_read_int(N->J, &buffer, &vf->methodIdx); | |
| 921 CHECK_FAIL(err); | |
| 922 | |
| 923 err = raw_read_int(N->J, &buffer, &vf->bci); | |
| 924 CHECK_FAIL(err); | |
| 925 | |
| 926 if (debug > 2) { | |
| 927 fprintf(stderr, "\t\t scope_desc_at: sender_decode_offset: %#x\n", | |
| 928 vf->sender_decode_offset); | |
| 929 fprintf(stderr, "\t\t scope_desc_at: methodIdx: %d\n", vf->methodIdx); | |
| 930 fprintf(stderr, "\t\t scope_desc_at: bci: %d\n", vf->bci); | |
| 931 | |
| 932 fprintf(stderr, "\t\t scope_desc_at: END \n\n"); | |
| 933 } | |
| 934 return PS_OK; | |
| 935 | |
| 936 fail: | |
| 937 return err; | |
| 938 } | |
| 939 | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
940 static int scopeDesc_chain(Nmethod_t *N) { |
| 0 | 941 int32_t decode_offset = 0; |
| 942 int32_t err; | |
| 943 | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
944 if (debug > 2) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
945 fprintf(stderr, "\t scopeDesc_chain: BEGIN\n"); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
946 } |
| 0 | 947 |
| 948 err = ps_pread(N->J->P, N->pc_desc + OFFSET_PcDesc_scope_decode_offset, | |
| 949 &decode_offset, SZ32); | |
| 950 CHECK_FAIL(err); | |
| 951 | |
| 952 while (decode_offset > 0) { | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
953 Vframe_t *vf = &N->vframes[N->vf_cnt]; |
| 0 | 954 |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
955 if (debug > 2) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
956 fprintf(stderr, "\t scopeDesc_chain: decode_offset: %#x\n", decode_offset); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
957 } |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
958 |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
959 err = scope_desc_at(N, decode_offset, vf); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
960 CHECK_FAIL(err); |
| 0 | 961 |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
962 if (vf->methodIdx > N->oops_len) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
963 fprintf(stderr, "\t scopeDesc_chain: (methodIdx > oops_len) !\n"); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
964 return -1; |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
965 } |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
966 err = read_pointer(N->J, N->nm + N->oops_beg + (vf->methodIdx-1)*POINTER_SIZE, |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
967 &vf->methodOop); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
968 CHECK_FAIL(err); |
| 0 | 969 |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
970 if (vf->methodOop) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
971 N->vf_cnt++; |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
972 err = line_number_from_bci(N->J, vf); |
| 0 | 973 CHECK_FAIL(err); |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
974 if (debug > 2) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
975 fprintf(stderr, "\t scopeDesc_chain: methodOop: %#8llx, line: %ld\n", |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
