njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1 | |
| 2 | /*--------------------------------------------------------------------*/ |
nethercote | 137bc55 | 2003-11-14 17:47:54 +0000 | [diff] [blame] | 3 | /*--- The AddrCheck tool: like MemCheck, but only does address ---*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 4 | /*--- checking. No definedness checking. ---*/ |
njn25 | cac76cb | 2002-09-23 11:21:57 +0000 | [diff] [blame] | 5 | /*--- ac_main.c ---*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 6 | /*--------------------------------------------------------------------*/ |
| 7 | |
| 8 | /* |
nethercote | 137bc55 | 2003-11-14 17:47:54 +0000 | [diff] [blame] | 9 | This file is part of AddrCheck, a lightweight Valgrind tool for |
njn | c953984 | 2002-10-02 13:26:35 +0000 | [diff] [blame] | 10 | detecting memory errors. |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 11 | |
nethercote | bb1c991 | 2004-01-04 16:43:23 +0000 | [diff] [blame] | 12 | Copyright (C) 2000-2004 Julian Seward |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +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 | |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 33 | #include "mac_shared.h" |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 34 | #include "memcheck.h" |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 35 | //#include "vg_profile.c" |
| 36 | |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 37 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 38 | /*------------------------------------------------------------*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 39 | /*--- Comparing and printing errors ---*/ |
| 40 | /*------------------------------------------------------------*/ |
| 41 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 42 | void TL_(pp_Error) ( Error* err ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 43 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 44 | MAC_Error* err_extra = VG_(get_error_extra)(err); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 45 | |
njn | 810086f | 2002-11-14 12:42:47 +0000 | [diff] [blame] | 46 | switch (VG_(get_error_kind)(err)) { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 47 | case CoreMemErr: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 48 | VG_(message)(Vg_UserMsg, "%s contains unaddressable byte(s)", |
| 49 | VG_(get_error_string)(err)); |
| 50 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 51 | break; |
| 52 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 53 | case ParamErr: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 54 | VG_(message)(Vg_UserMsg, |
| 55 | "Syscall param %s contains unaddressable byte(s)", |
| 56 | VG_(get_error_string)(err) ); |
| 57 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 58 | MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 59 | break; |
| 60 | |
| 61 | case UserErr: |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 62 | VG_(message)(Vg_UserMsg, |
| 63 | "Unaddressable byte(s) found during client check request"); |
| 64 | VG_(pp_ExeContext)( VG_(get_error_where)(err) ); |
| 65 | MAC_(pp_AddrInfo)(VG_(get_error_address)(err), &err_extra->addrinfo); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 66 | break; |
| 67 | |
| 68 | default: |
njn | b126f73 | 2004-11-22 17:57:07 +0000 | [diff] [blame] | 69 | MAC_(pp_shared_Error)(err); |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 70 | break; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 71 | } |
| 72 | } |
| 73 | |
| 74 | /*------------------------------------------------------------*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 75 | /*--- Suppressions ---*/ |
| 76 | /*------------------------------------------------------------*/ |
| 77 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 78 | Bool TL_(recognised_suppression) ( Char* name, Supp* su ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 79 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 80 | return MAC_(shared_recognised_suppression)(name, su); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 81 | } |
