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 | /* |
nethercote | 137bc55 | 2003-11-14 17:47:54 +0000 | [diff] [blame] | 8 | This file is part of MemCheck, a heavyweight Valgrind tool for |
| 9 | detecting memory errors, and AddrCheck, a lightweight Valgrind tool |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 10 | for detecting memory errors. |
| 11 | |
nethercote | bb1c991 | 2004-01-04 16:43:23 +0000 | [diff] [blame] | 12 | Copyright (C) 2000-2004 Julian Seward |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 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 | |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 36 | #include "memcheck.h" /* for VG_USERREQ__* */ |
| 37 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 38 | /*------------------------------------------------------------*/ |
| 39 | /*--- Defns ---*/ |
| 40 | /*------------------------------------------------------------*/ |
| 41 | |
| 42 | /* These many bytes below %ESP are considered addressible if we're |
| 43 | doing the --workaround-gcc296-bugs hack. */ |
| 44 | #define VG_GCC296_BUG_STACK_SLOP 1024 |
| 45 | |
| 46 | /*------------------------------------------------------------*/ |
| 47 | /*--- Command line options ---*/ |
| 48 | /*------------------------------------------------------------*/ |
| 49 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 50 | Bool MAC_(clo_partial_loads_ok) = True; |
| 51 | Int MAC_(clo_freelist_vol) = 1000000; |
| 52 | Bool MAC_(clo_leak_check) = False; |
| 53 | VgRes MAC_(clo_leak_resolution) = Vg_LowRes; |
| 54 | Bool MAC_(clo_show_reachable) = False; |
| 55 | Bool MAC_(clo_workaround_gcc296_bugs) = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 56 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 57 | Bool MAC_(process_common_cmd_line_option)(Char* arg) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 58 | { |
nethercote | 27fec90 | 2004-06-16 21:26:32 +0000 | [diff] [blame] | 59 | VG_BOOL_CLO("--leak-check", MAC_(clo_leak_check)) |
| 60 | else VG_BOOL_CLO("--partial-loads-ok", MAC_(clo_partial_loads_ok)) |
| 61 | else VG_BOOL_CLO("--show-reachable", MAC_(clo_show_reachable)) |
| 62 | else VG_BOOL_CLO("--workaround-gcc296-bugs",MAC_(clo_workaround_gcc296_bugs)) |
| 63 | |
| 64 | else VG_BNUM_CLO("--freelist-vol", MAC_(clo_freelist_vol), 0, 1000000000) |
| 65 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 66 | else if (VG_CLO_STREQ(arg, "--leak-resolution=low")) |
| 67 | MAC_(clo_leak_resolution) = Vg_LowRes; |
| 68 | else if (VG_CLO_STREQ(arg, "--leak-resolution=med")) |
| 69 | MAC_(clo_leak_resolution) = Vg_MedRes; |
| 70 | else if (VG_CLO_STREQ(arg, "--leak-resolution=high")) |
| 71 | MAC_(clo_leak_resolution) = Vg_HighRes; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 72 | |
| 73 | else |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 74 | return VG_(replacement_malloc_process_cmd_line_option)(arg); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 75 | |
| 76 | return True; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 77 | } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 78 | |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 79 | void MAC_(print_common_usage)(void) |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 80 | { |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 81 | VG_(printf)( |
| 82 | " --partial-loads-ok=no|yes too hard to explain here; see manual [yes]\n" |
| 83 | " --freelist-vol=<number> volume of freed blocks queue [1000000]\n" |
| 84 | " --leak-check=no|yes search for memory leaks at exit? [no]\n" |
| 85 | " --leak-resolution=low|med|high how much bt merging in leak check [low]\n" |
| 86 | " --show-reachable=no|yes show reachable blocks in leak check? [no]\n" |
| 87 | " --workaround-gcc296-bugs=no|yes self explanatory [no]\n" |
| 88 | ); |
| 89 | VG_(replacement_malloc_print_usage)(); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 90 | } |
| 91 | |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 92 | void MAC_(print_common_debug_usage)(void) |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 93 | { |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 94 | VG_(replacement_malloc_print_debug_usage)(); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 95 | } |
| 96 | |
| 97 | /*------------------------------------------------------------*/ |
| 98 | /*--- Comparing and printing errors ---*/ |
| 99 | /*------------------------------------------------------------*/ |
| 100 | |
| 101 | static __inline__ |
| 102 | void clear_AddrInfo ( AddrInfo* ai ) |
| 103 | { |
| 104 | ai->akind = Unknown; |
| 105 | ai->blksize = 0; |
| 106 | ai->rwoffset = 0; |
| 107 | ai->lastchange = NULL; |
| 108 | ai->stack_tid = VG_INVALID_THREADID; |
| 109 | ai->maybe_gcc = False; |
| 110 | } |
| 111 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 112 | void MAC_(clear_MAC_Error) ( MAC_Error* err_extra ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 113 | { |
| 114 | err_extra->axskind = ReadAxs; |
| 115 | err_extra->size = 0; |
| 116 | clear_AddrInfo ( &err_extra->addrinfo ); |
| 117 | err_extra->isWrite = False; |
| 118 | } |
| 119 | |
| 120 | __attribute__ ((unused)) |
| 121 | static Bool eq_AddrInfo ( VgRes res, AddrInfo* ai1, AddrInfo* ai2 ) |
| 122 | { |
| 123 | if (ai1->akind != Undescribed |
| 124 | && ai2->akind != Undescribed |
| 125 | && ai1->akind != ai2->akind) |
| 126 | return False; |
| 127 | if (ai1->akind == Freed || ai1->akind == Mallocd) { |
| 128 | if (ai1->blksize != ai2->blksize) |
| 129 | return False; |
| 130 | if (!VG_(eq_ExeContext)(res, ai1->lastchange, ai2->lastchange)) |
| 131 | return False; |
| 132 | } |
| 133 | return True; |
| 134 | } |
| 135 | |
| 136 | /* Compare error contexts, to detect duplicates. Note that if they |
