Mercurial > hg > graal-compiler
annotate src/os/solaris/dtrace/libjvm_db.c @ 6725:da91efe96a93
6964458: Reimplement class meta-data storage to use native memory
Summary: Remove PermGen, allocate meta-data in metaspace linked to class loaders, rewrite GC walking, rewrite and rename metadata to be C++ classes
Reviewed-by: jmasa, stefank, never, coleenp, kvn, brutisso, mgerdin, dholmes, jrose, twisti, roland
Contributed-by: jmasa <jon.masamitsu@oracle.com>, stefank <stefan.karlsson@oracle.com>, mgerdin <mikael.gerdin@oracle.com>, never <tom.rodriguez@oracle.com>
| author | coleenp |
|---|---|
| date | Sat, 01 Sep 2012 13:25:18 -0400 |
| parents | d68b1274b9ba |
| children | fd94cbe7c5da |
| rev | line source |
|---|---|
| 0 | 1 /* |
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2 * Copyright (c) 2003, 2012, 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 * | |
|
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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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 { | |
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104 uint64_t method; |
| 0 | 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 */ | |
| 1748 | 127 int32_t instrs_beg; /* _code_offset */ |
| 0 | 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; | |
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132 int32_t metadata_beg; /* _metadata_offset */ |
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133 int32_t metadata_end; |
| 0 | 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; | |
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148 uint64_t Method_vtbl; |
| 0 | 149 |
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150 uint64_t Use_Compressed_Oops_address; |
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151 uint64_t Universe_narrow_oop_base_address; |
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152 uint64_t Universe_narrow_oop_shift_address; |
| 0 | 153 uint64_t CodeCache_heap_address; |
| 154 | |
| 155 /* Volatiles */ | |
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156 uint8_t Use_Compressed_Oops; |
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157 uint64_t Universe_narrow_oop_base; |
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158 uint32_t Universe_narrow_oop_shift; |
| 0 | 159 uint64_t CodeCache_low; |
| 160 uint64_t CodeCache_high; | |
| 161 uint64_t CodeCache_segmap_low; | |
| 162 uint64_t CodeCache_segmap_high; | |
| 163 | |
| 164 int32_t SIZE_CodeCache_log2_segment; | |
| 165 | |
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166 uint64_t methodPtr; |
| 0 | 167 uint64_t bcx; |
| 168 | |
| 169 Nmethod_t *N; /*Inlined methods support */ | |
| 170 Frame_t prev_fr; | |
| 171 Frame_t curr_fr; | |
| 172 }; | |
| 173 | |
| 174 static int | |
| 175 read_string(struct ps_prochandle *P, | |
| 176 char *buf, /* caller's buffer */ | |
| 177 size_t size, /* upper limit on bytes to read */ | |
| 178 uintptr_t addr) /* address in process */ | |
| 179 { | |
| 180 int err = PS_OK; | |
| 181 while (size-- > 1 && err == PS_OK) { | |
| 182 err = ps_pread(P, addr, buf, 1); | |
| 183 if (*buf == '\0') { | |
| 184 return PS_OK; | |
| 185 } | |
| 186 addr += 1; | |
| 187 buf += 1; | |
| 188 } | |
| 189 return -1; | |
| 190 } | |
| 191 | |
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192 static int read_compressed_pointer(jvm_agent_t* J, uint64_t base, uint32_t *ptr) { |
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193 int err = -1; |
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194 uint32_t ptr32; |
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195 err = ps_pread(J->P, base, &ptr32, sizeof(uint32_t)); |
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196 *ptr = ptr32; |
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197 return err; |
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198 } |
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199 |
| 0 | 200 static int read_pointer(jvm_agent_t* J, uint64_t base, uint64_t* ptr) { |
| 201 int err = -1; | |
| 202 uint32_t ptr32; | |
| 203 | |
| 204 switch (DATA_MODEL) { | |
| 205 case PR_MODEL_LP64: | |
| 206 err = ps_pread(J->P, base, ptr, sizeof(uint64_t)); | |
| 207 break; | |
| 208 case PR_MODEL_ILP32: | |
| 209 err = ps_pread(J->P, base, &ptr32, sizeof(uint32_t)); | |
| 210 *ptr = ptr32; | |
| 211 break; | |
| 212 } | |
| 213 | |
| 214 return err; | |
| 215 } | |
| 216 | |
| 217 static int read_string_pointer(jvm_agent_t* J, uint64_t base, const char ** stringp) { | |
| 218 uint64_t ptr; | |
| 219 int err; | |
| 220 char buffer[1024]; | |
| 221 | |
| 222 *stringp = NULL; | |
| 223 err = read_pointer(J, base, &ptr); | |
| 224 CHECK_FAIL(err); | |
| 225 if (ptr != 0) { | |
| 226 err = read_string(J->P, buffer, sizeof(buffer), ptr); | |
| 227 CHECK_FAIL(err); | |
| 228 *stringp = strdup(buffer); | |
| 229 } | |
| 230 return PS_OK; | |
| 231 | |
| 232 fail: | |
| 233 return err; | |
| 234 } | |
| 235 | |
| 236 static int parse_vmstruct_entry(jvm_agent_t* J, uint64_t base, VMStructEntry* vmp) { | |
| 237 uint64_t ptr; | |
| 238 int err; | |
| 239 | |
| 240 err = read_string_pointer(J, base + OFFSET_VMStructEntrytypeName, &vmp->typeName); | |
| 241 CHECK_FAIL(err); | |
| 242 err = read_string_pointer(J, base + OFFSET_VMStructEntryfieldName, &vmp->fieldName); | |
| 243 CHECK_FAIL(err); | |
| 244 err = read_pointer(J, base + OFFSET_VMStructEntryaddress, &vmp->address); | |
| 245 CHECK_FAIL(err); | |
| 246 | |
| 247 return PS_OK; | |
| 248 | |
| 249 fail: | |
| 250 if (vmp->typeName != NULL) free((void*)vmp->typeName); | |
| 251 if (vmp->fieldName != NULL) free((void*)vmp->fieldName); | |
| 252 return err; | |
| 253 } | |
| 254 | |
| 255 static int parse_vmstructs(jvm_agent_t* J) { | |
| 256 VMStructEntry vmVar; | |
| 257 VMStructEntry* vmp = &vmVar; | |
| 258 uint64_t gHotSpotVMStructs; | |
| 259 psaddr_t sym_addr; | |
| 260 uint64_t base; | |
| 261 int err; | |
| 262 | |
| 263 err = ps_pglobal_lookup(J->P, LIBJVM_SO, "gHotSpotVMStructs", &sym_addr); | |
| 264 CHECK_FAIL(err); | |
| 265 err = read_pointer(J, sym_addr, &gHotSpotVMStructs); | |
| 266 CHECK_FAIL(err); | |
| 267 base = gHotSpotVMStructs; | |
| 268 | |
| 269 err = PS_OK; | |
| 270 while (err == PS_OK) { | |
| 271 memset(vmp, 0, sizeof(VMStructEntry)); | |
| 272 err = parse_vmstruct_entry(J, base, vmp); | |
| 273 if (err != PS_OK || vmp->typeName == NULL) { | |
| 274 break; | |
| 275 } | |
| 276 | |
| 277 if (vmp->typeName[0] == 'C' && strcmp("CodeCache", vmp->typeName) == 0) { | |
| 278 if (strcmp("_heap", vmp->fieldName) == 0) { | |
| 279 err = read_pointer(J, vmp->address, &J->CodeCache_heap_address); | |
| 280 } | |
| 281 } else if (vmp->typeName[0] == 'U' && strcmp("Universe", vmp->typeName) == 0) { | |
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282 if (strcmp("_narrow_oop._base", vmp->fieldName) == 0) { |
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283 J->Universe_narrow_oop_base_address = vmp->address; |
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284 } |
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285 if (strcmp("_narrow_oop._shift", vmp->fieldName) == 0) { |
