njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Code that is shared between MemCheck and AddrCheck. ---*/ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 4 | /*--- mac_needs.c ---*/ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 5 | /*--------------------------------------------------------------------*/ |
| 6 | |
| 7 | /* |
| 8 | This file is part of MemCheck, a heavyweight Valgrind skin for |
| 9 | detecting memory errors, and AddrCheck, a lightweight Valgrind skin |
| 10 | for detecting memory errors. |
| 11 | |
| 12 | Copyright (C) 2000-2002 Julian Seward |
| 13 | jseward@acm.org |
| 14 | |
| 15 | This program is free software; you can redistribute it and/or |
| 16 | modify it under the terms of the GNU General Public License as |
| 17 | published by the Free Software Foundation; either version 2 of the |
| 18 | License, or (at your option) any later version. |
| 19 | |
| 20 | This program is distributed in the hope that it will be useful, but |
| 21 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 23 | General Public License for more details. |
| 24 | |
| 25 | You should have received a copy of the GNU General Public License |
| 26 | along with this program; if not, write to the Free Software |
| 27 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 28 | 02111-1307, USA. |
| 29 | |
| 30 | The GNU General Public License is contained in the file COPYING. |
| 31 | */ |
| 32 | |
| 33 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 34 | #include "mac_shared.h" |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 35 | |
| 36 | /*------------------------------------------------------------*/ |
| 37 | /*--- Defns ---*/ |
| 38 | /*------------------------------------------------------------*/ |
| 39 | |
| 40 | /* These many bytes below %ESP are considered addressible if we're |
| 41 | doing the --workaround-gcc296-bugs hack. */ |
| 42 | #define VG_GCC296_BUG_STACK_SLOP 1024 |
| 43 | |
| 44 | /*------------------------------------------------------------*/ |
| 45 | /*--- Command line options ---*/ |
| 46 | /*------------------------------------------------------------*/ |
| 47 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 48 | Bool MAC_(clo_partial_loads_ok) = True; |
| 49 | Int MAC_(clo_freelist_vol) = 1000000; |
| 50 | Bool MAC_(clo_leak_check) = False; |
| 51 | VgRes MAC_(clo_leak_resolution) = Vg_LowRes; |
| 52 | Bool MAC_(clo_show_reachable) = False; |
| 53 | Bool MAC_(clo_workaround_gcc296_bugs) = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 54 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 55 | Bool MAC_(process_common_cmd_line_option)(Char* arg) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 56 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 57 | if (VG_CLO_STREQ(arg, "--partial-loads-ok=yes")) |
| 58 | MAC_(clo_partial_loads_ok) = True; |
| 59 | else if (VG_CLO_STREQ(arg, "--partial-loads-ok=no")) |
| 60 | MAC_(clo_partial_loads_ok) = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 61 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 62 | else if (VG_CLO_STREQN(15, arg, "--freelist-vol=")) { |
| 63 | MAC_(clo_freelist_vol) = (Int)VG_(atoll)(&arg[15]); |
| 64 | if (MAC_(clo_freelist_vol) < 0) MAC_(clo_freelist_vol) = 0; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 65 | } |
| 66 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 67 | else if (VG_CLO_STREQ(arg, "--leak-check=yes")) |
| 68 | MAC_(clo_leak_check) = True; |
| 69 | else if (VG_CLO_STREQ(arg, "--leak-check=no")) |
| 70 | MAC_(clo_leak_check) = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 71 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 72 | else if (VG_CLO_STREQ(arg, "--leak-resolution=low")) |
| 73 | MAC_(clo_leak_resolution) = Vg_LowRes; |
| 74 | else if (VG_CLO_STREQ(arg, "--leak-resolution=med")) |
| 75 | MAC_(clo_leak_resolution) = Vg_MedRes; |
| 76 | else if (VG_CLO_STREQ(arg, "--leak-resolution=high")) |
| 77 | MAC_(clo_leak_resolution) = Vg_HighRes; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 78 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 79 | else if (VG_CLO_STREQ(arg, "--show-reachable=yes")) |
| 80 | MAC_(clo_show_reachable) = True; |
| 81 | else if (VG_CLO_STREQ(arg, "--show-reachable=no")) |
| 82 | MAC_(clo_show_reachable) = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 83 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 84 | else if (VG_CLO_STREQ(arg, "--workaround-gcc296-bugs=yes")) |
| 85 | MAC_(clo_workaround_gcc296_bugs) = True; |
| 86 | else if (VG_CLO_STREQ(arg, "--workaround-gcc296-bugs=no")) |