976 vf->methodOop, vf->line); |
| 0 | 977 } |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
978 } |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
979 decode_offset = vf->sender_decode_offset; |
| 0 | 980 } |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
981 if (debug > 2) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
982 fprintf(stderr, "\t scopeDesc_chain: END \n\n"); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
983 } |
| 0 | 984 return PS_OK; |
| 985 | |
| 986 fail: | |
|
1123
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
987 if (debug) { |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
988 fprintf(stderr, "\t scopeDesc_chain: FAIL \n\n"); |
|
167c2986d91b
6843629: Make current hotspot build part of jdk5 control build
phh
parents:
844
diff
changeset
|
989 } |
| 0 | 990 return err; |
| 991 } | |
| 992 | |
| 993 | |
| 994 static int | |
| 995 name_for_nmethod(jvm_agent_t* J, | |
| 996 uint64_t nm, | |
| 997 uint64_t pc, | |
| 998 uint64_t methodOop, | |
| 999 char *result, | |
| 1000 size_t size, | |
| 1001 Jframe_t *jframe | |
| 1002 ) { | |
| 1003 Nmethod_t *N; | |
| 1004 Vframe_t *vf; | |
| 1005 int32_t err; | |
| 1006 int deoptimized = 0; | |
| 1007 | |
| 1008 if (debug) { | |
| 1009 fprintf(stderr, "name_for_nmethod: BEGIN: nmethod: %#llx, pc: %#llx\n", nm, pc); | |
| 1010 } | |
| 1011 if (J->N == NULL) { | |
| 1012 J->N = (Nmethod_t *) malloc(sizeof(Nmethod_t)); | |
| 1013 } | |
| 1014 memset(J->N, 0, sizeof(Nmethod_t)); /* Initial stat: all values are zeros */ | |
| 1015 N = J->N; | |
| 1016 N->J = J; | |
| 1017 N->nm = nm; | |
| 1018 N->pc = pc; | |
| 1019 N->jframe = jframe; | |
| 1020 | |
| 1021 err = nmethod_info(N); | |
| 1022 CHECK_FAIL(err); | |
| 1023 if (debug) { | |
| 1024 fprintf(stderr, "name_for_nmethod: pc: %#llx, deopt_pc: %#llx\n", | |
| 1025 pc, N->nm + N->deopt_beg); | |
| 1026 } | |
| 1027 | |
| 1028 /* check for a deoptimized frame */ | |
| 1029 if ( pc == N->nm + N->deopt_beg) { | |
| 1030 uint64_t base; | |
| 1031 if (debug) { | |
| 1032 fprintf(stderr, "name_for_nmethod: found deoptimized frame\n"); | |
| 1033 } | |
| 1034 if (J->prev_fr.sender_sp != 0) { | |
| 1035 base = J->prev_fr.sender_sp + N->orig_pc_offset; | |
| 1036 } else { | |
| 1037 base = J->curr_fr.sp + N->orig_pc_offset; | |
| 1038 } | |
| 1039 err = read_pointer(J, base, &N->pc); | |
| 1040 CHECK_FAIL(err); | |
| 1041 if (debug) { | |
| 1042 fprintf(stderr, "name_for_nmethod: found deoptimized frame converting pc from %#8llx to %#8llx\n", | |
| 1043 pc, N->pc); | |
| 1044 } | |
| 1045 deoptimized = 1; | |
| 1046 } | |
| 1047 | |
| 1048 err = pc_desc_at(N); | |
| 1049 CHECK_FAIL(err); | |
| 1050 | |
| 1051 if (N->pc_desc > 0) { | |
| 1052 jframe->locinf = 1; | |
| 1053 err = scopeDesc_chain(N); | |
| 1054 CHECK_FAIL(err); | |
| 1055 } | |
| 1056 result[0] = COMP_METHOD_SIGN; | |
| 1057 vf = &N->vframes[0]; | |
| 1058 if (N->vf_cnt > 0) { | |