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286 J->Universe_narrow_oop_shift_address = vmp->address; |
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287 } |
| 0 | 288 } |
| 289 CHECK_FAIL(err); | |
| 290 | |
| 291 base += SIZE_VMStructEntry; | |
| 292 if (vmp->typeName != NULL) free((void*)vmp->typeName); | |
| 293 if (vmp->fieldName != NULL) free((void*)vmp->fieldName); | |
| 294 } | |
| 295 | |
| 296 return PS_OK; | |
| 297 | |
| 298 fail: | |
| 299 if (vmp->typeName != NULL) free((void*)vmp->typeName); | |
| 300 if (vmp->fieldName != NULL) free((void*)vmp->fieldName); | |
| 301 return -1; | |
| 302 } | |
| 303 | |
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304 static int find_symbol(jvm_agent_t* J, const char *name, uint64_t* valuep) { |
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305 psaddr_t sym_addr; |
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306 int err; |
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307 |
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308 err = ps_pglobal_lookup(J->P, LIBJVM_SO, name, &sym_addr); |
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309 if (err != PS_OK) goto fail; |
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310 *valuep = sym_addr; |
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311 return PS_OK; |
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312 |
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313 fail: |
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314 return err; |
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315 } |
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316 |
| 0 | 317 static int read_volatiles(jvm_agent_t* J) { |
| 318 uint64_t ptr; | |
| 319 int err; | |
| 320 | |
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321 err = find_symbol(J, "UseCompressedOops", &J->Use_Compressed_Oops_address); |
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322 if (err == PS_OK) { |
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323 err = ps_pread(J->P, J->Use_Compressed_Oops_address, &J->Use_Compressed_Oops, sizeof(uint8_t)); |
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324 CHECK_FAIL(err); |
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325 } else { |
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326 J->Use_Compressed_Oops = 0; |
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327 } |
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328 |
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329 err = read_pointer(J, J->Universe_narrow_oop_base_address, &J->Universe_narrow_oop_base); |
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330 CHECK_FAIL(err); |
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331 err = ps_pread(J->P, J->Universe_narrow_oop_shift_address, &J->Universe_narrow_oop_shift, sizeof(uint32_t)); |
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332 CHECK_FAIL(err); |
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333 |
| 0 | 334 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_memory + |
| 335 OFFSET_VirtualSpace_low, &J->CodeCache_low); | |
| 336 CHECK_FAIL(err); | |
| 337 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_memory + | |
| 338 OFFSET_VirtualSpace_high, &J->CodeCache_high); | |
| 339 CHECK_FAIL(err); | |
| 340 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_segmap + | |
| 341 OFFSET_VirtualSpace_low, &J->CodeCache_segmap_low); | |
| 342 CHECK_FAIL(err); | |
| 343 err = read_pointer(J, J->CodeCache_heap_address + OFFSET_CodeHeap_segmap + | |
| 344 OFFSET_VirtualSpace_high, &J->CodeCache_segmap_high); | |
| 345 CHECK_FAIL(err); | |
| 346 | |
| 347 err = ps_pread(J->P, J->CodeCache_heap_address + OFFSET_CodeHeap_log2_segment_size, | |
| 348 &J->SIZE_CodeCache_log2_segment, sizeof(J->SIZE_CodeCache_log2_segment)); | |
| 349 CHECK_FAIL(err); | |
| 350 | |
| 351 return PS_OK; | |
| 352 | |
| 353 fail: | |
| 354 return err; | |
| 355 } | |
| 356 | |
| 357 | |
| 358 static int codecache_contains(jvm_agent_t* J, uint64_t ptr) { | |
| 359 /* make sure the code cache is up to date */ | |
| 360 return (J->CodeCache_low <= ptr && ptr < J->CodeCache_high); | |
| 361 } | |
| 362 | |
| 363 static uint64_t segment_for(jvm_agent_t* J, uint64_t p) { | |
| 364 return (p - J->CodeCache_low) >> J->SIZE_CodeCache_log2_segment; | |
| 365 } | |
| 366 | |
| 367 static uint64_t block_at(jvm_agent_t* J, int i) { | |
| 368 return J->CodeCache_low + (i << J->SIZE_CodeCache_log2_segment); | |
| 369 } | |
| 370 | |
| 371 static int find_start(jvm_agent_t* J, uint64_t ptr, uint64_t *startp) { | |
| 372 int err; | |
| 373 | |
| 374 *startp = 0; | |
| 375 if (J->CodeCache_low <= ptr && ptr < J->CodeCache_high) { | |
| 376 int32_t used; | |
| 377 uint64_t segment = segment_for(J, ptr); | |
| 378 uint64_t block = J->CodeCache_segmap_low; | |
| 379 uint8_t tag; | |
| 380 err = ps_pread(J->P, block + segment, &tag, sizeof(tag)); | |
| 381 CHECK_FAIL(err); | |
| 382 if (tag == 0xff) | |
| 383 return PS_OK; | |
| 384 while (tag > 0) { | |
| 385 err = ps_pread(J->P, block + segment, &tag, sizeof(tag)); | |
| 386 CHECK_FAIL(err); | |
| 387 segment -= tag; | |
| 388 } | |
| 389 block = block_at(J, segment); | |
| 390 err = ps_pread(J->P, block + OFFSET_HeapBlockHeader_used, &used, sizeof(used)); | |
| 391 CHECK_FAIL(err); | |
| 392 if (used) { | |
| 393 *startp = block + SIZE_HeapBlockHeader; | |
| 394 } | |
| 395 } | |
| 396 return PS_OK; | |
| 397 | |
| 398 fail: | |
| 399 return -1; | |
| 400 } | |
| 401 | |
| 402 static int find_jlong_constant(jvm_agent_t* J, const char *name, uint64_t* valuep) { | |
| 403 psaddr_t sym_addr; | |
| 404 int err = ps_pglobal_lookup(J->P, LIBJVM_SO, name, &sym_addr); | |
| 405 if (err == PS_OK) { | |
| 406 err = ps_pread(J->P, sym_addr, valuep, sizeof(uint64_t)); | |
| 407 return err; | |
| 408 } | |
| 409 *valuep = -1; | |
| 410 return -1; | |
| 411 } | |
| 412 | |
| 413 jvm_agent_t *Jagent_create(struct ps_prochandle *P, int vers) { | |
| 414 jvm_agent_t* J; | |
| 415 int err; | |
| 416 | |
| 417 if (vers != JVM_DB_VERSION) { | |
| 418 errno = ENOTSUP; | |
| 419 return NULL; | |
| 420 } | |
| 421 | |
| 422 J = (jvm_agent_t*)calloc(sizeof(struct jvm_agent), 1); | |
| 423 | |
| 424 debug = getenv("LIBJVMDB_DEBUG") != NULL; | |
| 425 if (debug) debug = 3; | |
| 426 | |
| 427 if (debug) { | |
| 428 fprintf(stderr, "Jagent_create: debug=%d\n", debug); | |
| 429 #ifdef X86_COMPILER2 | |
| 430 fprintf(stderr, "Jagent_create: R_SP=%d, R_FP=%d, POINTER_SIZE=%d\n", R_SP, R_FP, POINTER_SIZE); | |
| 431 #endif /* X86_COMPILER2 */ | |
| 432 } | |
| 433 | |
| 434 J->P = P; | |
| 435 | |
| 436 // Initialize the initial previous frame | |
| 437 | |
| 438 J->prev_fr.fp = 0; | |
| 439 J->prev_fr.pc = 0; | |
| 440 J->prev_fr.sp = 0; | |
| 441 J->prev_fr.sender_sp = 0; | |
| 442 | |
| 443 err = find_symbol(J, "__1cHnmethodG__vtbl_", &J->nmethod_vtbl); | |
| 444 CHECK_FAIL(err); | |
| 445 err = find_symbol(J, "__1cKBufferBlobG__vtbl_", &J->BufferBlob_vtbl); | |
| 446 if (err != PS_OK) J->BufferBlob_vtbl = 0; | |
| 447 err = find_symbol(J, "__1cICodeBlobG__vtbl_", &J->CodeBlob_vtbl); | |
| 448 CHECK_FAIL(err); | |