| 137 | are otherwise the same, the faulting addrs and associated rwoffsets |
| 138 | are allowed to be different. */ |
| 139 | |
| 140 | Bool SK_(eq_SkinError) ( VgRes res, Error* e1, Error* e2 ) |
| 141 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 142 | MAC_Error* e1_extra = VG_(get_error_extra)(e1); |
| 143 | MAC_Error* e2_extra = VG_(get_error_extra)(e2); |
njn | 7cc53a8 | 2002-11-19 16:19:32 +0000 | [diff] [blame] | 144 | |
| 145 | /* Guaranteed by calling function */ |
| 146 | sk_assert(VG_(get_error_kind)(e1) == VG_(get_error_kind)(e2)); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 147 | |
| 148 | switch (VG_(get_error_kind)(e1)) { |
| 149 | case CoreMemErr: { |
| 150 | Char *e1s, *e2s; |
| 151 | if (e1_extra->isWrite != e2_extra->isWrite) return False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 152 | e1s = VG_(get_error_string)(e1); |
| 153 | e2s = VG_(get_error_string)(e2); |
| 154 | if (e1s == e2s) return True; |
| 155 | if (0 == VG_(strcmp)(e1s, e2s)) return True; |
| 156 | return False; |
| 157 | } |
| 158 | |
| 159 | case UserErr: |
| 160 | case ParamErr: |
| 161 | if (e1_extra->isWrite != e2_extra->isWrite) return False; |
| 162 | if (VG_(get_error_kind)(e1) == ParamErr |
| 163 | && 0 != VG_(strcmp)(VG_(get_error_string)(e1), |
| 164 | VG_(get_error_string)(e2))) return False; |
| 165 | return True; |
| 166 | |
| 167 | case FreeErr: |
| 168 | case FreeMismatchErr: |
| 169 | /* JRS 2002-Aug-26: comparing addrs seems overkill and can |
| 170 | cause excessive duplication of errors. Not even AddrErr |
| 171 | below does that. So don't compare either the .addr field |
| 172 | or the .addrinfo fields. */ |
| 173 | /* if (e1->addr != e2->addr) return False; */ |
| 174 | /* if (!eq_AddrInfo(res, &e1_extra->addrinfo, &e2_extra->addrinfo)) |
| 175 | return False; |
| 176 | */ |
| 177 | return True; |
| 178 | |
| 179 | case AddrErr: |
| 180 | /* if (e1_extra->axskind != e2_extra->axskind) return False; */ |
| 181 | if (e1_extra->size != e2_extra->size) return False; |
| 182 | /* |
| 183 | if (!eq_AddrInfo(res, &e1_extra->addrinfo, &e2_extra->addrinfo)) |
| 184 | return False; |
| 185 | */ |
| 186 | return True; |
| 187 | |
| 188 | case ValueErr: |
| 189 | if (e1_extra->size != e2_extra->size) return False; |
| 190 | return True; |
| 191 | |
njn | 34419c1 | 2003-05-02 17:24:29 +0000 | [diff] [blame] | 192 | case OverlapErr: |
| 193 | return True; |
| 194 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 195 | case LeakErr: |
| 196 | VG_(skin_panic)("Shouldn't get LeakErr in SK_(eq_SkinError),\n" |
| 197 | "since it's handled with VG_(unique_error)()!"); |
| 198 | |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 199 | case IllegalMempoolErr: |
| 200 | return True; |
| 201 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 202 | default: |
| 203 | VG_(printf)("Error:\n unknown error code %d\n", |
| 204 | VG_(get_error_kind)(e1)); |
| 205 | VG_(skin_panic)("unknown error code in SK_(eq_SkinError)"); |
| 206 | } |
| 207 | } |
| 208 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 209 | void MAC_(pp_AddrInfo) ( Addr a, AddrInfo* ai ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 210 | { |
| 211 | switch (ai->akind) { |
| 212 | case Stack: |
| 213 | VG_(message)(Vg_UserMsg, |
nethercote | 3b390c7 | 2003-11-13 17:53:43 +0000 | [diff] [blame] | 214 | " Address 0x%x is on thread %d's stack", |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 215 | a, ai->stack_tid); |
| 216 | break; |
| 217 | case Unknown: |
| 218 | if (ai->maybe_gcc) { |
| 219 | VG_(message)(Vg_UserMsg, |
nethercote | 3b390c7 | 2003-11-13 17:53:43 +0000 | [diff] [blame] | 220 | " Address 0x%x is just below %%esp. Possibly a bug in GCC/G++", |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 221 | a); |
| 222 | VG_(message)(Vg_UserMsg, |
nethercote | 3b390c7 | 2003-11-13 17:53:43 +0000 | [diff] [blame] | 223 | " v 2.96 or 3.0.X. To suppress, use: --workaround-gcc296-bugs=yes"); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 224 | } else { |
| 225 | VG_(message)(Vg_UserMsg, |
nethercote | f798eee | 2004-04-13 08:36:35 +0000 | [diff] [blame] | 226 | " Address 0x%x is not stack'd, malloc'd or (recently) free'd",a); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 227 | } |
| 228 | break; |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 229 | case Freed: case Mallocd: case UserG: case Mempool: { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 230 | UInt delta; |
| 231 | UChar* relative; |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 232 | UChar* kind; |
| 233 | if (ai->akind == Mempool) { |
| 234 | kind = "mempool"; |
| 235 | } else { |
| 236 | kind = "block"; |
| 237 | } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 238 | if (ai->rwoffset < 0) { |
| 239 | delta = (UInt)(- ai->rwoffset); |
| 240 | relative = "before"; |
| 241 | } else if (ai->rwoffset >= ai->blksize) { |
| 242 | delta = ai->rwoffset - ai->blksize; |
| 243 | relative = "after"; |
| 244 | } else { |
| 245 | delta = ai->rwoffset; |
| 246 | relative = "inside"; |
| 247 | } |
sewardj | a81709d | 2002-12-28 12:55:48 +0000 | [diff] [blame] | 248 | VG_(message)(Vg_UserMsg, |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 249 | " Address 0x%x is %d bytes %s a %s of size %d %s", |
| 250 | a, delta, relative, kind, |
sewardj | a81709d | 2002-12-28 12:55:48 +0000 | [diff] [blame] | 251 | ai->blksize, |
| 252 | ai->akind==Mallocd ? "alloc'd" |
| 253 | : ai->akind==Freed ? "free'd" |
| 254 | : "client-defined"); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 255 | VG_(pp_ExeContext)(ai->lastchange); |
| 256 | break; |
| 257 | } |
| 258 | default: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 259 | VG_(skin_panic)("MAC_(pp_AddrInfo)"); |
| 260 | } |
| 261 | } |
| 262 | |
| 263 | /* This prints out the message for the error types where Memcheck and |