| 1059 jframe->vf_cnt = N->vf_cnt; | |
| 1060 jframe->bci = vf->bci; | |
| 1061 jframe->line = vf->line; | |
| 1062 err = name_for_methodOop(J, N->vframes[0].methodOop, result+1, size-1); | |
| 1063 CHECK_FAIL(err); | |
| 1064 } else { | |
| 1065 err = name_for_methodOop(J, methodOop, result+1, size-1); | |
| 1066 CHECK_FAIL(err); | |
| 1067 } | |
| 1068 if (deoptimized) { | |
| 1069 strncat(result + 1, " [deoptimized frame]; ", size-1); | |
| 1070 } else { | |
| 1071 strncat(result + 1, " [compiled] ", size-1); | |
| 1072 } | |
| 1073 if (debug) | |
| 1074 fprintf(stderr, "name_for_nmethod: END: method name: %s, vf_cnt: %d\n\n", | |
| 1075 result, N->vf_cnt); | |
| 1076 return PS_OK; | |
| 1077 | |
| 1078 fail: | |
| 1079 if (debug) | |
| 1080 fprintf(stderr, "name_for_nmethod: FAIL \n\n"); | |
| 1081 return err; | |
| 1082 } | |
| 1083 | |
| 1084 int is_bci(intptr_t bcx) { | |
| 1085 switch (DATA_MODEL) { | |
| 1086 case PR_MODEL_LP64: | |
| 1087 return ((uintptr_t) bcx) <= ((uintptr_t) MAX_METHOD_CODE_SIZE) ; | |
| 1088 case PR_MODEL_ILP32: | |
| 1089 default: | |
| 1090 return 0 <= bcx && bcx <= MAX_METHOD_CODE_SIZE; | |
| 1091 } | |
| 1092 } | |
| 1093 | |
| 1094 static int | |
| 1095 name_for_imethod(jvm_agent_t* J, | |
| 1096 uint64_t bcx, | |
| 1097 uint64_t methodOop, | |
| 1098 char *result, | |
| 1099 size_t size, | |
| 1100 Jframe_t *jframe | |
| 1101 ) { | |
| 1102 uint64_t bci; | |
| 1103 uint64_t constMethod; | |
| 1104 Vframe_t vframe = {0}; | |
| 1105 Vframe_t *vf = &vframe; | |
| 1106 int32_t err; | |
| 1107 | |
| 1108 err = read_pointer(J, methodOop + OFFSET_methodOopDesc_constMethod, &constMethod); | |
| 1109 CHECK_FAIL(err); | |
| 1110 | |
| 1111 bci = is_bci(bcx) ? bcx : bcx - (constMethod + (uint64_t) SIZE_constMethodOopDesc); | |
| 1112 | |
| 1113 if (debug) | |
| 1114 fprintf(stderr, "\t name_for_imethod: BEGIN: methodOop: %#llx\n", methodOop); | |
| 1115 | |
| 1116 err = name_for_methodOop(J, methodOop, result, size); | |
| 1117 CHECK_FAIL(err); | |
| 1118 if (debug) | |
| 1119 fprintf(stderr, "\t name_for_imethod: method name: %s\n", result); | |
| 1120 | |
| 1121 if (bci > 0) { | |
| 1122 vf->methodOop = methodOop; | |
| 1123 vf->bci = bci; | |
| 1124 err = line_number_from_bci(J, vf); | |
| 1125 CHECK_FAIL(err); | |
| 1126 } | |
| 1127 jframe->bci = vf->bci; | |
| 1128 jframe->line = vf->line; | |
| 1129 jframe->locinf = 1; | |
| 1130 | |
| 1131 if (debug) { | |
| 1132 fprintf(stderr, "\t name_for_imethod: END: bci: %d, line: %d\n\n", | |
| 1133 vf->bci, vf->line); | |
| 1134 } | |
| 1135 return PS_OK; | |
| 1136 | |
| 1137 fail: | |
| 1138 if (debug) | |
| 1139 fprintf(stderr, "\t name_for_imethod: FAIL\n"); | |
| 1140 return err; | |
| 1141 } | |
| 1142 | |
| 1143 static int | |
| 1144 name_for_codecache(jvm_agent_t* J, uint64_t fp, uint64_t pc, char * result, | |
| 1145 size_t size, Jframe_t *jframe, int* is_interpreted) | |
| 1146 { | |
| 1147 uint64_t start; | |
| 1148 uint64_t vtbl; | |