| 449 err = find_symbol(J, "__1cLRuntimeStubG__vtbl_", &J->RuntimeStub_vtbl); | |
| 450 CHECK_FAIL(err); | |
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451 err = find_symbol(J, "__1cGMethodG__vtbl_", &J->Method_vtbl); |
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452 CHECK_FAIL(err); |
| 0 | 453 |
| 454 err = parse_vmstructs(J); | |
| 455 CHECK_FAIL(err); | |
| 456 err = read_volatiles(J); | |
| 457 CHECK_FAIL(err); | |
| 458 | |
| 459 return J; | |
| 460 | |
| 461 fail: | |
| 462 Jagent_destroy(J); | |
| 463 return NULL; | |
| 464 } | |
| 465 | |
| 466 void Jagent_destroy(jvm_agent_t *J) { | |
| 467 if (J != NULL) { | |
| 468 free(J); | |
| 469 } | |
| 470 } | |
| 471 | |
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472 static int is_method(jvm_agent_t* J, uint64_t methodPtr) { |
| 0 | 473 uint64_t klass; |
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474 int err = read_pointer(J, methodPtr, &klass); |
| 0 | 475 if (err != PS_OK) goto fail; |
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476 return klass == J->Method_vtbl; |
| 0 | 477 |
| 478 fail: | |
| 479 return 0; | |
| 480 } | |
| 481 | |
| 482 static int | |
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483 name_for_methodPtr(jvm_agent_t* J, uint64_t methodPtr, char * result, size_t size) |
| 0 | 484 { |
| 485 short nameIndex; | |
| 486 short signatureIndex; | |
| 487 uint64_t constantPool; | |
| 488 uint64_t constMethod; | |
| 489 uint64_t nameSymbol; | |
| 490 uint64_t signatureSymbol; | |
| 491 uint64_t klassPtr; | |
| 492 uint64_t klassSymbol; | |
| 493 short klassSymbolLength; | |
| 494 short nameSymbolLength; | |
| 495 short signatureSymbolLength; | |
| 496 char * nameString = NULL; | |
| 497 char * klassString = NULL; | |
| 498 char * signatureString = NULL; | |
| 499 int err; | |
| 500 | |
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501 err = read_pointer(J, methodPtr + OFFSET_Method_constMethod, &constMethod); |
| 0 | 502 CHECK_FAIL(err); |
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503 err = read_pointer(J, constMethod + OFFSET_ConstMethod_constants, &constantPool); |
| 0 | 504 CHECK_FAIL(err); |
| 505 | |
| 506 /* To get name string */ | |
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507 err = ps_pread(J->P, constMethod + OFFSET_ConstMethod_name_index, &nameIndex, 2); |
| 0 | 508 CHECK_FAIL(err); |
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509 err = read_pointer(J, constantPool + nameIndex * POINTER_SIZE + SIZE_ConstantPool, &nameSymbol); |
| 0 | 510 CHECK_FAIL(err); |
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511 // The symbol is a CPSlot and has lower bit set to indicate metadata |
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512 nameSymbol &= (~1); // remove metadata lsb |
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513 err = ps_pread(J->P, nameSymbol + OFFSET_Symbol_length, &nameSymbolLength, 2); |
| 0 | 514 CHECK_FAIL(err); |
| 515 nameString = (char*)calloc(nameSymbolLength + 1, 1); | |
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516 err = ps_pread(J->P, nameSymbol + OFFSET_Symbol_body, nameString, nameSymbolLength); |
| 0 | 517 CHECK_FAIL(err); |
| 518 | |
| 519 /* To get signature string */ | |
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520 err = ps_pread(J->P, constMethod + OFFSET_ConstMethod_signature_index, &signatureIndex, 2); |
| 0 | 521 CHECK_FAIL(err); |
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522 err = read_pointer(J, constantPool + signatureIndex * POINTER_SIZE + SIZE_ConstantPool, &signatureSymbol); |
| 0 | 523 CHECK_FAIL(err); |
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524 signatureSymbol &= (~1); // remove metadata lsb |
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525 err = ps_pread(J->P, signatureSymbol + OFFSET_Symbol_length, &signatureSymbolLength, 2); |
| 0 | 526 CHECK_FAIL(err); |
| 527 signatureString = (char*)calloc(signatureSymbolLength + 1, 1); | |
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528 err = ps_pread(J->P, signatureSymbol + OFFSET_Symbol_body, signatureString, signatureSymbolLength); |
| 0 | 529 CHECK_FAIL(err); |
| 530 | |
| 531 /* To get klass string */ | |
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532 err = read_pointer(J, constantPool + OFFSET_ConstantPool_pool_holder, &klassPtr); |
| 0 | 533 CHECK_FAIL(err); |
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534 err = read_pointer(J, klassPtr + OFFSET_Klass_name, &klassSymbol); |
| 0 | 535 CHECK_FAIL(err); |
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536 err = ps_pread(J->P, klassSymbol + OFFSET_Symbol_length, &klassSymbolLength, 2); |
| 0 | 537 CHECK_FAIL(err); |
| 538 klassString = (char*)calloc(klassSymbolLength + 1, 1); | |
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539 err = ps_pread(J->P, klassSymbol + OFFSET_Symbol_body, klassString, klassSymbolLength); |
| 0 | 540 CHECK_FAIL(err); |
| 541 | |
| 542 result[0] = '\0'; | |
| 543 strncat(result, klassString, size); | |
| 544 size -= strlen(klassString); | |
| 545 strncat(result, ".", size); | |
| 546 size -= 1; | |
| 547 strncat(result, nameString, size); | |
| 548 size -= strlen(nameString); | |
| 549 strncat(result, signatureString, size); | |
| 550 | |
| 551 if (nameString != NULL) free(nameString); | |
| 552 if (klassString != NULL) free(klassString); | |
| 553 if (signatureString != NULL) free(signatureString); | |
| 554 | |
| 555 return PS_OK; | |
| 556 | |
| 557 fail: | |
| 558 if (debug) { | |
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559 fprintf(stderr, "name_for_methodPtr: FAIL \n\n"); |
| 0 | 560 } |
| 561 if (nameString != NULL) free(nameString); | |
| 562 if (klassString != NULL) free(klassString); | |
| 563 if (signatureString != NULL) free(signatureString); | |
| 564 return -1; | |
| 565 } | |
| 566 | |
| 567 static int nmethod_info(Nmethod_t *N) | |
| 568 { | |
| 569 jvm_agent_t *J = N->J; | |
| 570 uint64_t nm = N->nm; | |
| 571 int32_t err; | |
| 572 | |
| 573 if (debug > 2 ) | |
| 574 fprintf(stderr, "\t nmethod_info: BEGIN \n"); | |
| 575 | |
| 576 /* Instructions */ | |
| 1748 | 577 err = ps_pread(J->P, nm + OFFSET_CodeBlob_code_offset, &N->instrs_beg, SZ32); |
| 0 | 578 CHECK_FAIL(err); |
| 579 err = ps_pread(J->P, nm + OFFSET_CodeBlob_data_offset, &N->instrs_end, SZ32); | |
| 580 CHECK_FAIL(err); | |
| 581 err = ps_pread(J->P, nm + OFFSET_nmethod_deoptimize_offset, &N->deopt_beg, SZ32); | |
| 582 CHECK_FAIL(err); | |
| 583 err = ps_pread(J->P, nm + OFFSET_nmethod_orig_pc_offset, &N->orig_pc_offset, SZ32); | |
| 584 CHECK_FAIL(err); | |
| 585 | |
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586 /* Metadata */ |
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587 err = ps_pread(J->P, nm + OFFSET_nmethod_metadata_offset, &N->metadata_beg, SZ32); |
| 0 | 588 CHECK_FAIL(err); |
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589 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_data_offset, &N->metadata_end, SZ32); |
| 0 | 590 CHECK_FAIL(err); |
| 591 | |
| 592 /* scopes_pcs */ | |
| 593 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_pcs_offset, &N->scopes_pcs_beg, SZ32); | |
| 594 CHECK_FAIL(err); | |