| 87 | MAC_(clo_workaround_gcc296_bugs) = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 88 | |
| 89 | else |
| 90 | return False; |
| 91 | |
| 92 | return True; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 93 | } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 94 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 95 | /*------------------------------------------------------------*/ |
| 96 | /*--- Shadow chunks info ---*/ |
| 97 | /*------------------------------------------------------------*/ |
| 98 | |
| 99 | void MAC_(set_where)( ShadowChunk* sc, ExeContext* ec ) |
| 100 | { |
| 101 | VG_(set_sc_extra)( sc, 0, (UInt)ec ); |
| 102 | } |
| 103 | |
| 104 | ExeContext *MAC_(get_where)( ShadowChunk* sc ) |
| 105 | { |
| 106 | return (ExeContext*)VG_(get_sc_extra)(sc, 0); |
| 107 | } |
| 108 | |
| 109 | void SK_(complete_shadow_chunk) ( ShadowChunk* sc, ThreadState* tst ) |
| 110 | { |
| 111 | VG_(set_sc_extra) ( sc, 0, (UInt)VG_(get_ExeContext)(tst) ); |
| 112 | } |
| 113 | |
| 114 | |
| 115 | /*------------------------------------------------------------*/ |
| 116 | /*--- Postponing free()ing ---*/ |
| 117 | /*------------------------------------------------------------*/ |
| 118 | |
| 119 | /* Holds blocks after freeing. */ |
| 120 | static ShadowChunk* freed_list_start = NULL; |
| 121 | static ShadowChunk* freed_list_end = NULL; |
| 122 | static Int freed_list_volume = 0; |
| 123 | |
| 124 | __attribute__ ((unused)) |
| 125 | Int MAC_(count_freelist) ( void ) |
| 126 | { |
| 127 | ShadowChunk* sc; |
| 128 | Int n = 0; |
| 129 | for (sc = freed_list_start; sc != NULL; sc = VG_(get_sc_next)(sc)) |
| 130 | n++; |
| 131 | return n; |
| 132 | } |
| 133 | |
| 134 | __attribute__ ((unused)) |
| 135 | void MAC_(freelist_sanity) ( void ) |
| 136 | { |
| 137 | ShadowChunk* sc; |
| 138 | Int n = 0; |
| 139 | /* VG_(printf)("freelist sanity\n"); */ |
| 140 | for (sc = freed_list_start; sc != NULL; sc = VG_(get_sc_next)(sc)) |
| 141 | n += VG_(get_sc_size)(sc); |
| 142 | sk_assert(n == freed_list_volume); |
| 143 | } |
| 144 | |
| 145 | /* Put a shadow chunk on the freed blocks queue, possibly freeing up |
| 146 | some of the oldest blocks in the queue at the same time. */ |
| 147 | static void add_to_freed_queue ( ShadowChunk* sc ) |
| 148 | { |
| 149 | ShadowChunk* sc1; |
| 150 | |
| 151 | /* Put it at the end of the freed list */ |
| 152 | if (freed_list_end == NULL) { |
| 153 | sk_assert(freed_list_start == NULL); |
| 154 | freed_list_end = freed_list_start = sc; |
| 155 | freed_list_volume = VG_(get_sc_size)(sc); |
| 156 | } else { |
| 157 | sk_assert(VG_(get_sc_next)(freed_list_end) == NULL); |
| 158 | VG_(set_sc_next)(freed_list_end, sc); |
| 159 | freed_list_end = sc; |
| 160 | freed_list_volume += VG_(get_sc_size)(sc); |
| 161 | } |
| 162 | VG_(set_sc_next)(sc, NULL); |
| 163 | |
| 164 | /* Release enough of the oldest blocks to bring the free queue |
| 165 | volume below vg_clo_freelist_vol. */ |
| 166 | |
| 167 | while (freed_list_volume > MAC_(clo_freelist_vol)) { |
| 168 | /* freelist_sanity(); */ |
| 169 | sk_assert(freed_list_start != NULL); |
| 170 | sk_assert(freed_list_end != NULL); |
| 171 | |
| 172 | sc1 = freed_list_start; |
| 173 | freed_list_volume -= VG_(get_sc_size)(sc1); |
| 174 | /* VG_(printf)("volume now %d\n", freed_list_volume); */ |
| 175 | sk_assert(freed_list_volume >= 0); |
| 176 | |
| 177 | if (freed_list_start == freed_list_end) { |
| 178 | freed_list_start = freed_list_end = NULL; |
| 179 | } else { |
| 180 | freed_list_start = VG_(get_sc_next)(sc1); |
| 181 | } |
| 182 | VG_(set_sc_next)(sc1, NULL); /* just paranoia */ |
| 183 | VG_(free_ShadowChunk) ( sc1 ); |
| 184 | } |
| 185 | } |
| 186 | |
| 187 | void SK_(alt_free) ( ShadowChunk* sc, ThreadState* tst ) |
| 188 | { |
| 189 | /* Record where freed */ |
| 190 | MAC_(set_where)( sc, VG_(get_ExeContext) ( tst ) ); |
| 191 | |
| 192 | /* Put it out of harm's way for a while. */ |
| 193 | add_to_freed_queue ( sc ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 194 | } |
| 195 | |
| 196 | /*------------------------------------------------------------*/ |
| 197 | /*--- Comparing and printing errors ---*/ |
| 198 | /*------------------------------------------------------------*/ |
| 199 | |
| 200 | static __inline__ |
| 201 | void clear_AddrInfo ( AddrInfo* ai ) |
| 202 | { |
| 203 | ai->akind = Unknown; |
| 204 | ai->blksize = 0; |
| 205 | ai->rwoffset = 0; |
| 206 | ai->lastchange = NULL; |
| 207 | ai->stack_tid = VG_INVALID_THREADID; |