| 1149 int32_t err; | |
| 1150 *is_interpreted = 0; | |
| 1151 | |
| 1152 result[0] = '\0'; | |
| 1153 | |
| 1154 err = find_start(J, pc, &start); | |
| 1155 CHECK_FAIL(err); | |
| 1156 | |
| 1157 err = read_pointer(J, start, &vtbl); | |
| 1158 CHECK_FAIL(err); | |
| 1159 | |
| 1160 if (vtbl == J->nmethod_vtbl) { | |
| 1161 uint64_t methodOop; | |
| 1162 | |
| 1163 err = read_pointer(J, start + OFFSET_nmethod_method, &methodOop); | |
| 1164 CHECK_FAIL(err); | |
| 1165 | |
| 1166 if (debug) { | |
| 1167 fprintf(stderr, "name_for_codecache: start: %#8llx, pc: %#8llx, methodOop: %#8llx \n", | |
| 1168 start, pc, methodOop); | |
| 1169 } | |
| 1170 err = name_for_nmethod(J, start, pc, methodOop, result, size, jframe); | |
| 1171 CHECK_FAIL(err); | |
| 1172 } else if (vtbl == J->BufferBlob_vtbl) { | |
| 1173 const char * name; | |
| 1174 | |
| 1175 err = read_string_pointer(J, start + OFFSET_CodeBlob_name, &name); | |
| 1176 | |
| 1177 /* | |
| 1178 * Temporary usage of string "Interpreter". | |
| 1179 * We need some other way to distinguish "StubRoutines" | |
| 1180 * and regular interpreted frames. | |
| 1181 */ | |
| 1182 if (err == PS_OK && strncmp(name, "Interpreter", 11) == 0) { | |
| 1183 *is_interpreted = 1; | |
| 1184 if (is_methodOop(J, J->methodOopPtr)) { | |
| 1185 return name_for_imethod(J, J->bcx, J->methodOopPtr, result, size, jframe); | |
| 1186 } | |
| 1187 } | |
| 1188 | |
| 1189 if (err == PS_OK) { | |
| 1190 strncpy(result, name, size); | |
| 1191 free((void*)name); | |
| 1192 } else { | |
| 1193 strncpy(result, "<unknown BufferBlob>", size); | |
| 1194 } | |
| 1195 /* return PS_OK; */ | |
| 1196 } else { | |
| 1197 const char * name; | |
| 1198 | |
| 1199 err = read_string_pointer(J, start + OFFSET_CodeBlob_name, &name); | |
| 1200 if (err == PS_OK) { | |
| 1201 strncpy(result, name, size); | |
| 1202 free((void*)name); | |
| 1203 } else { | |
| 1204 strncpy(result, "<unknown CodeBlob>", size); | |
| 1205 WARN1("unknown CodeBlob: vtbl = 0x%x", vtbl); | |
| 1206 } | |
| 1207 } | |
| 1208 result[size-1] = '\0'; | |
| 1209 | |
| 1210 #ifdef X86_COMPILER2 | |
| 1211 if (vtbl != J->RuntimeStub_vtbl) { | |
| 1212 uint64_t trial_pc; | |
| 1213 int frame_size; | |
| 1214 err = ps_pread(J->P, start + OFFSET_CodeBlob_frame_size, | |
| 1215 &frame_size, SZ32); | |
| 1216 CHECK_FAIL(err); | |
| 1217 | |
| 1218 // frame_size is in words, we want bytes. | |
| 1219 frame_size *= POINTER_SIZE; /* word => byte conversion */ | |
| 1220 | |
| 1221 /* | |
| 1222 Because c2 doesn't use FP as a framepointer the value of sp/fp we receive | |
| 1223 in the initial entry to a set of stack frames containing server frames | |
| 1224 will pretty much be nonsense. We can detect that nonsense by looking to | |
| 1225 see if the PC we received is correct if we look at the expected storage | |
| 1226 location in relation to the FP (ie. POINTER_SIZE(FP) ) | |
| 1227 */ | |
| 1228 | |
| 1229 err = read_pointer(J, fp + POINTER_SIZE , &trial_pc); | |