| 595 err = ps_pread(J->P, nm + OFFSET_nmethod_handler_table_offset, &N->scopes_pcs_end, SZ32); | |
| 596 CHECK_FAIL(err); | |
| 597 | |
| 598 /* scopes_data */ | |
| 599 err = ps_pread(J->P, nm + OFFSET_nmethod_scopes_data_offset, &N->scopes_data_beg, SZ32); | |
| 600 CHECK_FAIL(err); | |
| 601 | |
| 602 if (debug > 2 ) { | |
| 603 N->scopes_data_end = N->scopes_pcs_beg; | |
| 604 | |
| 605 fprintf(stderr, "\t nmethod_info: instrs_beg: %#x, instrs_end: %#x\n", | |
| 606 N->instrs_beg, N->instrs_end); | |
| 607 | |
| 608 fprintf(stderr, "\t nmethod_info: deopt_beg: %#x \n", | |
| 609 N->deopt_beg); | |
| 610 | |
| 611 fprintf(stderr, "\t nmethod_info: orig_pc_offset: %#x \n", | |
| 612 N->orig_pc_offset); | |
| 613 | |
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614 fprintf(stderr, "\t nmethod_info: metadata_beg: %#x, metadata_end: %#x\n", |
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615 N->metadata_beg, N->metadata_end); |
| 0 | 616 |
| 617 fprintf(stderr, "\t nmethod_info: scopes_data_beg: %#x, scopes_data_end: %#x\n", | |
| 618 N->scopes_data_beg, N->scopes_data_end); | |
| 619 | |
| 620 fprintf(stderr, "\t nmethod_info: scopes_pcs_beg: %#x, scopes_pcs_end: %#x\n", | |
| 621 N->scopes_pcs_beg, N->scopes_pcs_end); | |
| 622 | |
| 623 fprintf(stderr, "\t nmethod_info: END \n\n"); | |
| 624 } | |
| 625 return PS_OK; | |
| 626 | |
| 627 fail: | |
| 628 return err; | |
| 629 } | |
| 630 | |
| 631 static int | |
| 632 raw_read_int(jvm_agent_t* J, uint64_t *buffer, int32_t *val) | |
| 633 { | |
| 634 int shift = 0; | |
| 635 int value = 0; | |
| 636 uint8_t ch = 0; | |
| 637 int32_t err; | |
| 638 int32_t sum; | |
| 639 // Constants for UNSIGNED5 coding of Pack200 | |
| 640 // see compressedStream.hpp | |
| 641 enum { | |
| 642 lg_H = 6, | |
| 643 H = 1<<lg_H, | |
| 644 BitsPerByte = 8, | |
| 645 L = (1<<BitsPerByte)-H, | |
| 646 }; | |
| 647 int i; | |
| 648 | |
| 649 err = ps_pread(J->P, (*buffer)++, &ch, sizeof(uint8_t)); | |
| 650 CHECK_FAIL(err); | |
| 651 if (debug > 2) | |
| 652 fprintf(stderr, "\t\t\t raw_read_int: *buffer: %#llx, ch: %#x\n", *buffer, ch); | |
| 653 | |
| 654 sum = ch; | |
| 655 if ( sum >= L ) { | |
| 656 int32_t lg_H_i = lg_H; | |
| 657 // Read maximum of 5 total bytes (we've already read 1). | |
| 658 // See CompressedReadStream::read_int_mb | |
| 659 for ( i = 0; i < 4; i++) { | |
| 660 err = ps_pread(J->P, (*buffer)++, &ch, sizeof(uint8_t)); | |
| 661 CHECK_FAIL(err); | |
| 662 sum += ch << lg_H_i; | |
| 663 if (ch < L ) { | |
| 664 *val = sum; | |
| 665 return PS_OK; | |
| 666 } | |
| 667 lg_H_i += lg_H; | |
| 668 } | |
| 669 } | |
| 670 *val = sum; | |
| 671 return PS_OK; | |
| 672 | |
| 673 fail: | |
| 674 return err; | |
| 675 } | |
| 676 | |
| 677 static int | |
| 678 read_pair(jvm_agent_t* J, uint64_t *buffer, int32_t *bci, int32_t *line) | |
| 679 { | |
| 680 uint8_t next = 0; | |
| 681 int32_t bci_delta; | |
| 682 int32_t line_delta; | |
| 683 int32_t err; | |
| 684 | |
| 685 if (debug > 2) | |
| 686 fprintf(stderr, "\t\t read_pair: BEGIN\n"); | |
| 687 | |
| 688 err = ps_pread(J->P, (*buffer)++, &next, sizeof(uint8_t)); | |
| 689 CHECK_FAIL(err); | |
| 690 | |
| 691 if (next == 0) { | |
| 692 if (debug > 2) | |
| 693 fprintf(stderr, "\t\t read_pair: END: next == 0\n"); | |
| 694 return 1; /* stream terminated */ | |
| 695 } | |
| 696 if (next == 0xFF) { | |
| 697 if (debug > 2) | |
| 698 fprintf(stderr, "\t\t read_pair: END: next == 0xFF\n"); | |
| 699 | |
| 700 /* Escape character, regular compression used */ | |
| 701 | |
| 702 err = raw_read_int(J, buffer, &bci_delta); | |
| 703 CHECK_FAIL(err); | |
| 704 | |
| 705 err = raw_read_int(J, buffer, &line_delta); | |
| 706 CHECK_FAIL(err); | |
| 707 | |
| 708 *bci += bci_delta; | |
| 709 *line += line_delta; | |
| 710 | |
| 711 if (debug > 2) { | |
| 712 fprintf(stderr, "\t\t read_pair: delta = (line %d: %d)\n", | |
| 713 line_delta, bci_delta); | |
| 714 fprintf(stderr, "\t\t read_pair: unpack= (line %d: %d)\n", | |
| 715 *line, *bci); | |
| 716 } | |
| 717 } else { | |
| 718 /* Single byte compression used */ | |
| 719 *bci += next >> 3; | |
| 720 *line += next & 0x7; | |
| 721 if (debug > 2) { | |
| 722 fprintf(stderr, "\t\t read_pair: delta = (line %d: %d)\n", | |
| 723 next & 0x7, next >> 3); | |
| 724 fprintf(stderr, "\t\t read_pair: unpack= (line %d: %d)\n", | |
| 725 *line, *bci); | |
| 726 } | |
| 727 } | |
| 728 if (debug > 2) | |
| 729 fprintf(stderr, "\t\t read_pair: END\n"); | |
| 730 return PS_OK; | |
| 731 | |
| 732 fail: | |
| 733 if (debug) | |
| 734 fprintf(stderr, "\t\t read_pair: FAIL\n"); | |
| 735 return err; | |
| 736 } | |
| 737 | |
| 738 static int | |
| 739 line_number_from_bci(jvm_agent_t* J, Vframe_t *vf) | |
| 740 { | |
| 741 uint64_t buffer; | |
| 742 uint16_t code_size; | |
| 743 uint64_t code_end_delta; | |
| 744 uint64_t constMethod; | |
| 745 int8_t access_flags; | |
| 746 int32_t best_bci = 0; | |
| 747 int32_t stream_bci = 0; | |
| 748 int32_t stream_line = 0; | |
| 749 int32_t err; | |
| 750 | |
| 751 if (debug > 2) { | |
| 752 char name[256]; | |
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753 err = name_for_methodPtr(J, vf->method, name, 256); |
| 0 | 754 CHECK_FAIL(err); |
| 755 fprintf(stderr, "\t line_number_from_bci: BEGIN, method name: %s, targ bci: %d\n", | |
| 756 name, vf->bci); | |
| 757 } | |
| 758 | |
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759 err = read_pointer(J, vf->method + OFFSET_Method_constMethod, &constMethod); |
| 0 | 760 CHECK_FAIL(err); |
| 761 | |
| 762 vf->line = 0; | |
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763 err = ps_pread(J->P, constMethod + OFFSET_ConstMethod_flags, &access_flags, sizeof(int8_t)); |
| 0 | 764 CHECK_FAIL(err); |
| 765 | |
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766 if (!(access_flags & ConstMethod_has_linenumber_table)) { |
| 0 | 767 if (debug > 2) |
| 768 fprintf(stderr, "\t line_number_from_bci: END: !HAS_LINE_NUMBER_TABLE \n\n"); | |
| 769 return PS_OK; | |
| 770 } | |
| 771 | |
| 772 /* The line numbers are a short array of 2-tuples [start_pc, line_number]. | |
| 773 * Not necessarily sorted and not necessarily one-to-one. | |
| 774 */ | |
| 775 | |
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776 err = ps_pread(J->P, constMethod + OFFSET_ConstMethod_code_size, &code_size, SZ16); |
| 0 | 777 CHECK_FAIL(err); |
| 778 | |
| 779 /* inlined_table_start() */ | |
| 780 code_end_delta = (uint64_t) (access_flags & AccessFlags_NATIVE) ? 2*POINTER_SIZE : 0; | |
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781 buffer = constMethod + (uint64_t) SIZE_ConstMethod + (uint64_t) code_size + code_end_delta; |
| 0 | 782 |
| 783 if (debug > 2) { | |
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784 fprintf(stderr, "\t\t line_number_from_bci: method: %#llx, native: %d\n", |
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785 vf->method, (access_flags & AccessFlags_NATIVE)); |
| 0 | 786 fprintf(stderr, "\t\t line_number_from_bci: buffer: %#llx, code_size: %d\n", |
| 787 buffer, (int) code_size); | |
| 788 } | |
| 789 | |
| 790 while (read_pair(J, &buffer, &stream_bci, &stream_line) == 0) { | |
| 791 if (stream_bci == vf->bci) { | |