| 208 | ai->maybe_gcc = False; |
| 209 | } |
| 210 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 211 | void MAC_(clear_MAC_Error) ( MAC_Error* err_extra ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 212 | { |
| 213 | err_extra->axskind = ReadAxs; |
| 214 | err_extra->size = 0; |
| 215 | clear_AddrInfo ( &err_extra->addrinfo ); |
| 216 | err_extra->isWrite = False; |
| 217 | } |
| 218 | |
| 219 | __attribute__ ((unused)) |
| 220 | static Bool eq_AddrInfo ( VgRes res, AddrInfo* ai1, AddrInfo* ai2 ) |
| 221 | { |
| 222 | if (ai1->akind != Undescribed |
| 223 | && ai2->akind != Undescribed |
| 224 | && ai1->akind != ai2->akind) |
| 225 | return False; |
| 226 | if (ai1->akind == Freed || ai1->akind == Mallocd) { |
| 227 | if (ai1->blksize != ai2->blksize) |
| 228 | return False; |
| 229 | if (!VG_(eq_ExeContext)(res, ai1->lastchange, ai2->lastchange)) |
| 230 | return False; |
| 231 | } |
| 232 | return True; |
| 233 | } |
| 234 | |
| 235 | /* Compare error contexts, to detect duplicates. Note that if they |
| 236 | are otherwise the same, the faulting addrs and associated rwoffsets |
| 237 | are allowed to be different. */ |
| 238 | |
| 239 | Bool SK_(eq_SkinError) ( VgRes res, Error* e1, Error* e2 ) |
| 240 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 241 | MAC_Error* e1_extra = VG_(get_error_extra)(e1); |
| 242 | MAC_Error* e2_extra = VG_(get_error_extra)(e2); |
njn | 7cc53a8 | 2002-11-19 16:19:32 +0000 | [diff] [blame] | 243 | |
| 244 | /* Guaranteed by calling function */ |
| 245 | sk_assert(VG_(get_error_kind)(e1) == VG_(get_error_kind)(e2)); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 246 | |
| 247 | switch (VG_(get_error_kind)(e1)) { |
| 248 | case CoreMemErr: { |
| 249 | Char *e1s, *e2s; |
| 250 | if (e1_extra->isWrite != e2_extra->isWrite) return False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 251 | e1s = VG_(get_error_string)(e1); |
| 252 | e2s = VG_(get_error_string)(e2); |
| 253 | if (e1s == e2s) return True; |
| 254 | if (0 == VG_(strcmp)(e1s, e2s)) return True; |
| 255 | return False; |
| 256 | } |
| 257 | |
| 258 | case UserErr: |
| 259 | case ParamErr: |
| 260 | if (e1_extra->isWrite != e2_extra->isWrite) return False; |
| 261 | if (VG_(get_error_kind)(e1) == ParamErr |
| 262 | && 0 != VG_(strcmp)(VG_(get_error_string)(e1), |
| 263 | VG_(get_error_string)(e2))) return False; |
| 264 | return True; |
| 265 | |
| 266 | case FreeErr: |
| 267 | case FreeMismatchErr: |
| 268 | /* JRS 2002-Aug-26: comparing addrs seems overkill and can |
| 269 | cause excessive duplication of errors. Not even AddrErr |
| 270 | below does that. So don't compare either the .addr field |
| 271 | or the .addrinfo fields. */ |
| 272 | /* if (e1->addr != e2->addr) return False; */ |
| 273 | /* if (!eq_AddrInfo(res, &e1_extra->addrinfo, &e2_extra->addrinfo)) |
| 274 | return False; |
| 275 | */ |
| 276 | return True; |
| 277 | |
| 278 | case AddrErr: |
| 279 | /* if (e1_extra->axskind != e2_extra->axskind) return False; */ |
| 280 | if (e1_extra->size != e2_extra->size) return False; |
| 281 | /* |
| 282 | if (!eq_AddrInfo(res, &e1_extra->addrinfo, &e2_extra->addrinfo)) |
| 283 | return False; |
| 284 | */ |
| 285 | return True; |
| 286 | |
| 287 | case ValueErr: |
| 288 | if (e1_extra->size != e2_extra->size) return False; |
| 289 | return True; |
| 290 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 291 | case LeakErr: |
| 292 | VG_(skin_panic)("Shouldn't get LeakErr in SK_(eq_SkinError),\n" |
| 293 | "since it's handled with VG_(unique_error)()!"); |
| 294 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 295 | default: |
| 296 | VG_(printf)("Error:\n unknown error code %d\n", |
| 297 | VG_(get_error_kind)(e1)); |
| 298 | VG_(skin_panic)("unknown error code in SK_(eq_SkinError)"); |
| 299 | } |
| 300 | } |
| 301 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 302 | void MAC_(pp_AddrInfo) ( Addr a, AddrInfo* ai ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 303 | { |
| 304 | switch (ai->akind) { |
| 305 | case Stack: |
| 306 | VG_(message)(Vg_UserMsg, |
| 307 | " Address 0x%x is on thread %d's stack", |
| 308 | a, ai->stack_tid); |
| 309 | break; |
| 310 | case Unknown: |
| 311 | if (ai->maybe_gcc) { |
| 312 | VG_(message)(Vg_UserMsg, |
| 313 | " Address 0x%x is just below %%esp. Possibly a bug in GCC/G++", |
| 314 | a); |
| 315 | VG_(message)(Vg_UserMsg, |
| 316 | " v 2.96 or 3.0.X. To suppress, use: --workaround-gcc296-bugs=yes"); |
| 317 | } else { |
| 318 | VG_(message)(Vg_UserMsg, |
| 319 | " Address 0x%x is not stack'd, malloc'd or free'd", a); |