| 1230 if ( (err != PS_OK || trial_pc != pc) && frame_size > 0 ) { | |
| 1231 // Either we couldn't even read at the "fp" or the pc didn't match | |
| 1232 // both are sure clues that the fp is bogus. We no search the stack | |
| 1233 // for a reasonable number of words trying to find the bogus fp | |
| 1234 // and the current pc in adjacent words. The we will be able to | |
| 1235 // deduce an approximation of the frame pointer and actually get | |
| 1236 // the correct stack pointer. Which we can then unwind for the | |
| 1237 // next frame. | |
| 1238 int i; | |
| 1239 uint64_t check; | |
| 1240 uint64_t base = J->curr_fr.sp; | |
| 1241 uint64_t prev_fp = 0; | |
| 1242 for ( i = 0; i < frame_size * 5 ; i++, base += POINTER_SIZE ) { | |
| 1243 err = read_pointer(J, base , &check); | |
| 1244 CHECK_FAIL(err); | |
| 1245 if (check == fp) { | |
| 1246 base += POINTER_SIZE; | |
| 1247 err = read_pointer(J, base , &check); | |
| 1248 CHECK_FAIL(err); | |
| 1249 if (check == pc) { | |
| 1250 if (debug) { | |
| 1251 fprintf(stderr, "name_for_codecache: found matching fp/pc combo at 0x%llx\n", base - POINTER_SIZE); | |
| 1252 } | |
| 1253 prev_fp = base - 2 * POINTER_SIZE; | |
| 1254 break; | |
| 1255 } | |
| 1256 } | |
| 1257 } | |
| 1258 if ( prev_fp != 0 ) { | |
| 1259 // real_sp is the sp we should have received for this frame | |
| 1260 uint64_t real_sp = prev_fp + 2 * POINTER_SIZE; | |
| 1261 // +POINTER_SIZE because callee owns the return address so caller's sp is +1 word | |
| 1262 jframe->new_sp = real_sp + frame_size + POINTER_SIZE; | |
| 1263 err = read_pointer(J, jframe->new_sp - POINTER_SIZE , &jframe->new_pc); | |
| 1264 CHECK_FAIL(err); | |
| 1265 err = read_pointer(J, jframe->new_sp - 2*POINTER_SIZE, &jframe->new_fp); | |
| 1266 CHECK_FAIL(err); | |
| 1267 return PS_OK; | |
| 1268 } | |
| 1269 } | |
| 1270 | |
| 1271 /* A prototype to workaround FP absence */ | |
| 1272 /* | |
| 1273 * frame_size can be 0 for StubRoutines (1) frame. | |
| 1274 * In this case it should work with fp as usual. | |
| 1275 */ | |
| 1276 if (frame_size > 0) { | |
| 1277 jframe->new_fp = J->prev_fr.fp + frame_size; | |
| 1278 jframe->new_sp = jframe->new_fp + 2 * POINTER_SIZE; | |
| 1279 } else { | |
| 1280 memset(&J->curr_fr, 0, sizeof(Frame_t)); | |
| 1281 err = read_pointer(J, fp, &jframe->new_fp); | |
| 1282 CHECK_FAIL(err); | |
| 1283 | |
| 1284 err = read_pointer(J, jframe->new_fp + POINTER_SIZE, &jframe->new_pc); | |
| 1285 CHECK_FAIL(err); | |
| 1286 } | |
| 1287 if (debug) { | |
| 1288 fprintf(stderr, "name_for_codecache: %s, frame_size=%#lx\n", | |
| 1289 result, frame_size); | |
| 1290 fprintf(stderr, "name_for_codecache: prev_fr.fp=%#lx, fp=%#lx\n", | |
| 1291 J->prev_fr.fp, jframe->new_fp); | |
| 1292 } | |
| 1293 } | |
| 1294 #endif /* X86_COMPILER2 */ | |
| 1295 | |
| 1296 return PS_OK; | |
| 1297 | |
| 1298 fail: | |
| 1299 return err; | |
| 1300 } | |
| 1301 | |
| 1302 int Jget_vframe(jvm_agent_t* J, int vframe_no, | |