| 792 /* perfect match */ | |
| 793 if (debug > 2) | |
| 794 fprintf(stderr, "\t line_number_from_bci: END: exact line: %ld \n\n", vf->line); | |
| 795 vf->line = stream_line; | |
| 796 return PS_OK; | |
| 797 } else { | |
| 798 /* update best_bci/line */ | |
| 799 if (stream_bci < vf->bci && stream_bci >= best_bci) { | |
| 800 best_bci = stream_bci; | |
| 801 vf->line = stream_line; | |
| 802 if (debug > 2) { | |
| 803 fprintf(stderr, "\t line_number_from_bci: best_bci: %ld, best_line: %ld\n", | |
| 804 best_bci, vf->line); | |
| 805 } | |
| 806 } | |
| 807 } | |
| 808 } | |
| 809 if (debug > 2) | |
| 810 fprintf(stderr, "\t line_number_from_bci: END: line: %ld \n\n", vf->line); | |
| 811 return PS_OK; | |
| 812 | |
| 813 fail: | |
| 814 if (debug) | |
| 815 fprintf(stderr, "\t line_number_from_bci: FAIL\n"); | |
| 816 return err; | |
| 817 } | |
| 818 | |
| 819 static int | |
| 820 get_real_pc(Nmethod_t *N, uint64_t pc_desc, uint64_t *real_pc) | |
| 821 { | |
| 822 int32_t pc_offset; | |
| 823 int32_t err; | |
| 824 | |
| 825 err = ps_pread(N->J->P, pc_desc + OFFSET_PcDesc_pc_offset, &pc_offset, SZ32); | |
| 826 CHECK_FAIL(err); | |
| 827 | |
| 828 *real_pc = N->nm + N->instrs_beg + pc_offset; | |
| 829 if (debug > 2) { | |
| 830 fprintf(stderr, "\t\t get_real_pc: pc_offset: %lx, real_pc: %llx\n", | |
| 831 pc_offset, *real_pc); | |
| 832 } | |
| 833 return PS_OK; | |
| 834 | |
| 835 fail: | |
| 836 return err; | |
| 837 } | |
| 838 | |
| 839 /* Finds a PcDesc with real-pc equal to N->pc */ | |
| 840 static int pc_desc_at(Nmethod_t *N) | |
| 841 { | |
| 842 uint64_t pc_diff; | |
| 843 int32_t offs; | |
| 844 int32_t err; | |
| 845 | |
| 846 if (debug > 2) | |
| 847 fprintf(stderr, "\t pc_desc_at: BEGIN\n"); | |
| 848 | |
| 849 N->vf_cnt = 0; | |
| 850 N->pc_desc = 0; | |
| 851 | |
| 852 for (offs = N->scopes_pcs_beg; offs < N->scopes_pcs_end; offs += SIZE_PcDesc) { | |
| 853 uint64_t pd; | |
| 854 uint64_t best_pc_diff = 16; /* some approximation */ | |
| 855 uint64_t real_pc = 0; | |
| 856 | |
| 857 pd = N->nm + offs; | |
| 858 err = get_real_pc(N, pd, &real_pc); | |
| 859 CHECK_FAIL(err); | |
| 860 | |
| 861 pc_diff = real_pc - N->pc; | |
| 862 | |
| 863 /* In general, this fragment should work */ | |
| 864 if (pc_diff == 0) { | |
| 865 N->pc_desc = pd; | |
| 866 if (debug) { | |
| 867 fprintf(stderr, "\t pc_desc_at: END: pc_desc: FOUND: %#lx \n\n", pd); | |
| 868 } | |
| 869 return PS_OK; | |
| 870 } | |
| 871 /* This fragment is to be able to find out an appropriate | |
| 872 * pc_desc entry even if pc_desc info is inaccurate. | |
| 873 */ | |
| 874 if (best_pc_diff > pc_diff && pc_diff > 0) { | |
| 875 best_pc_diff = pc_diff; | |
| 876 N->pc_desc = pd; | |
| 877 } | |
| 878 } | |
| 879 if (debug) { | |
| 880 fprintf(stderr, "\t pc_desc_at: END: pc_desc NOT FOUND"); | |
| 881 if (pc_diff < 20) | |
| 882 fprintf(stderr, ", best pc_diff: %d\n\n", pc_diff); | |
| 883 else | |
| 884 fprintf(stderr, "\n\n"); | |
| 885 } | |
| 886 return PS_OK; | |
| 887 | |
| 888 fail: | |
| 889 return err; | |
| 890 } | |
| 891 | |
| 892 static int | |
| 893 scope_desc_at(Nmethod_t *N, int32_t decode_offset, Vframe_t *vf) | |
| 894 { | |
| 895 uint64_t buffer; | |
| 896 int32_t err; | |
| 897 | |
| 898 if (debug > 2) { | |
| 899 fprintf(stderr, "\t\t scope_desc_at: BEGIN \n"); | |
| 900 } | |
| 901 | |
| 902 buffer = N->nm + N->scopes_data_beg + decode_offset; | |
| 903 | |
| 904 err = raw_read_int(N->J, &buffer, &vf->sender_decode_offset); | |
| 905 CHECK_FAIL(err); | |
| 906 | |
| 907 err = raw_read_int(N->J, &buffer, &vf->methodIdx); | |
| 908 CHECK_FAIL(err); | |
| 909 | |
| 910 err = raw_read_int(N->J, &buffer, &vf->bci); | |
| 911 CHECK_FAIL(err); | |
| 912 | |
| 913 if (debug > 2) { | |
| 914 fprintf(stderr, "\t\t scope_desc_at: sender_decode_offset: %#x\n", | |
| 915 vf->sender_decode_offset); | |
| 916 fprintf(stderr, "\t\t scope_desc_at: methodIdx: %d\n", vf->methodIdx); | |
| 917 fprintf(stderr, "\t\t scope_desc_at: bci: %d\n", vf->bci); | |
| 918 | |
| 919 fprintf(stderr, "\t\t scope_desc_at: END \n\n"); | |
| 920 } | |
| 921 return PS_OK; | |
| 922 | |
| 923 fail: | |
| 924 return err; | |
| 925 } | |
| 926 | |
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927 static int scopeDesc_chain(Nmethod_t *N) { |
| 0 | 928 int32_t decode_offset = 0; |
| 929 int32_t err; | |
| 930 | |
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931 if (debug > 2) { |
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932 fprintf(stderr, "\t scopeDesc_chain: BEGIN\n"); |
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933 } |
| 0 | 934 |
| 935 err = ps_pread(N->J->P, N->pc_desc + OFFSET_PcDesc_scope_decode_offset, | |
| 936 &decode_offset, SZ32); | |
| 937 CHECK_FAIL(err); | |
| 938 | |
| 939 while (decode_offset > 0) { | |
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940 Vframe_t *vf = &N->vframes[N->vf_cnt]; |
| 0 | 941 |
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942 if (debug > 2) { |
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943 fprintf(stderr, "\t scopeDesc_chain: decode_offset: %#x\n", decode_offset); |
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944 } |
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945 |
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946 err = scope_desc_at(N, decode_offset, vf); |
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947 CHECK_FAIL(err); |
| 0 | 948 |
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949 if (vf->methodIdx > ((N->metadata_end - N->metadata_beg) / POINTER_SIZE)) { |
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950 fprintf(stderr, "\t scopeDesc_chain: (methodIdx > metadata length) !\n"); |
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951 return -1; |
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952 } |
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953 err = read_pointer(N->J, N->nm + N->metadata_beg + (vf->methodIdx-1)*POINTER_SIZE, |
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954 &vf->method); |
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955 CHECK_FAIL(err); |
| 0 | 956 |
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957 if (vf->method) { |
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958 N->vf_cnt++; |
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959 err = line_number_from_bci(N->J, vf); |
| 0 | 960 CHECK_FAIL(err); |
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961 if (debug > 2) { |
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962 fprintf(stderr, "\t scopeDesc_chain: method: %#8llx, line: %ld\n", |
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963 vf->method, vf->line); |
| 0 | 964 } |
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965 } |
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966 decode_offset = vf->sender_decode_offset; |
| 0 | 967 } |
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968 if (debug > 2) { |
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969 fprintf(stderr, "\t scopeDesc_chain: END \n\n"); |
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970 } |
| 0 | 971 return PS_OK; |
| 972 | |
| 973 fail: | |