| 264 | Addrcheck have identical messages */ |
| 265 | void MAC_(pp_shared_SkinError) ( Error* err ) |
| 266 | { |
| 267 | MAC_Error* err_extra = VG_(get_error_extra)(err); |
| 268 | |
| 269 | switch (VG_(get_error_kind)(err)) { |
| 270 | case FreeErr: |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 271 | VG_(message)(Vg_UserMsg, "Invalid free() / delete / delete[]"); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 272 | /* fall through */ |
| 273 | case FreeMismatchErr: |
| 274 | if (VG_(get_error_kind)(err) == FreeMismatchErr) |
| 275 | VG_(message)(Vg_UserMsg, |
| 276 | "Mismatched free() / delete / delete []"); |
| 277 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 278 | MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo); |
| 279 | break; |
| 280 | |
njn | 89409f8 | 2003-09-26 14:55:31 +0000 | [diff] [blame] | 281 | case AddrErr: |
| 282 | switch (err_extra->axskind) { |
| 283 | case ReadAxs: |
| 284 | VG_(message)(Vg_UserMsg, "Invalid read of size %d", |
| 285 | err_extra->size ); |
| 286 | break; |
| 287 | case WriteAxs: |
| 288 | VG_(message)(Vg_UserMsg, "Invalid write of size %d", |
| 289 | err_extra->size ); |
| 290 | break; |
| 291 | case ExecAxs: |
| 292 | VG_(message)(Vg_UserMsg, "Jump to the invalid address " |
| 293 | "stated on the next line"); |
| 294 | break; |
| 295 | default: |
| 296 | VG_(skin_panic)("SK_(pp_SkinError)(axskind)"); |
| 297 | } |
| 298 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 299 | MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo); |
| 300 | break; |
| 301 | |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 302 | case OverlapErr: { |
| 303 | OverlapExtra* ov_extra = (OverlapExtra*)VG_(get_error_extra)(err); |
| 304 | if (ov_extra->len == -1) |
| 305 | VG_(message)(Vg_UserMsg, |
| 306 | "Source and destination overlap in %s(%p, %p)", |
| 307 | VG_(get_error_string)(err), |
| 308 | ov_extra->dst, ov_extra->src); |
| 309 | else |
| 310 | VG_(message)(Vg_UserMsg, |
| 311 | "Source and destination overlap in %s(%p, %p, %d)", |
| 312 | VG_(get_error_string)(err), |
| 313 | ov_extra->dst, ov_extra->src, ov_extra->len); |
njn | 66fe05a | 2003-07-22 09:12:33 +0000 | [diff] [blame] | 314 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 315 | break; |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 316 | } |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 317 | case LeakErr: { |
| 318 | /* Totally abusing the types of these spare fields... oh well. */ |
| 319 | UInt n_this_record = (UInt)VG_(get_error_address)(err); |
| 320 | UInt n_total_records = (UInt)VG_(get_error_string) (err); |
| 321 | |
| 322 | MAC_(pp_LeakError)(err_extra, n_this_record, n_total_records); |
| 323 | break; |
| 324 | } |
| 325 | |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 326 | case IllegalMempoolErr: |
| 327 | VG_(message)(Vg_UserMsg, "Illegal memory pool address"); |
| 328 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 329 | MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo); |
| 330 | break; |
| 331 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 332 | default: |
| 333 | VG_(printf)("Error:\n unknown Memcheck/Addrcheck error code %d\n", |
| 334 | VG_(get_error_kind)(err)); |
| 335 | VG_(skin_panic)("unknown error code in MAC_(pp_shared_SkinError)"); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 336 | } |
| 337 | } |
| 338 | |
| 339 | /*------------------------------------------------------------*/ |
| 340 | /*--- Recording errors ---*/ |
| 341 | /*------------------------------------------------------------*/ |
| 342 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 343 | /* Additional description function for describe_addr(); used by |
| 344 | MemCheck for user blocks, which Addrcheck doesn't support. */ |
| 345 | Bool (*MAC_(describe_addr_supp)) ( Addr a, AddrInfo* ai ) = NULL; |
thughes | 4ad52d0 | 2004-06-27 17:37:21 +0000 | [diff] [blame] | 346 | |
| 347 | /* Callback for searching thread stacks */ |
| 348 | static Bool addr_is_in_bounds(Addr stack_min, Addr stack_max, void *ap) |
| 349 | { |
| 350 | Addr a = *(Addr *)ap; |
| 351 | |
| 352 | return (stack_min <= a && a <= stack_max); |
| 353 | } |
| 354 | |
| 355 | /* Callback for searching free'd list */ |
| 356 | static Bool addr_is_in_MAC_Chunk(MAC_Chunk* mc, void *ap) |
| 357 | { |
| 358 | Addr a = *(Addr *)ap; |
| 359 | |
| 360 | return VG_(addr_is_in_block)( a, mc->data, mc->size ); |
| 361 | } |
| 362 | |
| 363 | /* Callback for searching malloc'd lists */ |
| 364 | static Bool addr_is_in_HashNode(VgHashNode* sh_ch, void *ap) |
| 365 | { |
| 366 | return addr_is_in_MAC_Chunk( (MAC_Chunk*)sh_ch, ap ); |
| 367 | } |
| 368 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 369 | /* Describe an address as best you can, for error messages, |
| 370 | putting the result in ai. */ |
| 371 | static void describe_addr ( Addr a, AddrInfo* ai ) |
| 372 | { |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 373 | MAC_Chunk* sc; |
| 374 | ThreadId tid; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 375 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 376 | /* Perhaps it's a user-def'd block ? (only check if requested, though) */ |
| 377 | if (NULL != MAC_(describe_addr_supp)) { |
| 378 | if (MAC_(describe_addr_supp)( a, ai )) |
| 379 | return; |
| 380 | } |
| 381 | /* Perhaps it's on a thread's stack? */ |
thughes | 4ad52d0 | 2004-06-27 17:37:21 +0000 | [diff] [blame] | 382 | tid = VG_(first_matching_thread_stack)(addr_is_in_bounds, &a); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 383 | if (tid != VG_INVALID_THREADID) { |
| 384 | ai->akind = Stack; |
| 385 | ai->stack_tid = tid; |
| 386 | return; |
| 387 | } |
| 388 | /* Search for a recently freed block which might bracket it. */ |