| 320 | } |
| 321 | break; |
sewardj | a81709d | 2002-12-28 12:55:48 +0000 | [diff] [blame] | 322 | case Freed: case Mallocd: case UserG: { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 323 | UInt delta; |
| 324 | UChar* relative; |
| 325 | if (ai->rwoffset < 0) { |
| 326 | delta = (UInt)(- ai->rwoffset); |
| 327 | relative = "before"; |
| 328 | } else if (ai->rwoffset >= ai->blksize) { |
| 329 | delta = ai->rwoffset - ai->blksize; |
| 330 | relative = "after"; |
| 331 | } else { |
| 332 | delta = ai->rwoffset; |
| 333 | relative = "inside"; |
| 334 | } |
sewardj | a81709d | 2002-12-28 12:55:48 +0000 | [diff] [blame] | 335 | VG_(message)(Vg_UserMsg, |
| 336 | " Address 0x%x is %d bytes %s a block of size %d %s", |
| 337 | a, delta, relative, |
| 338 | ai->blksize, |
| 339 | ai->akind==Mallocd ? "alloc'd" |
| 340 | : ai->akind==Freed ? "free'd" |
| 341 | : "client-defined"); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 342 | VG_(pp_ExeContext)(ai->lastchange); |
| 343 | break; |
| 344 | } |
| 345 | default: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 346 | VG_(skin_panic)("MAC_(pp_AddrInfo)"); |
| 347 | } |
| 348 | } |
| 349 | |
| 350 | /* This prints out the message for the error types where Memcheck and |
| 351 | Addrcheck have identical messages */ |
| 352 | void MAC_(pp_shared_SkinError) ( Error* err ) |
| 353 | { |
| 354 | MAC_Error* err_extra = VG_(get_error_extra)(err); |
| 355 | |
| 356 | switch (VG_(get_error_kind)(err)) { |
| 357 | case FreeErr: |
| 358 | VG_(message)(Vg_UserMsg,"Invalid free() / delete / delete[]"); |
| 359 | /* fall through */ |
| 360 | case FreeMismatchErr: |
| 361 | if (VG_(get_error_kind)(err) == FreeMismatchErr) |
| 362 | VG_(message)(Vg_UserMsg, |
| 363 | "Mismatched free() / delete / delete []"); |
| 364 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 365 | MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo); |
| 366 | break; |
| 367 | |
| 368 | case LeakErr: { |
| 369 | /* Totally abusing the types of these spare fields... oh well. */ |
| 370 | UInt n_this_record = (UInt)VG_(get_error_address)(err); |
| 371 | UInt n_total_records = (UInt)VG_(get_error_string) (err); |
| 372 | |
| 373 | MAC_(pp_LeakError)(err_extra, n_this_record, n_total_records); |
| 374 | break; |
| 375 | } |
| 376 | |
| 377 | default: |
| 378 | VG_(printf)("Error:\n unknown Memcheck/Addrcheck error code %d\n", |
| 379 | VG_(get_error_kind)(err)); |
| 380 | VG_(skin_panic)("unknown error code in MAC_(pp_shared_SkinError)"); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 381 | } |
| 382 | } |
| 383 | |
| 384 | /*------------------------------------------------------------*/ |
| 385 | /*--- Recording errors ---*/ |
| 386 | /*------------------------------------------------------------*/ |
| 387 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 388 | /* Additional description function for describe_addr(); used by |
| 389 | MemCheck for user blocks, which Addrcheck doesn't support. */ |
| 390 | Bool (*MAC_(describe_addr_supp)) ( Addr a, AddrInfo* ai ) = NULL; |
| 391 | |
| 392 | /* Return the first shadow chunk satisfying the predicate p. */ |
| 393 | static ShadowChunk* first_matching_freed_ShadowChunk ( Bool (*p)(ShadowChunk*) ) |
| 394 | { |
| 395 | ShadowChunk* sc; |
| 396 | |
| 397 | /* No point looking through freed blocks if we're not keeping |
| 398 | them around for a while... */ |
| 399 | for (sc = freed_list_start; sc != NULL; sc = VG_(get_sc_next)(sc)) |
| 400 | if (p(sc)) |
| 401 | return sc; |
| 402 | |
| 403 | return NULL; |
| 404 | } |
| 405 | |
| 406 | /* Describe an address as best you can, for error messages, |
| 407 | putting the result in ai. */ |
| 408 | static void describe_addr ( Addr a, AddrInfo* ai ) |
| 409 | { |
| 410 | ShadowChunk* sc; |
| 411 | ThreadId tid; |
| 412 | |
| 413 | /* Nested functions, yeah. Need the lexical scoping of 'a'. */ |
| 414 | |
| 415 | /* Closure for searching thread stacks */ |
| 416 | Bool addr_is_in_bounds(Addr stack_min, Addr stack_max) |
| 417 | { |
| 418 | return (stack_min <= a && a <= stack_max); |
| 419 | } |
| 420 | /* Closure for searching malloc'd and free'd lists */ |
| 421 | Bool addr_is_in_block(ShadowChunk *sh_ch) |
| 422 | { |
| 423 | return VG_(addr_is_in_block) ( a, VG_(get_sc_data)(sh_ch), |
| 424 | VG_(get_sc_size)(sh_ch) ); |
| 425 | } |
| 426 | |
| 427 | /* Perhaps it's a user-def'd block ? (only check if requested, though) */ |
| 428 | if (NULL != MAC_(describe_addr_supp)) { |
| 429 | if (MAC_(describe_addr_supp)( a, ai )) |
| 430 | return; |
| 431 | } |