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974 if (debug) { |
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975 fprintf(stderr, "\t scopeDesc_chain: FAIL \n\n"); |
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976 } |
| 0 | 977 return err; |
| 978 } | |
| 979 | |
| 980 | |
| 981 static int | |
| 982 name_for_nmethod(jvm_agent_t* J, | |
| 983 uint64_t nm, | |
| 984 uint64_t pc, | |
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985 uint64_t method, |
| 0 | 986 char *result, |
| 987 size_t size, | |
| 988 Jframe_t *jframe | |
| 989 ) { | |
| 990 Nmethod_t *N; | |
| 991 Vframe_t *vf; | |
| 992 int32_t err; | |
| 993 int deoptimized = 0; | |
| 994 | |
| 995 if (debug) { | |
| 996 fprintf(stderr, "name_for_nmethod: BEGIN: nmethod: %#llx, pc: %#llx\n", nm, pc); | |
| 997 } | |
| 998 if (J->N == NULL) { | |
| 999 J->N = (Nmethod_t *) malloc(sizeof(Nmethod_t)); | |
| 1000 } | |
| 1001 memset(J->N, 0, sizeof(Nmethod_t)); /* Initial stat: all values are zeros */ | |
| 1002 N = J->N; | |
| 1003 N->J = J; | |
| 1004 N->nm = nm; | |
| 1005 N->pc = pc; | |
| 1006 N->jframe = jframe; | |
| 1007 | |
| 1008 err = nmethod_info(N); | |
| 1009 CHECK_FAIL(err); | |
| 1010 if (debug) { | |
| 1011 fprintf(stderr, "name_for_nmethod: pc: %#llx, deopt_pc: %#llx\n", | |
| 1012 pc, N->nm + N->deopt_beg); | |
| 1013 } | |
| 1014 | |
| 1015 /* check for a deoptimized frame */ | |
| 1016 if ( pc == N->nm + N->deopt_beg) { | |
| 1017 uint64_t base; | |
| 1018 if (debug) { | |
| 1019 fprintf(stderr, "name_for_nmethod: found deoptimized frame\n"); | |
| 1020 } | |
| 1021 if (J->prev_fr.sender_sp != 0) { | |
| 1022 base = J->prev_fr.sender_sp + N->orig_pc_offset; | |
| 1023 } else { | |
| 1024 base = J->curr_fr.sp + N->orig_pc_offset; | |
| 1025 } | |
| 1026 err = read_pointer(J, base, &N->pc); | |
| 1027 CHECK_FAIL(err); | |
| 1028 if (debug) { | |
| 1029 fprintf(stderr, "name_for_nmethod: found deoptimized frame converting pc from %#8llx to %#8llx\n", | |
| 1030 pc, N->pc); | |
| 1031 } | |
| 1032 deoptimized = 1; | |
| 1033 } | |
| 1034 | |
| 1035 err = pc_desc_at(N); | |
| 1036 CHECK_FAIL(err); | |
| 1037 | |
| 1038 if (N->pc_desc > 0) { | |
| 1039 jframe->locinf = 1; | |
| 1040 err = scopeDesc_chain(N); | |
| 1041 CHECK_FAIL(err); | |
| 1042 } | |
| 1043 result[0] = COMP_METHOD_SIGN; | |
| 1044 vf = &N->vframes[0]; | |
| 1045 if (N->vf_cnt > 0) { | |
| 1046 jframe->vf_cnt = N->vf_cnt; | |
| 1047 jframe->bci = vf->bci; | |
| 1048 jframe->line = vf->line; | |
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1049 err = name_for_methodPtr(J, N->vframes[0].method, result+1, size-1); |
| 0 | 1050 CHECK_FAIL(err); |
| 1051 } else { | |
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1052 err = name_for_methodPtr(J, method, result+1, size-1); |
| 0 | 1053 CHECK_FAIL(err); |
| 1054 } | |
| 1055 if (deoptimized) { | |
| 1056 strncat(result + 1, " [deoptimized frame]; ", size-1); | |
| 1057 } else { | |
| 1058 strncat(result + 1, " [compiled] ", size-1); | |
| 1059 } | |
| 1060 if (debug) | |
| 1061 fprintf(stderr, "name_for_nmethod: END: method name: %s, vf_cnt: %d\n\n", | |
| 1062 result, N->vf_cnt); | |
| 1063 return PS_OK; | |
| 1064 | |
| 1065 fail: | |
| 1066 if (debug) | |
| 1067 fprintf(stderr, "name_for_nmethod: FAIL \n\n"); | |
| 1068 return err; | |
| 1069 } | |
| 1070 | |
| 1071 int is_bci(intptr_t bcx) { | |
| 1072 switch (DATA_MODEL) { | |
| 1073 case PR_MODEL_LP64: | |
| 1074 return ((uintptr_t) bcx) <= ((uintptr_t) MAX_METHOD_CODE_SIZE) ; | |
| 1075 case PR_MODEL_ILP32: | |
| 1076 default: | |
| 1077 return 0 <= bcx && bcx <= MAX_METHOD_CODE_SIZE; | |
| 1078 } | |
| 1079 } | |
| 1080 | |
| 1081 static int | |
| 1082 name_for_imethod(jvm_agent_t* J, | |
| 1083 uint64_t bcx, | |
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1084 uint64_t method, |
| 0 | 1085 char *result, |
| 1086 size_t size, | |
| 1087 Jframe_t *jframe | |
| 1088 ) { | |
| 1089 uint64_t bci; | |
| 1090 uint64_t constMethod; | |
| 1091 Vframe_t vframe = {0}; | |
| 1092 Vframe_t *vf = &vframe; | |
| 1093 int32_t err; | |
| 1094 | |
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1095 err = read_pointer(J, method + OFFSET_Method_constMethod, &constMethod); |
| 0 | 1096 CHECK_FAIL(err); |
| 1097 | |
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1098 bci = is_bci(bcx) ? bcx : bcx - (constMethod + (uint64_t) SIZE_ConstMethod); |
| 0 | 1099 |
| 1100 if (debug) | |
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1101 fprintf(stderr, "\t name_for_imethod: BEGIN: method: %#llx\n", method); |
| 0 | 1102 |
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1103 err = name_for_methodPtr(J, method, result, size); |
| 0 | 1104 CHECK_FAIL(err); |
| 1105 if (debug) | |
| 1106 fprintf(stderr, "\t name_for_imethod: method name: %s\n", result); | |
| 1107 | |
| 1108 if (bci > 0) { | |
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1109 vf->method = method; |
| 0 | 1110 vf->bci = bci; |
| 1111 err = line_number_from_bci(J, vf); | |
| 1112 CHECK_FAIL(err); | |
| 1113 } | |
| 1114 jframe->bci = vf->bci; | |
| 1115 jframe->line = vf->line; | |
| 1116 jframe->locinf = 1; | |
| 1117 | |
| 1118 if (debug) { | |
| 1119 fprintf(stderr, "\t name_for_imethod: END: bci: %d, line: %d\n\n", | |
| 1120 vf->bci, vf->line); | |
| 1121 } | |
| 1122 return PS_OK; | |
| 1123 | |
| 1124 fail: | |
| 1125 if (debug) | |
| 1126 fprintf(stderr, "\t name_for_imethod: FAIL\n"); | |
| 1127 return err; | |
| 1128 } | |
| 1129 | |
| 1130 static int | |
| 1131 name_for_codecache(jvm_agent_t* J, uint64_t fp, uint64_t pc, char * result, | |
| 1132 size_t size, Jframe_t *jframe, int* is_interpreted) | |
| 1133 { | |
| 1134 uint64_t start; | |
| 1135 uint64_t vtbl; | |
| 1136 int32_t err; | |
| 1137 *is_interpreted = 0; | |
| 1138 | |
| 1139 result[0] = '\0'; | |
| 1140 | |
| 1141 err = find_start(J, pc, &start); | |
| 1142 CHECK_FAIL(err); | |
| 1143 | |
| 1144 err = read_pointer(J, start, &vtbl); | |
| 1145 CHECK_FAIL(err); | |
| 1146 | |
| 1147 if (vtbl == J->nmethod_vtbl) { | |
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1148 uint64_t method; |
| 0 | 1149 |
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1150 err = read_pointer(J, start + OFFSET_nmethod_method, &method); |
| 0 | 1151 CHECK_FAIL(err); |
| 1152 | |
| 1153 if (debug) { | |
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1154 fprintf(stderr, "name_for_codecache: start: %#8llx, pc: %#8llx, method: %#8llx \n", |
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1155 start, pc, method); |
| 0 | 1156 } |
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1157 err = name_for_nmethod(J, start, pc, method, result, size, jframe); |
| 0 | 1158 CHECK_FAIL(err); |
| 1159 } else if (vtbl == J->BufferBlob_vtbl) { | |
| 1160 const char * name; | |
| 1161 | |
| 1162 err = read_string_pointer(J, start + OFFSET_CodeBlob_name, &name); | |
| 1163 | |
| 1164 /* | |
| 1165 * Temporary usage of string "Interpreter". | |
| 1166 * We need some other way to distinguish "StubRoutines" | |
| 1167 * and regular interpreted frames. | |
| 1168 */ | |
| 1169 if (err == PS_OK && strncmp(name, "Interpreter", 11) == 0) { | |
| 1170 *is_interpreted = 1; | |