| 1303 char *name, size_t size, Jframe_t *jframe) | |
| 1304 { | |
| 1305 Nmethod_t *N = J->N; | |
| 1306 Vframe_t *vf; | |
| 1307 int32_t err; | |
| 1308 | |
| 1309 if (vframe_no >= N->vf_cnt) { | |
| 1310 (void) sprintf(name, "Wrong inlinedMethod%1d()", vframe_no); | |
| 1311 return -1; | |
| 1312 } | |
| 1313 vf = N->vframes + vframe_no; | |
| 1314 name[0] = COMP_METHOD_SIGN; | |
| 1315 err = name_for_methodOop(J, vf->methodOop, name + 1, size); | |
| 1316 CHECK_FAIL(err); | |
| 1317 | |
| 1318 jframe->bci = vf->bci; | |
| 1319 jframe->line = vf->line; | |
| 1320 if (debug) { | |
| 1321 fprintf(stderr, "\t Jget_vframe: method name: %s, line: %ld\n", | |
| 1322 name, vf->line); | |
| 1323 } | |
| 1324 return PS_OK; | |
| 1325 | |
| 1326 fail: | |
| 1327 if (debug) { | |
| 1328 fprintf(stderr, "\t Jget_vframe: FAIL\n"); | |
| 1329 } | |
| 1330 return err; | |
| 1331 } | |
| 1332 | |
| 1333 #define MAX_SYM_SIZE 256 | |
| 1334 | |
| 1335 int Jlookup_by_regs(jvm_agent_t* J, const prgregset_t regs, char *name, | |
| 1336 size_t size, Jframe_t *jframe) { | |
| 1337 uintptr_t fp; | |
| 1338 uintptr_t pc; | |
| 1339 /* arguments given to read_pointer need to be worst case sized */ | |
| 1340 uint64_t methodOopPtr = 0; | |
| 1341 uint64_t sender_sp; | |
| 1342 uint64_t bcx = 0; | |
| 1343 int is_interpreted = 0; | |
| 1344 int result = PS_OK; | |
| 1345 int err = PS_OK; | |
| 1346 | |
| 1347 if (J == NULL) { | |
| 1348 return -1; | |
| 1349 } | |
| 1350 | |
| 1351 jframe->vf_cnt = 1; | |
| 1352 jframe->new_fp = 0; | |
| 1353 jframe->new_pc = 0; | |
| 1354 jframe->line = 0; | |
| 1355 jframe->bci = 0; | |
| 1356 jframe->locinf = 0; | |
| 1357 | |
| 1358 read_volatiles(J); | |
| 1359 pc = (uintptr_t) regs[R_PC]; | |
| 1360 J->curr_fr.pc = pc; | |
| 1361 J->curr_fr.fp = regs[R_FP]; | |
| 1362 J->curr_fr.sp = regs[R_SP]; | |
| 1363 | |
| 1364 if (debug) | |
| 1365 fprintf(stderr, "Jlookup_by_regs: BEGINs: fp=%#lx, pc=%#lx\n", regs[R_FP], pc); | |
| 1366 | |
| 1367 #if defined(sparc) || defined(__sparc) | |
| 1368 /* The following workaround is for SPARC. CALL instruction occupates 8 bytes. | |
| 1369 * In the pcDesc structure return pc offset is recorded for CALL instructions. | |
| 1370 * regs[R_PC] contains a CALL instruction pc offset. | |
| 1371 */ | |
| 1372 pc += 8; | |
| 1373 bcx = (uintptr_t) regs[R_L1]; | |
| 1374 methodOopPtr = (uintptr_t) regs[R_L2]; | |
| 1375 sender_sp = regs[R_I5]; | |
| 1376 if (debug > 2) { | |
| 1377 fprintf(stderr, "\nregs[R_I1]=%lx, regs[R_I2]=%lx, regs[R_I5]=%lx, regs[R_L1]=%lx, regs[R_L2]=%lx\n", | |
| 1378 regs[R_I1], regs[R_I2], regs[R_I5], regs[R_L1], regs[R_L2]); | |
| 1379 } | |
| 1380 #elif defined(i386) || defined(__i386) || defined(__amd64) | |
| 1381 | |
| 1382 fp = (uintptr_t) regs[R_FP]; | |
| 1383 if (J->prev_fr.fp == 0) { | |
| 1384 #ifdef X86_COMPILER2 | |
| 1385 /* A workaround for top java frames */ | |
| 1386 J->prev_fr.fp = (uintptr_t)(regs[R_SP] - 2 * POINTER_SIZE); | |
| 1387 #else | |