thughes | 4ad52d0 | 2004-06-27 17:37:21 +0000 | [diff] [blame] | 389 | sc = MAC_(first_matching_freed_MAC_Chunk)(addr_is_in_MAC_Chunk, &a); |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 390 | if (NULL != sc) { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 391 | ai->akind = Freed; |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 392 | ai->blksize = sc->size; |
| 393 | ai->rwoffset = (Int)a - (Int)sc->data; |
| 394 | ai->lastchange = sc->where; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 395 | return; |
| 396 | } |
| 397 | /* Search for a currently malloc'd block which might bracket it. */ |
thughes | 4ad52d0 | 2004-06-27 17:37:21 +0000 | [diff] [blame] | 398 | sc = (MAC_Chunk*)VG_(HT_first_match)(MAC_(malloc_list), addr_is_in_HashNode, &a); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 399 | if (NULL != sc) { |
| 400 | ai->akind = Mallocd; |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 401 | ai->blksize = sc->size; |
| 402 | ai->rwoffset = (Int)(a) - (Int)sc->data; |
| 403 | ai->lastchange = sc->where; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 404 | return; |
| 405 | } |
| 406 | /* Clueless ... */ |
| 407 | ai->akind = Unknown; |
| 408 | return; |
| 409 | } |
| 410 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 411 | /* Is this address within some small distance below %ESP? Used only |
| 412 | for the --workaround-gcc296-bugs kludge. */ |
| 413 | static Bool is_just_below_ESP( Addr esp, Addr aa ) |
| 414 | { |
| 415 | if ((UInt)esp > (UInt)aa |
| 416 | && ((UInt)esp - (UInt)aa) <= VG_GCC296_BUG_STACK_SLOP) |
| 417 | return True; |
| 418 | else |
| 419 | return False; |
| 420 | } |
| 421 | |
sewardj | af48a60 | 2003-07-06 00:54:47 +0000 | [diff] [blame] | 422 | /* This one called from generated code and non-generated code. */ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 423 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 424 | void MAC_(record_address_error) ( ThreadId tid, Addr a, Int size, |
sewardj | af48a60 | 2003-07-06 00:54:47 +0000 | [diff] [blame] | 425 | Bool isWrite ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 426 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 427 | MAC_Error err_extra; |
| 428 | Bool just_below_esp; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 429 | |
| 430 | just_below_esp = is_just_below_ESP( VG_(get_stack_pointer)(), a ); |
| 431 | |
| 432 | /* If this is caused by an access immediately below %ESP, and the |
| 433 | user asks nicely, we just ignore it. */ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 434 | if (MAC_(clo_workaround_gcc296_bugs) && just_below_esp) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 435 | return; |
| 436 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 437 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 438 | err_extra.axskind = isWrite ? WriteAxs : ReadAxs; |
| 439 | err_extra.size = size; |
| 440 | err_extra.addrinfo.akind = Undescribed; |
| 441 | err_extra.addrinfo.maybe_gcc = just_below_esp; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 442 | VG_(maybe_record_error)( tid, AddrErr, a, /*s*/NULL, &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 443 | } |
| 444 | |
| 445 | /* These ones are called from non-generated code */ |
| 446 | |
| 447 | /* This is for memory errors in pthread functions, as opposed to pthread API |
| 448 | errors which are found by the core. */ |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 449 | void MAC_(record_core_mem_error) ( ThreadId tid, Bool isWrite, Char* msg ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 450 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 451 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 452 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 453 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 454 | err_extra.isWrite = isWrite; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 455 | VG_(maybe_record_error)( tid, CoreMemErr, /*addr*/0, msg, &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 456 | } |
| 457 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 458 | void MAC_(record_param_error) ( ThreadId tid, Addr a, Bool isWrite, |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 459 | Char* msg ) |
| 460 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 461 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 462 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 463 | sk_assert(VG_INVALID_THREADID != tid); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 464 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 465 | err_extra.addrinfo.akind = Undescribed; |
| 466 | err_extra.isWrite = isWrite; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 467 | VG_(maybe_record_error)( tid, ParamErr, a, msg, &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 468 | } |
| 469 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 470 | void MAC_(record_jump_error) ( ThreadId tid, Addr a ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 471 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 472 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 473 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 474 | sk_assert(VG_INVALID_THREADID != tid); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 475 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 476 | err_extra.axskind = ExecAxs; |
nethercote | 7250b8f | 2004-04-13 08:47:35 +0000 | [diff] [blame] | 477 | err_extra.size = 1; // size only used for suppressions |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 478 | err_extra.addrinfo.akind = Undescribed; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 479 | VG_(maybe_record_error)( tid, AddrErr, a, /*s*/NULL, &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 480 | } |