| 432 | /* Perhaps it's on a thread's stack? */ |
| 433 | tid = VG_(first_matching_thread_stack)(addr_is_in_bounds); |
| 434 | if (tid != VG_INVALID_THREADID) { |
| 435 | ai->akind = Stack; |
| 436 | ai->stack_tid = tid; |
| 437 | return; |
| 438 | } |
| 439 | /* Search for a recently freed block which might bracket it. */ |
| 440 | sc = first_matching_freed_ShadowChunk(addr_is_in_block); |
| 441 | if (NULL != sc) { |
| 442 | ai->akind = Freed; |
| 443 | ai->blksize = VG_(get_sc_size)(sc); |
| 444 | ai->rwoffset = (Int)a - (Int)VG_(get_sc_data)(sc); |
| 445 | ai->lastchange = MAC_(get_where)(sc); |
| 446 | return; |
| 447 | } |
| 448 | /* Search for a currently malloc'd block which might bracket it. */ |
| 449 | sc = VG_(first_matching_mallocd_ShadowChunk)(addr_is_in_block); |
| 450 | if (NULL != sc) { |
| 451 | ai->akind = Mallocd; |
| 452 | ai->blksize = VG_(get_sc_size)(sc); |
| 453 | ai->rwoffset = (Int)a - (Int)VG_(get_sc_data)(sc); |
| 454 | ai->lastchange = MAC_(get_where)(sc); |
| 455 | return; |
| 456 | } |
| 457 | /* Clueless ... */ |
| 458 | ai->akind = Unknown; |
| 459 | return; |
| 460 | } |
| 461 | |
| 462 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 463 | /* Is this address within some small distance below %ESP? Used only |
| 464 | for the --workaround-gcc296-bugs kludge. */ |
| 465 | static Bool is_just_below_ESP( Addr esp, Addr aa ) |
| 466 | { |
| 467 | if ((UInt)esp > (UInt)aa |
| 468 | && ((UInt)esp - (UInt)aa) <= VG_GCC296_BUG_STACK_SLOP) |
| 469 | return True; |
| 470 | else |
| 471 | return False; |
| 472 | } |
| 473 | |
| 474 | /* This one called from generated code. */ |
| 475 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 476 | void MAC_(record_address_error) ( Addr a, Int size, Bool isWrite ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 477 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 478 | MAC_Error err_extra; |
| 479 | Bool just_below_esp; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 480 | |
| 481 | just_below_esp = is_just_below_ESP( VG_(get_stack_pointer)(), a ); |
| 482 | |
| 483 | /* If this is caused by an access immediately below %ESP, and the |
| 484 | user asks nicely, we just ignore it. */ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 485 | if (MAC_(clo_workaround_gcc296_bugs) && just_below_esp) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 486 | return; |
| 487 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 488 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 489 | err_extra.axskind = isWrite ? WriteAxs : ReadAxs; |
| 490 | err_extra.size = size; |
| 491 | err_extra.addrinfo.akind = Undescribed; |
| 492 | err_extra.addrinfo.maybe_gcc = just_below_esp; |
| 493 | VG_(maybe_record_error)( NULL, AddrErr, a, /*s*/NULL, &err_extra ); |
| 494 | } |
| 495 | |
| 496 | /* These ones are called from non-generated code */ |
| 497 | |
| 498 | /* This is for memory errors in pthread functions, as opposed to pthread API |
| 499 | errors which are found by the core. */ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 500 | void MAC_(record_core_mem_error) ( ThreadState* tst, Bool isWrite, Char* msg ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 501 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 502 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 503 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 504 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 505 | err_extra.isWrite = isWrite; |
| 506 | VG_(maybe_record_error)( tst, CoreMemErr, /*addr*/0, msg, &err_extra ); |
| 507 | } |
| 508 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 509 | void MAC_(record_param_error) ( ThreadState* tst, Addr a, Bool isWrite, |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 510 | Char* msg ) |
| 511 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 512 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 513 | |
| 514 | sk_assert(NULL != tst); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 515 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 516 | err_extra.addrinfo.akind = Undescribed; |
| 517 | err_extra.isWrite = isWrite; |
| 518 | VG_(maybe_record_error)( tst, ParamErr, a, msg, &err_extra ); |
| 519 | } |
| 520 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 521 | void MAC_(record_jump_error) ( ThreadState* tst, Addr a ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 522 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 523 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 524 | |
| 525 | sk_assert(NULL != tst); |