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1171 if (is_method(J, J->methodPtr)) { |
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1172 return name_for_imethod(J, J->bcx, J->methodPtr, result, size, jframe); |
| 0 | 1173 } |
| 1174 } | |
| 1175 | |
| 1176 if (err == PS_OK) { | |
| 1177 strncpy(result, name, size); | |
| 1178 free((void*)name); | |
| 1179 } else { | |
| 1180 strncpy(result, "<unknown BufferBlob>", size); | |
| 1181 } | |
| 1182 /* return PS_OK; */ | |
| 1183 } else { | |
| 1184 const char * name; | |
| 1185 | |
| 1186 err = read_string_pointer(J, start + OFFSET_CodeBlob_name, &name); | |
| 1187 if (err == PS_OK) { | |
| 1188 strncpy(result, name, size); | |
| 1189 free((void*)name); | |
| 1190 } else { | |
| 1191 strncpy(result, "<unknown CodeBlob>", size); | |
| 1192 WARN1("unknown CodeBlob: vtbl = 0x%x", vtbl); | |
| 1193 } | |
| 1194 } | |
| 1195 result[size-1] = '\0'; | |
| 1196 | |
| 1197 #ifdef X86_COMPILER2 | |
| 1198 if (vtbl != J->RuntimeStub_vtbl) { | |
| 1199 uint64_t trial_pc; | |
| 1200 int frame_size; | |
| 1201 err = ps_pread(J->P, start + OFFSET_CodeBlob_frame_size, | |
| 1202 &frame_size, SZ32); | |
| 1203 CHECK_FAIL(err); | |
| 1204 | |
| 1205 // frame_size is in words, we want bytes. | |
| 1206 frame_size *= POINTER_SIZE; /* word => byte conversion */ | |
| 1207 | |
| 1208 /* | |
| 1209 Because c2 doesn't use FP as a framepointer the value of sp/fp we receive | |
| 1210 in the initial entry to a set of stack frames containing server frames | |
| 1211 will pretty much be nonsense. We can detect that nonsense by looking to | |
| 1212 see if the PC we received is correct if we look at the expected storage | |
| 1213 location in relation to the FP (ie. POINTER_SIZE(FP) ) | |
| 1214 */ | |
| 1215 | |
| 1216 err = read_pointer(J, fp + POINTER_SIZE , &trial_pc); | |
| 1217 if ( (err != PS_OK || trial_pc != pc) && frame_size > 0 ) { | |
| 1218 // Either we couldn't even read at the "fp" or the pc didn't match | |
| 1219 // both are sure clues that the fp is bogus. We no search the stack | |
| 1220 // for a reasonable number of words trying to find the bogus fp | |
| 1221 // and the current pc in adjacent words. The we will be able to | |
| 1222 // deduce an approximation of the frame pointer and actually get | |
| 1223 // the correct stack pointer. Which we can then unwind for the | |
| 1224 // next frame. | |
| 1225 int i; | |
| 1226 uint64_t check; | |
| 1227 uint64_t base = J->curr_fr.sp; | |
| 1228 uint64_t prev_fp = 0; | |
| 1229 for ( i = 0; i < frame_size * 5 ; i++, base += POINTER_SIZE ) { | |
| 1230 err = read_pointer(J, base , &check); | |
| 1231 CHECK_FAIL(err); | |
| 1232 if (check == fp) { | |
| 1233 base += POINTER_SIZE; | |
| 1234 err = read_pointer(J, base , &check); | |
| 1235 CHECK_FAIL(err); | |
| 1236 if (check == pc) { | |
| 1237 if (debug) { | |
| 1238 fprintf(stderr, "name_for_codecache: found matching fp/pc combo at 0x%llx\n", base - POINTER_SIZE); | |
| 1239 } | |
| 1240 prev_fp = base - 2 * POINTER_SIZE; | |
| 1241 break; | |
| 1242 } | |
| 1243 } | |
| 1244 } | |
| 1245 if ( prev_fp != 0 ) { | |
| 1246 // real_sp is the sp we should have received for this frame | |
| 1247 uint64_t real_sp = prev_fp + 2 * POINTER_SIZE; | |
| 1248 // +POINTER_SIZE because callee owns the return address so caller's sp is +1 word | |
| 1249 jframe->new_sp = real_sp + frame_size + POINTER_SIZE; | |
| 1250 err = read_pointer(J, jframe->new_sp - POINTER_SIZE , &jframe->new_pc); | |
| 1251 CHECK_FAIL(err); | |
| 1252 err = read_pointer(J, jframe->new_sp - 2*POINTER_SIZE, &jframe->new_fp); | |
| 1253 CHECK_FAIL(err); | |
| 1254 return PS_OK; | |
| 1255 } | |
| 1256 } | |
| 1257 | |
| 1258 /* A prototype to workaround FP absence */ | |
| 1259 /* | |
| 1260 * frame_size can be 0 for StubRoutines (1) frame. | |
| 1261 * In this case it should work with fp as usual. | |
| 1262 */ | |
| 1263 if (frame_size > 0) { | |
| 1264 jframe->new_fp = J->prev_fr.fp + frame_size; | |
| 1265 jframe->new_sp = jframe->new_fp + 2 * POINTER_SIZE; | |
| 1266 } else { | |
| 1267 memset(&J->curr_fr, 0, sizeof(Frame_t)); | |
| 1268 err = read_pointer(J, fp, &jframe->new_fp); | |
| 1269 CHECK_FAIL(err); | |
| 1270 | |
| 1271 err = read_pointer(J, jframe->new_fp + POINTER_SIZE, &jframe->new_pc); | |
| 1272 CHECK_FAIL(err); | |
| 1273 } | |
| 1274 if (debug) { | |
| 1275 fprintf(stderr, "name_for_codecache: %s, frame_size=%#lx\n", | |
| 1276 result, frame_size); | |
| 1277 fprintf(stderr, "name_for_codecache: prev_fr.fp=%#lx, fp=%#lx\n", | |
| 1278 J->prev_fr.fp, jframe->new_fp); | |
| 1279 } | |
| 1280 } | |
| 1281 #endif /* X86_COMPILER2 */ | |
| 1282 | |
| 1283 return PS_OK; | |
| 1284 | |
| 1285 fail: | |
| 1286 return err; | |
| 1287 } | |
| 1288 | |
| 1289 int Jget_vframe(jvm_agent_t* J, int vframe_no, | |
| 1290 char *name, size_t size, Jframe_t *jframe) | |
| 1291 { | |
| 1292 Nmethod_t *N = J->N; | |
| 1293 Vframe_t *vf; | |
| 1294 int32_t err; | |
| 1295 | |
| 1296 if (vframe_no >= N->vf_cnt) { | |
| 1297 (void) sprintf(name, "Wrong inlinedMethod%1d()", vframe_no); | |
| 1298 return -1; | |
| 1299 } | |
| 1300 vf = N->vframes + vframe_no; | |
| 1301 name[0] = COMP_METHOD_SIGN; | |
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1302 err = name_for_methodPtr(J, vf->method, name + 1, size); |
| 0 | 1303 CHECK_FAIL(err); |
| 1304 | |
| 1305 jframe->bci = vf->bci; | |
| 1306 jframe->line = vf->line; | |
| 1307 if (debug) { | |
| 1308 fprintf(stderr, "\t Jget_vframe: method name: %s, line: %ld\n", | |
| 1309 name, vf->line); | |
| 1310 } | |
| 1311 return PS_OK; | |
| 1312 | |
| 1313 fail: | |
| 1314 if (debug) { | |
| 1315 fprintf(stderr, "\t Jget_vframe: FAIL\n"); | |
| 1316 } | |
| 1317 return err; | |
| 1318 } | |
| 1319 | |
| 1320 #define MAX_SYM_SIZE 256 | |
| 1321 | |
| 1322 int Jlookup_by_regs(jvm_agent_t* J, const prgregset_t regs, char *name, | |
| 1323 size_t size, Jframe_t *jframe) { | |
| 1324 uintptr_t fp; | |
| 1325 uintptr_t pc; | |
| 1326 /* arguments given to read_pointer need to be worst case sized */ | |
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1327 uint64_t methodPtr = 0; |
| 0 | 1328 uint64_t sender_sp; |
| 1329 uint64_t bcx = 0; | |
| 1330 int is_interpreted = 0; | |
| 1331 int result = PS_OK; | |
| 1332 int err = PS_OK; | |
| 1333 | |
| 1334 if (J == NULL) { | |
| 1335 return -1; | |
| 1336 } | |
| 1337 | |
| 1338 jframe->vf_cnt = 1; | |
| 1339 jframe->new_fp = 0; | |
| 1340 jframe->new_pc = 0; | |
| 1341 jframe->line = 0; | |
| 1342 jframe->bci = 0; | |
| 1343 jframe->locinf = 0; | |
| 1344 | |
| 1345 read_volatiles(J); | |
| 1346 pc = (uintptr_t) regs[R_PC]; | |
| 1347 J->curr_fr.pc = pc; | |
| 1348 J->curr_fr.fp = regs[R_FP]; | |
| 1349 J->curr_fr.sp = regs[R_SP]; | |
| 1350 | |
| 1351 if (debug) | |
| 1352 fprintf(stderr, "Jlookup_by_regs: BEGINs: fp=%#lx, pc=%#lx\n", regs[R_FP], pc); | |
| 1353 | |
| 1354 #if defined(sparc) || defined(__sparc) | |
| 1355 /* The following workaround is for SPARC. CALL instruction occupates 8 bytes. | |
| 1356 * In the pcDesc structure return pc offset is recorded for CALL instructions. | |
| 1357 * regs[R_PC] contains a CALL instruction pc offset. | |