| 82 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 83 | #define DEBUG(fmt, args...) //VG_(printf)(fmt, ## args) |
| 84 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 85 | /*------------------------------------------------------------*/ |
| 86 | /*--- Low-level support for memory checking. ---*/ |
| 87 | /*------------------------------------------------------------*/ |
| 88 | |
| 89 | /* All reads and writes are checked against a memory map, which |
| 90 | records the state of all memory in the process. The memory map is |
| 91 | organised like this: |
| 92 | |
| 93 | The top 16 bits of an address are used to index into a top-level |
| 94 | map table, containing 65536 entries. Each entry is a pointer to a |
| 95 | second-level map, which records the accesibililty and validity |
| 96 | permissions for the 65536 bytes indexed by the lower 16 bits of the |
| 97 | address. Each byte is represented by one bit, indicating |
| 98 | accessibility. So each second-level map contains 8192 bytes. This |
| 99 | two-level arrangement conveniently divides the 4G address space |
| 100 | into 64k lumps, each size 64k bytes. |
| 101 | |
| 102 | All entries in the primary (top-level) map must point to a valid |
| 103 | secondary (second-level) map. Since most of the 4G of address |
| 104 | space will not be in use -- ie, not mapped at all -- there is a |
| 105 | distinguished secondary map, which indicates `not addressible and |
| 106 | not valid' writeable for all bytes. Entries in the primary map for |
| 107 | which the entire 64k is not in use at all point at this |
| 108 | distinguished map. |
| 109 | |
| 110 | [...] lots of stuff deleted due to out of date-ness |
| 111 | |
| 112 | As a final optimisation, the alignment and address checks for |
| 113 | 4-byte loads and stores are combined in a neat way. The primary |
| 114 | map is extended to have 262144 entries (2^18), rather than 2^16. |
| 115 | The top 3/4 of these entries are permanently set to the |
| 116 | distinguished secondary map. For a 4-byte load/store, the |
| 117 | top-level map is indexed not with (addr >> 16) but instead f(addr), |
| 118 | where |
| 119 | |
| 120 | f( XXXX XXXX XXXX XXXX ____ ____ ____ __YZ ) |
| 121 | = ____ ____ ____ __YZ XXXX XXXX XXXX XXXX or |
| 122 | = ____ ____ ____ __ZY XXXX XXXX XXXX XXXX |
| 123 | |
| 124 | ie the lowest two bits are placed above the 16 high address bits. |
| 125 | If either of these two bits are nonzero, the address is misaligned; |
| 126 | this will select a secondary map from the upper 3/4 of the primary |
| 127 | map. Because this is always the distinguished secondary map, a |
| 128 | (bogus) address check failure will result. The failure handling |
| 129 | code can then figure out whether this is a genuine addr check |
| 130 | failure or whether it is a possibly-legitimate access at a |
| 131 | misaligned address. */ |
| 132 | |
| 133 | |
| 134 | /*------------------------------------------------------------*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 135 | /*--- Function declarations. ---*/ |
| 136 | /*------------------------------------------------------------*/ |
| 137 | |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 138 | static void ac_ACCESS4_SLOWLY ( Addr a, Bool isWrite ); |
| 139 | static void ac_ACCESS2_SLOWLY ( Addr a, Bool isWrite ); |
| 140 | static void ac_ACCESS1_SLOWLY ( Addr a, Bool isWrite ); |
nethercote | 928a5f7 | 2004-11-03 18:10:37 +0000 | [diff] [blame] | 141 | static void ac_fpu_ACCESS_check_SLOWLY ( Addr addr, SizeT size, Bool isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 142 | |
| 143 | /*------------------------------------------------------------*/ |
| 144 | /*--- Data defns. ---*/ |
| 145 | /*------------------------------------------------------------*/ |
| 146 | |
| 147 | typedef |
| 148 | struct { |
| 149 | UChar abits[8192]; |
| 150 | } |