| 526 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 527 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 528 | err_extra.axskind = ExecAxs; |
| 529 | err_extra.addrinfo.akind = Undescribed; |
| 530 | VG_(maybe_record_error)( tst, AddrErr, a, /*s*/NULL, &err_extra ); |
| 531 | } |
| 532 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 533 | void MAC_(record_free_error) ( ThreadState* tst, Addr a ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 534 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 535 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 536 | |
| 537 | sk_assert(NULL != tst); |
| 538 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 539 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 540 | err_extra.addrinfo.akind = Undescribed; |
| 541 | VG_(maybe_record_error)( tst, FreeErr, a, /*s*/NULL, &err_extra ); |
| 542 | } |
| 543 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 544 | void MAC_(record_freemismatch_error) ( ThreadState* tst, Addr a ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 545 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 546 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 547 | |
| 548 | sk_assert(NULL != tst); |
| 549 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 550 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 551 | err_extra.addrinfo.akind = Undescribed; |
| 552 | VG_(maybe_record_error)( tst, FreeMismatchErr, a, /*s*/NULL, &err_extra ); |
| 553 | } |
| 554 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 555 | /* Updates the copy with address info if necessary (but not for LeakErrs). */ |
| 556 | UInt SK_(update_extra)( Error* err ) |
| 557 | { |
| 558 | MAC_Error* extra; |
| 559 | |
| 560 | /* Don't need to return the correct size -- LeakErrs are always shown with |
| 561 | VG_(unique_error)() so they're not copied anyway. */ |
| 562 | if (LeakErr == VG_(get_error_kind)(err)) |
| 563 | return 0; |
| 564 | |
| 565 | extra = (MAC_Error*)VG_(get_error_extra)(err); |
| 566 | |
| 567 | if (extra != NULL && Undescribed == extra->addrinfo.akind) { |
| 568 | describe_addr ( VG_(get_error_address)(err), &(extra->addrinfo) ); |
| 569 | } |
| 570 | |
| 571 | return sizeof(MAC_Error); |
| 572 | } |
| 573 | |
| 574 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 575 | /*------------------------------------------------------------*/ |
| 576 | /*--- Suppressions ---*/ |
| 577 | /*------------------------------------------------------------*/ |
| 578 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 579 | Bool MAC_(shared_recognised_suppression) ( Char* name, Supp* su ) |
| 580 | { |
| 581 | SuppKind skind; |
| 582 | |
| 583 | if (VG_STREQ(name, "Param")) skind = ParamSupp; |
| 584 | else if (VG_STREQ(name, "CoreMem")) skind = CoreMemSupp; |
| 585 | else if (VG_STREQ(name, "Addr1")) skind = Addr1Supp; |
| 586 | else if (VG_STREQ(name, "Addr2")) skind = Addr2Supp; |
| 587 | else if (VG_STREQ(name, "Addr4")) skind = Addr4Supp; |
| 588 | else if (VG_STREQ(name, "Addr8")) skind = Addr8Supp; |
| 589 | else if (VG_STREQ(name, "Free")) skind = FreeSupp; |
| 590 | else if (VG_STREQ(name, "Leak")) skind = LeakSupp; |
| 591 | else |
| 592 | return False; |
| 593 | |
| 594 | VG_(set_supp_kind)(su, skind); |
| 595 | return True; |
| 596 | } |
| 597 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 598 | Bool SK_(read_extra_suppression_info) ( Int fd, Char* buf, Int nBuf, Supp *su ) |
| 599 | { |
| 600 | Bool eof; |
| 601 | |
| 602 | if (VG_(get_supp_kind)(su) == ParamSupp) { |
| 603 | eof = VG_(get_line) ( fd, buf, nBuf ); |
| 604 | if (eof) return False; |
| 605 | VG_(set_supp_string)(su, VG_(strdup)(buf)); |
| 606 | } |
| 607 | return True; |
| 608 | } |
| 609 | |
sewardj | 99aac97 | 2002-12-26 01:53:45 +0000 | [diff] [blame] | 610 | Bool SK_(error_matches_suppression)(Error* err, Supp* su) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 611 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 612 | UInt su_size; |
| 613 | MAC_Error* err_extra = VG_(get_error_extra)(err); |
| 614 | ErrorKind ekind = VG_(get_error_kind )(err); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 615 | |
| 616 | switch (VG_(get_supp_kind)(su)) { |
| 617 | case ParamSupp: |
| 618 | return (ekind == ParamErr |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 619 | && VG_STREQ(VG_(get_error_string)(err), |
| 620 | VG_(get_supp_string)(su))); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 621 | |
| 622 | case CoreMemSupp: |