| 481 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 482 | void MAC_(record_free_error) ( ThreadId tid, Addr a ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 483 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 484 | MAC_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 485 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 486 | sk_assert(VG_INVALID_THREADID != tid); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 487 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 488 | err_extra.addrinfo.akind = Undescribed; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 489 | VG_(maybe_record_error)( tid, FreeErr, a, /*s*/NULL, &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 490 | } |
| 491 | |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 492 | void MAC_(record_illegal_mempool_error) ( ThreadId tid, Addr a ) |
| 493 | { |
| 494 | MAC_Error err_extra; |
| 495 | |
| 496 | sk_assert(VG_INVALID_THREADID != tid); |
| 497 | MAC_(clear_MAC_Error)( &err_extra ); |
| 498 | err_extra.addrinfo.akind = Undescribed; |
| 499 | VG_(maybe_record_error)( tid, IllegalMempoolErr, a, /*s*/NULL, &err_extra ); |
| 500 | } |
| 501 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 502 | void MAC_(record_freemismatch_error) ( ThreadId tid, Addr a ) |
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_Error err_extra; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 505 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 506 | sk_assert(VG_INVALID_THREADID != tid); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 507 | MAC_(clear_MAC_Error)( &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 508 | err_extra.addrinfo.akind = Undescribed; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 509 | VG_(maybe_record_error)( tid, FreeMismatchErr, a, /*s*/NULL, &err_extra ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 510 | } |
| 511 | |
njn | 66fe05a | 2003-07-22 09:12:33 +0000 | [diff] [blame] | 512 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 513 | // This one not passed a ThreadId, so it grabs it itself. |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 514 | void MAC_(record_overlap_error) ( Char* function, OverlapExtra* ov_extra ) |
njn | 66fe05a | 2003-07-22 09:12:33 +0000 | [diff] [blame] | 515 | { |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 516 | VG_(maybe_record_error)( VG_(get_current_or_recent_tid)(), |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 517 | OverlapErr, /*addr*/0, /*s*/function, ov_extra ); |
njn | 66fe05a | 2003-07-22 09:12:33 +0000 | [diff] [blame] | 518 | } |
| 519 | |
| 520 | |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 521 | /* Updates the copy with address info if necessary (but not for all errors). */ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 522 | UInt SK_(update_extra)( Error* err ) |
| 523 | { |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 524 | switch (VG_(get_error_kind)(err)) { |
| 525 | case ValueErr: |
| 526 | case CoreMemErr: |
| 527 | case AddrErr: |
| 528 | case ParamErr: |
| 529 | case UserErr: |
| 530 | case FreeErr: |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 531 | case IllegalMempoolErr: |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 532 | case FreeMismatchErr: { |
| 533 | MAC_Error* extra = (MAC_Error*)VG_(get_error_extra)(err); |
| 534 | if (extra != NULL && Undescribed == extra->addrinfo.akind) { |
| 535 | describe_addr ( VG_(get_error_address)(err), &(extra->addrinfo) ); |
| 536 | } |
| 537 | return sizeof(MAC_Error); |
| 538 | } |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 539 | /* Don't need to return the correct size -- LeakErrs are always shown with |
| 540 | VG_(unique_error)() so they're not copied anyway. */ |
njn | b6cae9f | 2003-09-04 20:50:47 +0000 | [diff] [blame] | 541 | case LeakErr: return 0; |
| 542 | case OverlapErr: return sizeof(OverlapExtra); |
| 543 | default: VG_(skin_panic)("update_extra: bad errkind"); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 544 | } |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 545 | } |
| 546 | |
| 547 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 548 | /*------------------------------------------------------------*/ |
| 549 | /*--- Suppressions ---*/ |
| 550 | /*------------------------------------------------------------*/ |
| 551 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 552 | Bool MAC_(shared_recognised_suppression) ( Char* name, Supp* su ) |
| 553 | { |
| 554 | SuppKind skind; |
| 555 | |
| 556 | if (VG_STREQ(name, "Param")) skind = ParamSupp; |
| 557 | else if (VG_STREQ(name, "CoreMem")) skind = CoreMemSupp; |
| 558 | else if (VG_STREQ(name, "Addr1")) skind = Addr1Supp; |
| 559 | else if (VG_STREQ(name, "Addr2")) skind = Addr2Supp; |
| 560 | else if (VG_STREQ(name, "Addr4")) skind = Addr4Supp; |
| 561 | else if (VG_STREQ(name, "Addr8")) skind = Addr8Supp; |
njn | c061666 | 2003-06-12 09:58:41 +0000 | [diff] [blame] | 562 | else if (VG_STREQ(name, "Addr16")) skind = Addr16Supp; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 563 | else if (VG_STREQ(name, "Free")) skind = FreeSupp; |
| 564 | else if (VG_STREQ(name, "Leak")) skind = LeakSupp; |
njn | e9cab14 | 2003-09-19 08:10:07 +0000 | [diff] [blame] | 565 | else if (VG_STREQ(name, "Overlap")) skind = OverlapSupp; |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 566 | else if (VG_STREQ(name, "Mempool")) skind = MempoolSupp; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 567 | else |
| 568 | return False; |
| 569 | |
| 570 | VG_(set_supp_kind)(su, skind); |
| 571 | return True; |
| 572 | } |
| 573 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 574 | Bool SK_(read_extra_suppression_info) ( Int fd, Char* buf, Int nBuf, Supp *su ) |
| 575 | { |
| 576 | Bool eof; |
| 577 | |
| 578 | if (VG_(get_supp_kind)(su) == ParamSupp) { |