| 151 | AcSecMap; |
| 152 | |
| 153 | static AcSecMap* primary_map[ /*65536*/ 262144 ]; |
| 154 | static AcSecMap distinguished_secondary_map; |
| 155 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 156 | static void init_shadow_memory ( void ) |
| 157 | { |
| 158 | Int i; |
| 159 | |
| 160 | for (i = 0; i < 8192; i++) /* Invalid address */ |
| 161 | distinguished_secondary_map.abits[i] = VGM_BYTE_INVALID; |
| 162 | |
| 163 | /* These entries gradually get overwritten as the used address |
| 164 | space expands. */ |
| 165 | for (i = 0; i < 65536; i++) |
| 166 | primary_map[i] = &distinguished_secondary_map; |
| 167 | |
| 168 | /* These ones should never change; it's a bug in Valgrind if they do. */ |
| 169 | for (i = 65536; i < 262144; i++) |
| 170 | primary_map[i] = &distinguished_secondary_map; |
| 171 | } |
| 172 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 173 | /*------------------------------------------------------------*/ |
| 174 | /*--- Basic bitmap management, reading and writing. ---*/ |
| 175 | /*------------------------------------------------------------*/ |
| 176 | |
| 177 | /* Allocate and initialise a secondary map. */ |
| 178 | |
| 179 | static AcSecMap* alloc_secondary_map ( __attribute__ ((unused)) |
| 180 | Char* caller ) |
| 181 | { |
| 182 | AcSecMap* map; |
| 183 | UInt i; |
| 184 | PROF_EVENT(10); |
| 185 | |
| 186 | /* Mark all bytes as invalid access and invalid value. */ |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 187 | map = (AcSecMap *)VG_(shadow_alloc)(sizeof(AcSecMap)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 188 | for (i = 0; i < 8192; i++) |
| 189 | map->abits[i] = VGM_BYTE_INVALID; /* Invalid address */ |
| 190 | |
| 191 | /* VG_(printf)("ALLOC_2MAP(%s)\n", caller ); */ |
| 192 | return map; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | /* Basic reading/writing of the bitmaps, for byte-sized accesses. */ |
| 197 | |
| 198 | static __inline__ UChar get_abit ( Addr a ) |
| 199 | { |
| 200 | AcSecMap* sm = primary_map[a >> 16]; |
| 201 | UInt sm_off = a & 0xFFFF; |
| 202 | PROF_EVENT(20); |
| 203 | # if 0 |
| 204 | if (IS_DISTINGUISHED_SM(sm)) |
| 205 | VG_(message)(Vg_DebugMsg, |
| 206 | "accessed distinguished 2ndary (A)map! 0x%x\n", a); |
| 207 | # endif |
| 208 | return BITARR_TEST(sm->abits, sm_off) |
| 209 | ? VGM_BIT_INVALID : VGM_BIT_VALID; |
| 210 | } |
| 211 | |
sewardj | 5686735 | 2003-10-12 10:27:06 +0000 | [diff] [blame] | 212 | static /* __inline__ */ void set_abit ( Addr a, UChar abit ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 213 | { |
| 214 | AcSecMap* sm; |
| 215 | UInt sm_off; |
| 216 | PROF_EVENT(22); |
| 217 | ENSURE_MAPPABLE(a, "set_abit"); |
| 218 | sm = primary_map[a >> 16]; |
| 219 | sm_off = a & 0xFFFF; |
| 220 | if (abit) |
| 221 | BITARR_SET(sm->abits, sm_off); |
| 222 | else |
| 223 | BITARR_CLEAR(sm->abits, sm_off); |
| 224 | } |
| 225 | |
| 226 | |
| 227 | /* Reading/writing of the bitmaps, for aligned word-sized accesses. */ |
| 228 | |
| 229 | static __inline__ UChar get_abits4_ALIGNED ( Addr a ) |
| 230 | { |
| 231 | AcSecMap* sm; |
| 232 | UInt sm_off; |
| 233 | UChar abits8; |
| 234 | PROF_EVENT(24); |
| 235 | # ifdef VG_DEBUG_MEMORY |
njn | edfa0f6 | 2004-11-30 18:08:05 +0000 | [diff] [blame^] | 236 | tl_assert(IS_4_ALIGNED(a)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 237 | # endif |
| 238 | sm = primary_map[a >> 16]; |
| 239 | sm_off = a & 0xFFFF; |
| 240 | abits8 = sm->abits[sm_off >> 3]; |
| 241 | abits8 >>= (a & 4 /* 100b */); /* a & 4 is either 0 or 4 */ |
| 242 | abits8 &= 0x0F; |
| 243 | return abits8; |
| 244 | } |
| 245 | |
| 246 | |
| 247 | |
| 248 | /*------------------------------------------------------------*/ |
| 249 | /*--- Setting permissions over address ranges. ---*/ |
| 250 | /*------------------------------------------------------------*/ |
| 251 | |