| 1388 J->prev_fr.fp = (uintptr_t)(regs[R_SP] - POINTER_SIZE); | |
| 1389 #endif /* COMPILER2 */ | |
| 1390 } | |
| 1391 if (debug > 2) { | |
| 1392 printf("Jlookup_by_regs: J->prev_fr.fp = %#lx\n", J->prev_fr.fp); | |
| 1393 } | |
| 1394 | |
| 1395 if (read_pointer(J, fp + OFFSET_interpreter_frame_method, &methodOopPtr) != PS_OK) { | |
| 1396 methodOopPtr = 0; | |
| 1397 } | |
| 1398 if (read_pointer(J, fp + OFFSET_interpreter_frame_sender_sp, &sender_sp) != PS_OK) { | |
| 1399 sender_sp = 0; | |
| 1400 } | |
| 1401 if (read_pointer(J, fp + OFFSET_interpreter_frame_bcx_offset, &bcx) != PS_OK) { | |
| 1402 bcx = 0; | |
| 1403 } | |
| 1404 #endif /* i386 */ | |
| 1405 | |
| 1406 J->methodOopPtr = methodOopPtr; | |
| 1407 J->bcx = bcx; | |
| 1408 | |
| 1409 /* On x86 with C2 JVM: native frame may have wrong regs[R_FP] | |
| 1410 * For example: JVM_SuspendThread frame poins to the top interpreted frame. | |
| 1411 * If we call is_methodOop(J, methodOopPtr) before codecache_contains(J, pc) | |
| 1412 * then we go over and omit both: nmethod and I2CAdapter frames. | |
| 1413 * Note, that regs[R_PC] is always correct if frame defined correctly. | |
| 1414 * So it is better to call codecache_contains(J, pc) from the beginning. | |
| 1415 */ | |
| 1416 #ifndef X86_COMPILER2 | |
| 1417 if (is_methodOop(J, J->methodOopPtr)) { | |
| 1418 result = name_for_imethod(J, bcx, J->methodOopPtr, name, size, jframe); | |
| 1419 /* If the methodOopPtr is a method then this is highly likely to be | |
| 1420 an interpreter frame */ | |
| 1421 if (result >= 0) { | |
| 1422 is_interpreted = 1; | |
| 1423 } | |
| 1424 } else | |
| 1425 #endif /* ! X86_COMPILER2 */ | |
| 1426 | |
| 1427 if (codecache_contains(J, pc)) { | |
| 1428 result = name_for_codecache(J, fp, pc, name, size, jframe, &is_interpreted); | |
| 1429 } | |
| 1430 #ifdef X86_COMPILER2 | |
| 1431 else if (is_methodOop(J, J->methodOopPtr)) { | |
| 1432 result = name_for_imethod(J, bcx, J->methodOopPtr, name, size, jframe); | |
| 1433 /* If the methodOopPtr is a method then this is highly likely to be | |
| 1434 an interpreter frame */ | |
| 1435 if (result >= 0) { | |
| 1436 is_interpreted = 1; | |
| 1437 } | |
| 1438 } | |
| 1439 #endif /* X86_COMPILER2 */ | |
| 1440 else { | |
| 1441 if (debug) { | |
| 1442 fprintf(stderr, "Jlookup_by_regs: END with -1\n\n"); | |
| 1443 } | |
| 1444 result = -1; | |
| 1445 } | |
| 1446 if (!is_interpreted) { | |
| 1447 sender_sp = 0; | |
| 1448 } | |
| 1449 J->curr_fr.sender_sp = sender_sp; | |
| 1450 | |
| 1451 #ifdef X86_COMPILER2 | |
| 1452 if (!J->curr_fr.fp) { | |
| 1453 J->curr_fr.fp = (jframe->new_fp) ? jframe->new_fp : (uintptr_t)regs[R_FP]; | |
| 1454 } | |
| 1455 if (!jframe->new_pc && jframe->new_fp) { | |
| 1456 // This seems dubious | |
| 1457 read_pointer(J, jframe->new_fp + POINTER_SIZE, &jframe->new_pc); | |
| 1458 CHECK_FAIL(err); | |
| 1459 if (debug > 2) { | |
| 1460 printf("Jlookup_by_regs: (update pc) jframe->new_fp: %#llx, jframe->new_pc: %#llx\n", | |