| 579 | eof = VG_(get_line) ( fd, buf, nBuf ); |
| 580 | if (eof) return False; |
| 581 | VG_(set_supp_string)(su, VG_(strdup)(buf)); |
| 582 | } |
| 583 | return True; |
| 584 | } |
| 585 | |
sewardj | 99aac97 | 2002-12-26 01:53:45 +0000 | [diff] [blame] | 586 | Bool SK_(error_matches_suppression)(Error* err, Supp* su) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 587 | { |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 588 | Int su_size; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 589 | MAC_Error* err_extra = VG_(get_error_extra)(err); |
| 590 | ErrorKind ekind = VG_(get_error_kind )(err); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 591 | |
| 592 | switch (VG_(get_supp_kind)(su)) { |
| 593 | case ParamSupp: |
| 594 | return (ekind == ParamErr |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 595 | && VG_STREQ(VG_(get_error_string)(err), |
| 596 | VG_(get_supp_string)(su))); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 597 | |
| 598 | case CoreMemSupp: |
| 599 | return (ekind == CoreMemErr |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 600 | && VG_STREQ(VG_(get_error_string)(err), |
| 601 | VG_(get_supp_string)(su))); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 602 | |
| 603 | case Value0Supp: su_size = 0; goto value_case; |
| 604 | case Value1Supp: su_size = 1; goto value_case; |
| 605 | case Value2Supp: su_size = 2; goto value_case; |
| 606 | case Value4Supp: su_size = 4; goto value_case; |
| 607 | case Value8Supp: su_size = 8; goto value_case; |
njn | c061666 | 2003-06-12 09:58:41 +0000 | [diff] [blame] | 608 | case Value16Supp:su_size =16; goto value_case; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 609 | value_case: |
| 610 | return (ekind == ValueErr && err_extra->size == su_size); |
| 611 | |
| 612 | case Addr1Supp: su_size = 1; goto addr_case; |
| 613 | case Addr2Supp: su_size = 2; goto addr_case; |
| 614 | case Addr4Supp: su_size = 4; goto addr_case; |
| 615 | case Addr8Supp: su_size = 8; goto addr_case; |
njn | c061666 | 2003-06-12 09:58:41 +0000 | [diff] [blame] | 616 | case Addr16Supp:su_size =16; goto addr_case; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 617 | addr_case: |
| 618 | return (ekind == AddrErr && err_extra->size == su_size); |
| 619 | |
| 620 | case FreeSupp: |
| 621 | return (ekind == FreeErr || ekind == FreeMismatchErr); |
| 622 | |
njn | 34419c1 | 2003-05-02 17:24:29 +0000 | [diff] [blame] | 623 | case OverlapSupp: |
| 624 | return (ekind = OverlapErr); |
| 625 | |
sewardj | 4a19e2f | 2002-12-26 11:50:21 +0000 | [diff] [blame] | 626 | case LeakSupp: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 627 | return (ekind == LeakErr); |
sewardj | 4a19e2f | 2002-12-26 11:50:21 +0000 | [diff] [blame] | 628 | |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 629 | case MempoolSupp: |
| 630 | return (ekind == IllegalMempoolErr); |
| 631 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 632 | default: |
| 633 | VG_(printf)("Error:\n" |
| 634 | " unknown suppression type %d\n", |
| 635 | VG_(get_supp_kind)(su)); |
| 636 | VG_(skin_panic)("unknown suppression type in " |
| 637 | "SK_(error_matches_suppression)"); |
| 638 | } |
| 639 | } |
| 640 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 641 | Char* SK_(get_error_name) ( Error* err ) |
| 642 | { |
| 643 | Char* s; |
| 644 | switch (VG_(get_error_kind)(err)) { |
| 645 | case ParamErr: return "Param"; |
| 646 | case UserErr: return NULL; /* Can't suppress User errors */ |
| 647 | case FreeMismatchErr: return "Free"; |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 648 | case IllegalMempoolErr: return "Mempool"; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 649 | case FreeErr: return "Free"; |
| 650 | case AddrErr: |
| 651 | switch ( ((MAC_Error*)VG_(get_error_extra)(err))->size ) { |
| 652 | case 1: return "Addr1"; |
| 653 | case 2: return "Addr2"; |
| 654 | case 4: return "Addr4"; |
| 655 | case 8: return "Addr8"; |
njn | c061666 | 2003-06-12 09:58:41 +0000 | [diff] [blame] | 656 | case 16: return "Addr16"; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 657 | default: VG_(skin_panic)("unexpected size for Addr"); |
| 658 | } |
| 659 | |
| 660 | case ValueErr: |
| 661 | switch ( ((MAC_Error*)VG_(get_error_extra)(err))->size ) { |
| 662 | case 0: return "Cond"; |
| 663 | case 1: return "Value1"; |
| 664 | case 2: return "Value2"; |
| 665 | case 4: return "Value4"; |
| 666 | case 8: return "Value8"; |
njn | c061666 | 2003-06-12 09:58:41 +0000 | [diff] [blame] | 667 | case 16: return "Value16"; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 668 | default: VG_(skin_panic)("unexpected size for Value"); |
| 669 | } |
| 670 | case CoreMemErr: return "CoreMem"; |
njn | 34419c1 | 2003-05-02 17:24:29 +0000 | [diff] [blame] | 671 | case OverlapErr: return "Overlap"; |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 672 | case LeakErr: return "Leak"; |
| 673 | default: VG_(skin_panic)("get_error_name: unexpected type"); |
| 674 | } |
| 675 | VG_(printf)(s); |
| 676 | } |
| 677 | |
| 678 | void SK_(print_extra_suppression_info) ( Error* err ) |
| 679 | { |
| 680 | if (ParamErr == VG_(get_error_kind)(err)) { |
| 681 | VG_(printf)(" %s\n", VG_(get_error_string)(err)); |
| 682 | } |
| 683 | } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 684 | |
| 685 | /*------------------------------------------------------------*/ |
| 686 | /*--- Crude profiling machinery. ---*/ |
| 687 | /*------------------------------------------------------------*/ |
| 688 | |
| 689 | /* Event index. If just the name of the fn is given, this means the |
| 690 | number of calls to the fn. Otherwise it is the specified event. |
| 691 | Ones marked 'M' are MemCheck only. Ones marked 'A' are AddrCheck only. |
| 692 | The rest are shared. |
| 693 | |
| 694 | 10 alloc_secondary_map |