| 623 | return (ekind == CoreMemErr |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 624 | && VG_STREQ(VG_(get_error_string)(err), |
| 625 | VG_(get_supp_string)(su))); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 626 | |
| 627 | case Value0Supp: su_size = 0; goto value_case; |
| 628 | case Value1Supp: su_size = 1; goto value_case; |
| 629 | case Value2Supp: su_size = 2; goto value_case; |
| 630 | case Value4Supp: su_size = 4; goto value_case; |
| 631 | case Value8Supp: su_size = 8; goto value_case; |
| 632 | value_case: |
| 633 | return (ekind == ValueErr && err_extra->size == su_size); |
| 634 | |
| 635 | case Addr1Supp: su_size = 1; goto addr_case; |
| 636 | case Addr2Supp: su_size = 2; goto addr_case; |
| 637 | case Addr4Supp: su_size = 4; goto addr_case; |
| 638 | case Addr8Supp: su_size = 8; goto addr_case; |
| 639 | addr_case: |
| 640 | return (ekind == AddrErr && err_extra->size == su_size); |
| 641 | |
| 642 | case FreeSupp: |
| 643 | return (ekind == FreeErr || ekind == FreeMismatchErr); |
| 644 | |
sewardj | 4a19e2f | 2002-12-26 11:50:21 +0000 | [diff] [blame] | 645 | case LeakSupp: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 646 | return (ekind == LeakErr); |
sewardj | 4a19e2f | 2002-12-26 11:50:21 +0000 | [diff] [blame] | 647 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 648 | default: |
| 649 | VG_(printf)("Error:\n" |
| 650 | " unknown suppression type %d\n", |
| 651 | VG_(get_supp_kind)(su)); |
| 652 | VG_(skin_panic)("unknown suppression type in " |
| 653 | "SK_(error_matches_suppression)"); |
| 654 | } |
| 655 | } |
| 656 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 657 | Char* SK_(get_error_name) ( Error* err ) |
| 658 | { |
| 659 | Char* s; |
| 660 | switch (VG_(get_error_kind)(err)) { |
| 661 | case ParamErr: return "Param"; |
| 662 | case UserErr: return NULL; /* Can't suppress User errors */ |
| 663 | case FreeMismatchErr: return "Free"; |
| 664 | case FreeErr: return "Free"; |
| 665 | case AddrErr: |
| 666 | switch ( ((MAC_Error*)VG_(get_error_extra)(err))->size ) { |
| 667 | case 1: return "Addr1"; |
| 668 | case 2: return "Addr2"; |
| 669 | case 4: return "Addr4"; |
| 670 | case 8: return "Addr8"; |
| 671 | default: VG_(skin_panic)("unexpected size for Addr"); |
| 672 | } |
| 673 | |
| 674 | case ValueErr: |
| 675 | switch ( ((MAC_Error*)VG_(get_error_extra)(err))->size ) { |
| 676 | case 0: return "Cond"; |
| 677 | case 1: return "Value1"; |
| 678 | case 2: return "Value2"; |
| 679 | case 4: return "Value4"; |
| 680 | case 8: return "Value8"; |
| 681 | default: VG_(skin_panic)("unexpected size for Value"); |
| 682 | } |
| 683 | case CoreMemErr: return "CoreMem"; |
| 684 | case LeakErr: return "Leak"; |
| 685 | default: VG_(skin_panic)("get_error_name: unexpected type"); |
| 686 | } |
| 687 | VG_(printf)(s); |
| 688 | } |
| 689 | |
| 690 | void SK_(print_extra_suppression_info) ( Error* err ) |
| 691 | { |
| 692 | if (ParamErr == VG_(get_error_kind)(err)) { |
| 693 | VG_(printf)(" %s\n", VG_(get_error_string)(err)); |
| 694 | } |
| 695 | } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 696 | |
| 697 | /*------------------------------------------------------------*/ |
| 698 | /*--- Crude profiling machinery. ---*/ |
| 699 | /*------------------------------------------------------------*/ |
| 700 | |
| 701 | /* Event index. If just the name of the fn is given, this means the |
| 702 | number of calls to the fn. Otherwise it is the specified event. |
| 703 | Ones marked 'M' are MemCheck only. Ones marked 'A' are AddrCheck only. |
| 704 | The rest are shared. |
| 705 | |
| 706 | 10 alloc_secondary_map |
| 707 | |
| 708 | 20 get_abit |
| 709 | M 21 get_vbyte |
| 710 | 22 set_abit |
| 711 | M 23 set_vbyte |
| 712 | 24 get_abits4_ALIGNED |
| 713 | M 25 get_vbytes4_ALIGNED |
| 714 | |
| 715 | 30 set_address_range_perms |
| 716 | 31 set_address_range_perms(lower byte loop) |
| 717 | 32 set_address_range_perms(quadword loop) |
| 718 | 33 set_address_range_perms(upper byte loop) |
| 719 | |
| 720 | 35 make_noaccess |
| 721 | 36 make_writable |
| 722 | 37 make_readable |
| 723 | A 38 make_accessible |
| 724 | |
| 725 | 40 copy_address_range_state |
| 726 | 41 copy_address_range_state(byte loop) |
| 727 | 42 check_writable |
| 728 | 43 check_writable(byte loop) |
| 729 | 44 check_readable |
| 730 | 45 check_readable(byte loop) |
| 731 | 46 check_readable_asciiz |
| 732 | 47 check_readable_asciiz(byte loop) |
| 733 | A 48 check_accessible |
| 734 | A 49 check_accessible(byte loop) |
| 735 | |
| 736 | 50 make_noaccess_aligned |
| 737 | 51 make_writable_aligned |
| 738 | |
| 739 | M 60 helperc_LOADV4 |