| 1461 jframe->new_fp, jframe->new_pc); | |
| 1462 } | |
| 1463 } | |
| 1464 | |
| 1465 #endif /* X86_COMPILER2 */ | |
| 1466 J->prev_fr = J->curr_fr; | |
| 1467 | |
| 1468 if (debug) | |
| 1469 fprintf(stderr, "Jlookup_by_regs: END\n\n"); | |
| 1470 | |
| 1471 return result; | |
| 1472 | |
| 1473 fail: | |
| 1474 return err; | |
| 1475 } | |
| 1476 | |
| 1477 void update_gregs(prgregset_t gregs, Jframe_t jframe) { | |
| 1478 #ifdef X86_COMPILER2 | |
| 1479 if (debug > 0) { | |
| 1480 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]); | |
| 1481 } | |
| 1482 /* | |
| 1483 * A workaround for java C2 frames with unconventional FP. | |
| 1484 * may have to modify regset with new values for FP/PC/SP when needed. | |
| 1485 */ | |
| 1486 if (jframe.new_sp) { | |
| 1487 *((uintptr_t *) &gregs[R_SP]) = (uintptr_t) jframe.new_sp; | |
| 1488 } else { | |
| 1489 // *((uintptr_t *) &gregs[R_SP]) = (uintptr_t) gregs[R_FP] + 2 * POINTER_SIZE; | |
| 1490 } | |
| 1491 | |
| 1492 if (jframe.new_fp) { | |
| 1493 *((uintptr_t *) &gregs[R_FP]) = (uintptr_t) jframe.new_fp; | |
| 1494 } | |
| 1495 if (jframe.new_pc) { | |
| 1496 *((uintptr_t *) &gregs[R_PC]) = (uintptr_t) jframe.new_pc; | |
| 1497 } | |
| 1498 if (debug > 0) { | |
| 1499 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]); | |
| 1500 } | |
| 1501 #endif /* X86_COMPILER2 */ | |
| 1502 } | |
| 1503 | |
| 1504 /* | |
| 1505 * Iterates over java frames at current location given by 'gregs'. | |
| 1506 * | |
| 1507 * Returns -1 if no java frames are present or if an error is encountered. | |
| 1508 * Returns the result of calling 'func' if the return value is non-zero. | |
| 1509 * Returns 0 otherwise. | |
| 1510 */ | |
| 1511 int Jframe_iter(jvm_agent_t *J, prgregset_t gregs, java_stack_f *func, void* cld) { | |
| 1512 char buf[MAX_SYM_SIZE + 1]; | |
| 1513 Jframe_t jframe; | |
| 1514 int i = 0, res; | |
| 1515 #ifdef X86_COMPILER2 | |
| 1516 if (debug > 0) { | |
| 1517 fprintf(stderr, "Jframe_iter: Entry sp = 0x%llx, fp = 0x%llx, pc = 0x%llx\n", gregs[R_SP], gregs[R_FP], gregs[R_PC]); | |
| 1518 } | |
| 1519 #endif /* X86_COMPILER2 */ | |
| 1520 | |
| 1521 memset(&jframe, 0, sizeof(Jframe_t)); | |
| 1522 memset(buf, 0, sizeof(buf)); | |
| 1523 res = Jlookup_by_regs(J, gregs, buf, sizeof(buf), &jframe); | |
| 1524 if (res != PS_OK) | |
| 1525 return (-1); | |
| 1526 | |
| 1527 | |
| 1528 res = func(cld, gregs, buf, (jframe.locinf)? jframe.bci : -1, | |
| 1529 jframe.line, NULL); | |
| 1530 if (res != 0) { | |
| 1531 update_gregs(gregs, jframe); | |
| 1532 return (res); | |
| 1533 } | |
| 1534 for (i = 1; i < jframe.vf_cnt; i++) { | |
| 1535 Jget_vframe(J, i, buf, sizeof(buf), &jframe); | |
| 1536 res = func(cld, gregs, buf, (jframe.locinf)? jframe.bci : -1, | |
| 1537 jframe.line, NULL); | |
| 1538 if (res != 0) { | |
| 1539 update_gregs(gregs, jframe); | |
| 1540 return (res); | |
| 1541 } | |
| 1542 } | |
| 1543 update_gregs(gregs, jframe); | |
| 1544 return (0); | |
| 1545 } |