| 695 | |
| 696 | 20 get_abit |
| 697 | M 21 get_vbyte |
| 698 | 22 set_abit |
| 699 | M 23 set_vbyte |
| 700 | 24 get_abits4_ALIGNED |
| 701 | M 25 get_vbytes4_ALIGNED |
| 702 | |
| 703 | 30 set_address_range_perms |
| 704 | 31 set_address_range_perms(lower byte loop) |
| 705 | 32 set_address_range_perms(quadword loop) |
| 706 | 33 set_address_range_perms(upper byte loop) |
| 707 | |
| 708 | 35 make_noaccess |
| 709 | 36 make_writable |
| 710 | 37 make_readable |
| 711 | A 38 make_accessible |
| 712 | |
| 713 | 40 copy_address_range_state |
| 714 | 41 copy_address_range_state(byte loop) |
| 715 | 42 check_writable |
| 716 | 43 check_writable(byte loop) |
| 717 | 44 check_readable |
| 718 | 45 check_readable(byte loop) |
| 719 | 46 check_readable_asciiz |
| 720 | 47 check_readable_asciiz(byte loop) |
| 721 | A 48 check_accessible |
| 722 | A 49 check_accessible(byte loop) |
| 723 | |
| 724 | 50 make_noaccess_aligned |
| 725 | 51 make_writable_aligned |
| 726 | |
| 727 | M 60 helperc_LOADV4 |
| 728 | M 61 helperc_STOREV4 |
| 729 | M 62 helperc_LOADV2 |
| 730 | M 63 helperc_STOREV2 |
| 731 | M 64 helperc_LOADV1 |
| 732 | M 65 helperc_STOREV1 |
| 733 | |
| 734 | A 66 helperc_ACCESS4 |
| 735 | A 67 helperc_ACCESS2 |
| 736 | A 68 helperc_ACCESS1 |
| 737 | |
| 738 | M 70 rim_rd_V4_SLOWLY |
| 739 | M 71 rim_wr_V4_SLOWLY |
| 740 | M 72 rim_rd_V2_SLOWLY |
| 741 | M 73 rim_wr_V2_SLOWLY |
| 742 | M 74 rim_rd_V1_SLOWLY |
| 743 | M 75 rim_wr_V1_SLOWLY |
| 744 | |
| 745 | A 76 ACCESS4_SLOWLY |
| 746 | A 77 ACCESS2_SLOWLY |
| 747 | A 78 ACCESS1_SLOWLY |
| 748 | |
| 749 | 80 fpu_read |
| 750 | 81 fpu_read aligned 4 |
| 751 | 82 fpu_read aligned 8 |
| 752 | 83 fpu_read 2 |
jseward | fca6018 | 2004-01-04 23:30:55 +0000 | [diff] [blame] | 753 | 84 fpu_read 10/28/108/512 |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 754 | |
| 755 | M 85 fpu_write |
| 756 | M 86 fpu_write aligned 4 |
| 757 | M 87 fpu_write aligned 8 |
| 758 | M 88 fpu_write 2 |
jseward | fca6018 | 2004-01-04 23:30:55 +0000 | [diff] [blame] | 759 | M 89 fpu_write 10/28/108/512 |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 760 | |
| 761 | 90 fpu_access |
| 762 | 91 fpu_access aligned 4 |
| 763 | 92 fpu_access aligned 8 |
| 764 | 93 fpu_access 2 |
jseward | fca6018 | 2004-01-04 23:30:55 +0000 | [diff] [blame] | 765 | 94 fpu_access 10/28/108/512 |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 766 | |
| 767 | 100 fpu_access_check_SLOWLY |
| 768 | 101 fpu_access_check_SLOWLY(byte loop) |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 769 | |
| 770 | 110 new_mem_stack_4 |
| 771 | 111 new_mem_stack_8 |
| 772 | 112 new_mem_stack_12 |
| 773 | 113 new_mem_stack_16 |
| 774 | 114 new_mem_stack_32 |
| 775 | 115 new_mem_stack |
| 776 | |
| 777 | 120 die_mem_stack_4 |
| 778 | 121 die_mem_stack_8 |
| 779 | 122 die_mem_stack_12 |
| 780 | 123 die_mem_stack_16 |
| 781 | 124 die_mem_stack_32 |
| 782 | 125 die_mem_stack |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 783 | */ |
| 784 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 785 | #ifdef MAC_PROFILE_MEMORY |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 786 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 787 | UInt MAC_(event_ctr)[N_PROF_EVENTS]; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 788 | |
njn | b4aee05 | 2003-04-15 14:09:58 +0000 | [diff] [blame] | 789 | static void init_prof_mem ( void ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 790 | { |
| 791 | Int i; |
| 792 | for (i = 0; i < N_PROF_EVENTS; i++) |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 793 | MAC_(event_ctr)[i] = 0; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 794 | } |
| 795 | |
njn | b4aee05 | 2003-04-15 14:09:58 +0000 | [diff] [blame] | 796 | static void done_prof_mem ( void ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 797 | { |
| 798 | Int i; |
| 799 | for (i = 0; i < N_PROF_EVENTS; i++) { |
| 800 | if ((i % 10) == 0) |
| 801 | VG_(printf)("\n"); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 802 | if (MAC_(event_ctr)[i] > 0) |
| 803 | VG_(printf)( "prof mem event %2d: %d\n", i, MAC_(event_ctr)[i] ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 804 | } |
| 805 | VG_(printf)("\n"); |
| 806 | } |
| 807 | |
| 808 | #else |
| 809 | |
njn | b4aee05 | 2003-04-15 14:09:58 +0000 | [diff] [blame] | 810 | static void init_prof_mem ( void ) { } |
| 811 | static void done_prof_mem ( void ) { } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 812 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 813 | #endif |
| 814 | |
| 815 | /*------------------------------------------------------------*/ |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 816 | /*--- Common initialisation + finalisation ---*/ |
| 817 | /*------------------------------------------------------------*/ |
| 818 | |
| 819 | void MAC_(common_pre_clo_init)(void) |
| 820 | { |
| 821 | MAC_(malloc_list) = VG_(HT_construct)(); |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 822 | MAC_(mempool_list) = VG_(HT_construct)(); |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 823 | init_prof_mem(); |
| 824 | } |
| 825 | |
| 826 | void MAC_(common_fini)(void (*leak_check)(void)) |
| 827 | { |
| 828 | MAC_(print_malloc_stats)(); |
| 829 | |
| 830 | if (VG_(clo_verbosity) == 1) { |
| 831 | if (!MAC_(clo_leak_check)) |
| 832 | VG_(message)(Vg_UserMsg, |
| 833 | "For a detailed leak analysis, rerun with: --leak-check=yes"); |
| 834 | |
| 835 | VG_(message)(Vg_UserMsg, |
| 836 | "For counts of detected errors, rerun with: -v"); |
| 837 | } |
| 838 | if (MAC_(clo_leak_check)) leak_check(); |
| 839 | |
| 840 | done_prof_mem(); |
| 841 | } |
| 842 | |
| 843 | /*------------------------------------------------------------*/ |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 844 | /*--- Common client request handling ---*/ |