sewardj | 5686735 | 2003-10-12 10:27:06 +0000 | [diff] [blame] | 252 | static /* __inline__ */ |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 253 | void set_address_range_perms ( Addr a, SizeT len, UInt example_a_bit ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 254 | { |
| 255 | UChar abyte8; |
| 256 | UInt sm_off; |
| 257 | AcSecMap* sm; |
| 258 | |
| 259 | PROF_EVENT(30); |
| 260 | |
| 261 | if (len == 0) |
| 262 | return; |
| 263 | |
| 264 | if (len > 100 * 1000 * 1000) { |
| 265 | VG_(message)(Vg_UserMsg, |
| 266 | "Warning: set address range perms: " |
| 267 | "large range %u, a %d", |
| 268 | len, example_a_bit ); |
| 269 | } |
| 270 | |
| 271 | VGP_PUSHCC(VgpSetMem); |
| 272 | |
| 273 | /* Requests to change permissions of huge address ranges may |
| 274 | indicate bugs in our machinery. 30,000,000 is arbitrary, but so |
| 275 | far all legitimate requests have fallen beneath that size. */ |
| 276 | /* 4 Mar 02: this is just stupid; get rid of it. */ |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 277 | /* tl_assert(len < 30000000); */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 278 | |
| 279 | /* Check the permissions make sense. */ |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 280 | tl_assert(example_a_bit == VGM_BIT_VALID |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 281 | || example_a_bit == VGM_BIT_INVALID); |
| 282 | |
| 283 | /* In order that we can charge through the address space at 8 |
| 284 | bytes/main-loop iteration, make up some perms. */ |
| 285 | abyte8 = (example_a_bit << 7) |
| 286 | | (example_a_bit << 6) |
| 287 | | (example_a_bit << 5) |
| 288 | | (example_a_bit << 4) |
| 289 | | (example_a_bit << 3) |
| 290 | | (example_a_bit << 2) |
| 291 | | (example_a_bit << 1) |
| 292 | | (example_a_bit << 0); |
| 293 | |
| 294 | # ifdef VG_DEBUG_MEMORY |
| 295 | /* Do it ... */ |
| 296 | while (True) { |
| 297 | PROF_EVENT(31); |
| 298 | if (len == 0) break; |
| 299 | set_abit ( a, example_a_bit ); |
| 300 | set_vbyte ( a, vbyte ); |
| 301 | a++; |
| 302 | len--; |
| 303 | } |
| 304 | |
| 305 | # else |
| 306 | /* Slowly do parts preceding 8-byte alignment. */ |
| 307 | while (True) { |
| 308 | PROF_EVENT(31); |
| 309 | if (len == 0) break; |
| 310 | if ((a % 8) == 0) break; |
| 311 | set_abit ( a, example_a_bit ); |
| 312 | a++; |
| 313 | len--; |
| 314 | } |
| 315 | |
| 316 | if (len == 0) { |
| 317 | VGP_POPCC(VgpSetMem); |
| 318 | return; |
| 319 | } |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 320 | tl_assert((a % 8) == 0 && len > 0); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 321 | |
| 322 | /* Once aligned, go fast. */ |
| 323 | while (True) { |
| 324 | PROF_EVENT(32); |
| 325 | if (len < 8) break; |
| 326 | ENSURE_MAPPABLE(a, "set_address_range_perms(fast)"); |
| 327 | sm = primary_map[a >> 16]; |
| 328 | sm_off = a & 0xFFFF; |
| 329 | sm->abits[sm_off >> 3] = abyte8; |
| 330 | a += 8; |
| 331 | len -= 8; |
| 332 | } |
| 333 | |
| 334 | if (len == 0) { |
| 335 | VGP_POPCC(VgpSetMem); |
| 336 | return; |
| 337 | } |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 338 | tl_assert((a % 8) == 0 && len > 0 && len < 8); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 339 | |
| 340 | /* Finish the upper fragment. */ |
| 341 | while (True) { |
| 342 | PROF_EVENT(33); |
| 343 | if (len == 0) break; |
| 344 | set_abit ( a, example_a_bit ); |
| 345 | a++; |
| 346 | len--; |
| 347 | } |
| 348 | # endif |
| 349 | |
| 350 | /* Check that zero page and highest page have not been written to |
| 351 | -- this could happen with buggy syscall wrappers. Today |
| 352 | (2001-04-26) had precisely such a problem with __NR_setitimer. */ |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 353 | tl_assert(TL_(cheap_sanity_check)()); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 354 | VGP_POPCC(VgpSetMem); |
| 355 | } |
| 356 | |
| 357 | /* Set permissions for address ranges ... */ |
| 358 | |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 359 | static void ac_make_noaccess ( Addr a, SizeT len ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 360 | { |