| 1358 */ | |
| 1359 pc += 8; | |
| 1360 bcx = (uintptr_t) regs[R_L1]; | |
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1361 methodPtr = (uintptr_t) regs[R_L2]; |
| 0 | 1362 sender_sp = regs[R_I5]; |
| 1363 if (debug > 2) { | |
| 1364 fprintf(stderr, "\nregs[R_I1]=%lx, regs[R_I2]=%lx, regs[R_I5]=%lx, regs[R_L1]=%lx, regs[R_L2]=%lx\n", | |
| 1365 regs[R_I1], regs[R_I2], regs[R_I5], regs[R_L1], regs[R_L2]); | |
| 1366 } | |
| 1367 #elif defined(i386) || defined(__i386) || defined(__amd64) | |
| 1368 | |
| 1369 fp = (uintptr_t) regs[R_FP]; | |
| 1370 if (J->prev_fr.fp == 0) { | |
| 1371 #ifdef X86_COMPILER2 | |
| 1372 /* A workaround for top java frames */ | |
| 1373 J->prev_fr.fp = (uintptr_t)(regs[R_SP] - 2 * POINTER_SIZE); | |
| 1374 #else | |
| 1375 J->prev_fr.fp = (uintptr_t)(regs[R_SP] - POINTER_SIZE); | |
| 1376 #endif /* COMPILER2 */ | |
| 1377 } | |
| 1378 if (debug > 2) { | |
| 1379 printf("Jlookup_by_regs: J->prev_fr.fp = %#lx\n", J->prev_fr.fp); | |
| 1380 } | |
| 1381 | |
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1382 if (read_pointer(J, fp + OFFSET_interpreter_frame_method, &methodPtr) != PS_OK) { |
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1383 methodPtr = 0; |
| 0 | 1384 } |
| 1385 if (read_pointer(J, fp + OFFSET_interpreter_frame_sender_sp, &sender_sp) != PS_OK) { | |
| 1386 sender_sp = 0; | |
| 1387 } | |
| 1388 if (read_pointer(J, fp + OFFSET_interpreter_frame_bcx_offset, &bcx) != PS_OK) { | |
| 1389 bcx = 0; | |
| 1390 } | |
| 1391 #endif /* i386 */ | |
| 1392 | |
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1393 J->methodPtr = methodPtr; |
| 0 | 1394 J->bcx = bcx; |
| 1395 | |
| 1396 /* On x86 with C2 JVM: native frame may have wrong regs[R_FP] | |
| 1397 * For example: JVM_SuspendThread frame poins to the top interpreted frame. | |
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1398 * If we call is_method(J, methodPtr) before codecache_contains(J, pc) |
| 0 | 1399 * then we go over and omit both: nmethod and I2CAdapter frames. |
| 1400 * Note, that regs[R_PC] is always correct if frame defined correctly. | |
| 1401 * So it is better to call codecache_contains(J, pc) from the beginning. | |
| 1402 */ | |
| 1403 #ifndef X86_COMPILER2 | |
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1404 if (is_method(J, J->methodPtr)) { |
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1405 result = name_for_imethod(J, bcx, J->methodPtr, name, size, jframe); |
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1406 /* If the methodPtr is a method then this is highly likely to be |
| 0 | 1407 an interpreter frame */ |
| 1408 if (result >= 0) { | |
| 1409 is_interpreted = 1; | |
| 1410 } | |
| 1411 } else | |
| 1412 #endif /* ! X86_COMPILER2 */ | |
| 1413 | |
| 1414 if (codecache_contains(J, pc)) { | |
| 1415 result = name_for_codecache(J, fp, pc, name, size, jframe, &is_interpreted); | |
| 1416 } | |
| 1417 #ifdef X86_COMPILER2 | |
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1418 else if (is_method(J, J->methodPtr)) { |
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1419 result = name_for_imethod(J, bcx, J->methodPtr, name, size, jframe); |
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1420 /* If the methodPtr is a method then this is highly likely to be |
| 0 | 1421 an interpreter frame */ |
| 1422 if (result >= 0) { | |
| 1423 is_interpreted = 1; | |
| 1424 } | |
| 1425 } | |
| 1426 #endif /* X86_COMPILER2 */ | |
| 1427 else { | |
| 1428 if (debug) { | |
| 1429 fprintf(stderr, "Jlookup_by_regs: END with -1\n\n"); | |
| 1430 } | |
| 1431 result = -1; | |
| 1432 } | |
| 1433 if (!is_interpreted) { | |
| 1434 sender_sp = 0; | |
| 1435 } | |
| 1436 J->curr_fr.sender_sp = sender_sp; | |
| 1437 | |
| 1438 #ifdef X86_COMPILER2 | |
| 1439 if (!J->curr_fr.fp) { | |
| 1440 J->curr_fr.fp = (jframe->new_fp) ? jframe->new_fp : (uintptr_t)regs[R_FP]; | |
| 1441 } | |
| 1442 if (!jframe->new_pc && jframe->new_fp) { | |
| 1443 // This seems dubious | |
| 1444 read_pointer(J, jframe->new_fp + POINTER_SIZE, &jframe->new_pc); | |
| 1445 CHECK_FAIL(err); | |
| 1446 if (debug > 2) { | |
| 1447 printf("Jlookup_by_regs: (update pc) jframe->new_fp: %#llx, jframe->new_pc: %#llx\n", | |
| 1448 jframe->new_fp, jframe->new_pc); | |
| 1449 } | |
| 1450 } | |
| 1451 | |
| 1452 #endif /* X86_COMPILER2 */ | |
| 1453 J->prev_fr = J->curr_fr; | |
| 1454 | |
| 1455 if (debug) | |
| 1456 fprintf(stderr, "Jlookup_by_regs: END\n\n"); | |
| 1457 | |
| 1458 return result; | |
| 1459 | |
| 1460 fail: | |
| 1461 return err; | |
| 1462 } | |
| 1463 | |
| 1464 void update_gregs(prgregset_t gregs, Jframe_t jframe) { | |
| 1465 #ifdef X86_COMPILER2 | |
| 1466 if (debug > 0) { | |
| 1467 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]); | |
| 1468 } | |
| 1469 /* | |
| 1470 * A workaround for java C2 frames with unconventional FP. | |
| 1471 * may have to modify regset with new values for FP/PC/SP when needed. | |
| 1472 */ | |
| 1473 if (jframe.new_sp) { | |
| 1474 *((uintptr_t *) &gregs[R_SP]) = (uintptr_t) jframe.new_sp; | |
| 1475 } else { | |
| 1476 // *((uintptr_t *) &gregs[R_SP]) = (uintptr_t) gregs[R_FP] + 2 * POINTER_SIZE; | |
| 1477 } | |
| 1478 | |
| 1479 if (jframe.new_fp) { | |
| 1480 *((uintptr_t *) &gregs[R_FP]) = (uintptr_t) jframe.new_fp; | |
| 1481 } | |
| 1482 if (jframe.new_pc) { | |
| 1483 *((uintptr_t *) &gregs[R_PC]) = (uintptr_t) jframe.new_pc; | |
| 1484 } | |
| 1485 if (debug > 0) { | |
| 1486 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]); | |
| 1487 } | |
| 1488 #endif /* X86_COMPILER2 */ | |
| 1489 } | |
| 1490 | |
| 1491 /* | |
| 1492 * Iterates over java frames at current location given by 'gregs'. | |
| 1493 * | |
| 1494 * Returns -1 if no java frames are present or if an error is encountered. | |
| 1495 * Returns the result of calling 'func' if the return value is non-zero. | |
| 1496 * Returns 0 otherwise. | |
| 1497 */ | |
| 1498 int Jframe_iter(jvm_agent_t *J, prgregset_t gregs, java_stack_f *func, void* cld) { | |
| 1499 char buf[MAX_SYM_SIZE + 1]; | |
| 1500 Jframe_t jframe; | |
| 1501 int i = 0, res; | |
| 1502 #ifdef X86_COMPILER2 | |
| 1503 if (debug > 0) { | |
| 1504 fprintf(stderr, "Jframe_iter: Entry sp = 0x%llx, fp = 0x%llx, pc = 0x%llx\n", gregs[R_SP], gregs[R_FP], gregs[R_PC]); | |
| 1505 } | |
| 1506 #endif /* X86_COMPILER2 */ | |
| 1507 | |
| 1508 memset(&jframe, 0, sizeof(Jframe_t)); | |
| 1509 memset(buf, 0, sizeof(buf)); | |
| 1510 res = Jlookup_by_regs(J, gregs, buf, sizeof(buf), &jframe); | |
| 1511 if (res != PS_OK) | |
| 1512 return (-1); | |
| 1513 | |
| 1514 | |
| 1515 res = func(cld, gregs, buf, (jframe.locinf)? jframe.bci : -1, | |
| 1516 jframe.line, NULL); | |
| 1517 if (res != 0) { | |
| 1518 update_gregs(gregs, jframe); | |
| 1519 return (res); | |
| 1520 } | |
| 1521 for (i = 1; i < jframe.vf_cnt; i++) { | |
| 1522 Jget_vframe(J, i, buf, sizeof(buf), &jframe); | |
| 1523 res = func(cld, gregs, buf, (jframe.locinf)? jframe.bci : -1, | |
| 1524 jframe.line, NULL); | |
| 1525 if (res != 0) { | |
| 1526 update_gregs(gregs, jframe); | |
| 1527 return (res); | |
| 1528 } | |
| 1529 } | |
| 1530 update_gregs(gregs, jframe); | |
| 1531 return (0); | |
| 1532 } |