| 845 | /*------------------------------------------------------------*/ |
| 846 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 847 | Bool MAC_(handle_common_client_requests)(ThreadId tid, UInt* arg, UInt* ret ) |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 848 | { |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 849 | Char* err = |
| 850 | "The client requests VALGRIND_MALLOCLIKE_BLOCK and\n" |
| 851 | " VALGRIND_FREELIKE_BLOCK have moved. Please recompile your\n" |
| 852 | " program to incorporate the updates in the Valgrind header files.\n" |
| 853 | " You shouldn't need to change the text of your program at all.\n" |
| 854 | " Everything should then work as before. Sorry for the bother.\n"; |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 855 | |
| 856 | // Not using 'tid' here because MAC_(new_block)() and MAC_(handle_free)() |
| 857 | // grab it themselves. But what they grab should match 'tid', check |
| 858 | // this. |
| 859 | sk_assert(tid == VG_(get_current_or_recent_tid)()); |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 860 | |
| 861 | switch (arg[0]) { |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 862 | case VG_USERREQ__COUNT_LEAKS: { /* count leaked bytes */ |
| 863 | UInt** argp = (UInt**)arg; |
njn | e8b5c05 | 2003-07-22 22:03:58 +0000 | [diff] [blame] | 864 | // MAC_(bytes_leaked) et al were set by the last leak check (or zero |
| 865 | // if no prior leak checks performed). |
| 866 | *argp[1] = MAC_(bytes_leaked); |
| 867 | *argp[2] = MAC_(bytes_dubious); |
| 868 | *argp[3] = MAC_(bytes_reachable); |
| 869 | *argp[4] = MAC_(bytes_suppressed); |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 870 | *ret = 0; |
| 871 | return True; |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 872 | } |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 873 | case VG_USERREQ__MALLOCLIKE_BLOCK__OLD_DO_NOT_USE: |
| 874 | case VG_USERREQ__FREELIKE_BLOCK__OLD_DO_NOT_USE: |
| 875 | VG_(skin_panic)(err); |
| 876 | |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 877 | case VG_USERREQ__MALLOCLIKE_BLOCK: { |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 878 | Addr p = (Addr)arg[1]; |
| 879 | UInt sizeB = arg[2]; |
| 880 | UInt rzB = arg[3]; |
| 881 | Bool is_zeroed = (Bool)arg[4]; |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 882 | |
nethercote | 57e36b3 | 2004-07-10 14:56:28 +0000 | [diff] [blame] | 883 | MAC_(new_block) ( p, sizeB, /*ignored*/0, rzB, is_zeroed, |
| 884 | MAC_AllocCustom, MAC_(malloc_list) ); |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 885 | return True; |
| 886 | } |
| 887 | case VG_USERREQ__FREELIKE_BLOCK: { |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 888 | Addr p = (Addr)arg[1]; |
| 889 | UInt rzB = arg[2]; |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 890 | |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 891 | MAC_(handle_free) ( p, rzB, MAC_AllocCustom ); |
njn | 1078545 | 2003-05-20 16:38:24 +0000 | [diff] [blame] | 892 | return True; |
| 893 | } |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 894 | |
nethercote | e3a5372 | 2004-05-05 10:46:22 +0000 | [diff] [blame] | 895 | case _VG_USERREQ__MEMCHECK_GET_RECORD_OVERLAP: |
| 896 | *ret = (Addr)MAC_(record_overlap_error); |
| 897 | return True; |
| 898 | |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 899 | case VG_USERREQ__CREATE_MEMPOOL: { |
| 900 | Addr pool = (Addr)arg[1]; |
| 901 | UInt rzB = arg[2]; |
| 902 | Bool is_zeroed = (Bool)arg[3]; |
| 903 | |
| 904 | MAC_(create_mempool) ( pool, rzB, is_zeroed ); |
| 905 | return True; |
| 906 | } |
| 907 | |
| 908 | case VG_USERREQ__DESTROY_MEMPOOL: { |
| 909 | Addr pool = (Addr)arg[1]; |
| 910 | |
| 911 | MAC_(destroy_mempool) ( pool ); |
| 912 | return True; |
| 913 | } |
| 914 | |
| 915 | case VG_USERREQ__MEMPOOL_ALLOC: { |
| 916 | Addr pool = (Addr)arg[1]; |
| 917 | Addr addr = (Addr)arg[2]; |
| 918 | UInt size = arg[3]; |
| 919 | |
| 920 | MAC_(mempool_alloc) ( pool, addr, size ); |
| 921 | return True; |
| 922 | } |
| 923 | |
| 924 | case VG_USERREQ__MEMPOOL_FREE: { |
| 925 | Addr pool = (Addr)arg[1]; |
| 926 | Addr addr = (Addr)arg[2]; |
| 927 | |
| 928 | MAC_(mempool_free) ( pool, addr ); |
| 929 | return True; |
| 930 | } |
| 931 | |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 932 | default: |
| 933 | return False; |
| 934 | } |
| 935 | } |
| 936 | |
| 937 | /*------------------------------------------------------------*/ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 938 | /*--- Syscall wrappers ---*/ |
| 939 | /*------------------------------------------------------------*/ |
| 940 | |
| 941 | void* SK_(pre_syscall) ( ThreadId tid, UInt syscallno, Bool isBlocking ) |
| 942 | { |
| 943 | Int sane = SK_(cheap_sanity_check)(); |
| 944 | return (void*)sane; |
| 945 | } |
| 946 | |
| 947 | void SK_(post_syscall) ( ThreadId tid, UInt syscallno, |
| 948 | void* pre_result, Int res, Bool isBlocking ) |
| 949 | { |
| 950 | Int sane_before_call = (Int)pre_result; |
| 951 | Bool sane_after_call = SK_(cheap_sanity_check)(); |
| 952 | |
| 953 | if ((Int)sane_before_call && (!sane_after_call)) { |
| 954 | VG_(message)(Vg_DebugMsg, "post-syscall: "); |
| 955 | VG_(message)(Vg_DebugMsg, |
| 956 | "probable sanity check failure for syscall number %d\n", |
| 957 | syscallno ); |
| 958 | VG_(skin_panic)("aborting due to the above ... bye!"); |
| 959 | } |
| 960 | } |
| 961 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 962 | /*--------------------------------------------------------------------*/ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 963 | /*--- end mac_needs.c ---*/ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 964 | /*--------------------------------------------------------------------*/ |