| 740 | M 61 helperc_STOREV4 |
| 741 | M 62 helperc_LOADV2 |
| 742 | M 63 helperc_STOREV2 |
| 743 | M 64 helperc_LOADV1 |
| 744 | M 65 helperc_STOREV1 |
| 745 | |
| 746 | A 66 helperc_ACCESS4 |
| 747 | A 67 helperc_ACCESS2 |
| 748 | A 68 helperc_ACCESS1 |
| 749 | |
| 750 | M 70 rim_rd_V4_SLOWLY |
| 751 | M 71 rim_wr_V4_SLOWLY |
| 752 | M 72 rim_rd_V2_SLOWLY |
| 753 | M 73 rim_wr_V2_SLOWLY |
| 754 | M 74 rim_rd_V1_SLOWLY |
| 755 | M 75 rim_wr_V1_SLOWLY |
| 756 | |
| 757 | A 76 ACCESS4_SLOWLY |
| 758 | A 77 ACCESS2_SLOWLY |
| 759 | A 78 ACCESS1_SLOWLY |
| 760 | |
| 761 | 80 fpu_read |
| 762 | 81 fpu_read aligned 4 |
| 763 | 82 fpu_read aligned 8 |
| 764 | 83 fpu_read 2 |
| 765 | 84 fpu_read 10/28/108 |
| 766 | |
| 767 | M 85 fpu_write |
| 768 | M 86 fpu_write aligned 4 |
| 769 | M 87 fpu_write aligned 8 |
| 770 | M 88 fpu_write 2 |
| 771 | M 89 fpu_write 10/28/108 |
| 772 | |
| 773 | 90 fpu_access |
| 774 | 91 fpu_access aligned 4 |
| 775 | 92 fpu_access aligned 8 |
| 776 | 93 fpu_access 2 |
| 777 | 94 fpu_access 10/28/108 |
| 778 | |
| 779 | 100 fpu_access_check_SLOWLY |
| 780 | 101 fpu_access_check_SLOWLY(byte loop) |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 781 | |
| 782 | 110 new_mem_stack_4 |
| 783 | 111 new_mem_stack_8 |
| 784 | 112 new_mem_stack_12 |
| 785 | 113 new_mem_stack_16 |
| 786 | 114 new_mem_stack_32 |
| 787 | 115 new_mem_stack |
| 788 | |
| 789 | 120 die_mem_stack_4 |
| 790 | 121 die_mem_stack_8 |
| 791 | 122 die_mem_stack_12 |
| 792 | 123 die_mem_stack_16 |
| 793 | 124 die_mem_stack_32 |
| 794 | 125 die_mem_stack |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 795 | */ |
| 796 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 797 | #ifdef MAC_PROFILE_MEMORY |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 798 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 799 | UInt MAC_(event_ctr)[N_PROF_EVENTS]; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 800 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 801 | void MAC_(init_prof_mem) ( void ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 802 | { |
| 803 | Int i; |
| 804 | for (i = 0; i < N_PROF_EVENTS; i++) |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 805 | MAC_(event_ctr)[i] = 0; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 806 | } |
| 807 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 808 | void MAC_(done_prof_mem) ( void ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 809 | { |
| 810 | Int i; |
| 811 | for (i = 0; i < N_PROF_EVENTS; i++) { |
| 812 | if ((i % 10) == 0) |
| 813 | VG_(printf)("\n"); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 814 | if (MAC_(event_ctr)[i] > 0) |
| 815 | VG_(printf)( "prof mem event %2d: %d\n", i, MAC_(event_ctr)[i] ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 816 | } |
| 817 | VG_(printf)("\n"); |
| 818 | } |
| 819 | |
| 820 | #else |
| 821 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 822 | void MAC_(init_prof_mem) ( void ) { } |
| 823 | void MAC_(done_prof_mem) ( void ) { } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 824 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 825 | #endif |
| 826 | |
| 827 | /*------------------------------------------------------------*/ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 828 | /*--- Syscall wrappers ---*/ |
| 829 | /*------------------------------------------------------------*/ |
| 830 | |
| 831 | void* SK_(pre_syscall) ( ThreadId tid, UInt syscallno, Bool isBlocking ) |
| 832 | { |
| 833 | Int sane = SK_(cheap_sanity_check)(); |
| 834 | return (void*)sane; |
| 835 | } |
| 836 | |
| 837 | void SK_(post_syscall) ( ThreadId tid, UInt syscallno, |
| 838 | void* pre_result, Int res, Bool isBlocking ) |
| 839 | { |
| 840 | Int sane_before_call = (Int)pre_result; |
| 841 | Bool sane_after_call = SK_(cheap_sanity_check)(); |
| 842 | |
| 843 | if ((Int)sane_before_call && (!sane_after_call)) { |
| 844 | VG_(message)(Vg_DebugMsg, "post-syscall: "); |
| 845 | VG_(message)(Vg_DebugMsg, |
| 846 | "probable sanity check failure for syscall number %d\n", |
| 847 | syscallno ); |
| 848 | VG_(skin_panic)("aborting due to the above ... bye!"); |
| 849 | } |
| 850 | } |
| 851 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 852 | /*--------------------------------------------------------------------*/ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame^] | 853 | /*--- end mac_needs.c ---*/ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 854 | /*--------------------------------------------------------------------*/ |