| 361 | PROF_EVENT(35); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 362 | DEBUG("ac_make_noaccess(%p, %x)\n", a, len); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 363 | set_address_range_perms ( a, len, VGM_BIT_INVALID ); |
| 364 | } |
| 365 | |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 366 | static void ac_make_accessible ( Addr a, SizeT len ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 367 | { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 368 | PROF_EVENT(38); |
| 369 | DEBUG("ac_make_accessible(%p, %x)\n", a, len); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 370 | set_address_range_perms ( a, len, VGM_BIT_VALID ); |
| 371 | } |
| 372 | |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 373 | static __inline__ |
| 374 | void make_aligned_word_noaccess(Addr a) |
| 375 | { |
| 376 | AcSecMap* sm; |
| 377 | UInt sm_off; |
| 378 | UChar mask; |
| 379 | |
| 380 | VGP_PUSHCC(VgpESPAdj); |
| 381 | ENSURE_MAPPABLE(a, "make_aligned_word_noaccess"); |
| 382 | sm = primary_map[a >> 16]; |
| 383 | sm_off = a & 0xFFFF; |
| 384 | mask = 0x0F; |
| 385 | mask <<= (a & 4 /* 100b */); /* a & 4 is either 0 or 4 */ |
| 386 | /* mask now contains 1s where we wish to make address bits invalid (1s). */ |
| 387 | sm->abits[sm_off >> 3] |= mask; |
| 388 | VGP_POPCC(VgpESPAdj); |
| 389 | } |
| 390 | |
| 391 | static __inline__ |
| 392 | void make_aligned_word_accessible(Addr a) |
| 393 | { |
| 394 | AcSecMap* sm; |
| 395 | UInt sm_off; |
| 396 | UChar mask; |
| 397 | |
| 398 | VGP_PUSHCC(VgpESPAdj); |
| 399 | ENSURE_MAPPABLE(a, "make_aligned_word_accessible"); |
| 400 | sm = primary_map[a >> 16]; |
| 401 | sm_off = a & 0xFFFF; |
| 402 | mask = 0x0F; |
| 403 | mask <<= (a & 4 /* 100b */); /* a & 4 is either 0 or 4 */ |
| 404 | /* mask now contains 1s where we wish to make address bits |
| 405 | invalid (0s). */ |
| 406 | sm->abits[sm_off >> 3] &= ~mask; |
| 407 | VGP_POPCC(VgpESPAdj); |
| 408 | } |
| 409 | |
| 410 | /* Nb: by "aligned" here we mean 8-byte aligned */ |
| 411 | static __inline__ |
| 412 | void make_aligned_doubleword_accessible(Addr a) |
| 413 | { |
| 414 | AcSecMap* sm; |
| 415 | UInt sm_off; |
| 416 | |
| 417 | VGP_PUSHCC(VgpESPAdj); |
| 418 | ENSURE_MAPPABLE(a, "make_aligned_doubleword_accessible"); |
| 419 | sm = primary_map[a >> 16]; |
| 420 | sm_off = a & 0xFFFF; |
| 421 | sm->abits[sm_off >> 3] = VGM_BYTE_VALID; |
| 422 | VGP_POPCC(VgpESPAdj); |
| 423 | } |
| 424 | |
| 425 | static __inline__ |
| 426 | void make_aligned_doubleword_noaccess(Addr a) |
| 427 | { |
| 428 | AcSecMap* sm; |
| 429 | UInt sm_off; |
| 430 | |
| 431 | VGP_PUSHCC(VgpESPAdj); |
| 432 | ENSURE_MAPPABLE(a, "make_aligned_doubleword_noaccess"); |
| 433 | sm = primary_map[a >> 16]; |
| 434 | sm_off = a & 0xFFFF; |
| 435 | sm->abits[sm_off >> 3] = VGM_BYTE_INVALID; |
| 436 | VGP_POPCC(VgpESPAdj); |
| 437 | } |
| 438 | |
| 439 | /* The %esp update handling functions */ |
| 440 | ESP_UPDATE_HANDLERS ( make_aligned_word_accessible, |
| 441 | make_aligned_word_noaccess, |
| 442 | make_aligned_doubleword_accessible, |
| 443 | make_aligned_doubleword_noaccess, |
| 444 | ac_make_accessible, |
| 445 | ac_make_noaccess |
| 446 | ); |
| 447 | |
| 448 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 449 | /* Block-copy permissions (needed for implementing realloc()). */ |
| 450 | |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 451 | static void ac_copy_address_range_state ( Addr src, Addr dst, SizeT len ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 452 | { |
| 453 | UInt i; |
| 454 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 455 | DEBUG("ac_copy_address_range_state\n"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 456 | |
| 457 | PROF_EVENT(40); |
| 458 | for (i = 0; i < len; i++) { |
| 459 | UChar abit = get_abit ( src+i ); |
| 460 | PROF_EVENT(41); |
| 461 | set_abit ( dst+i, abit ); |
| 462 | } |
| 463 | } |
| 464 | |
| 465 | |
| 466 | /* Check permissions for address range. If inadequate permissions |
| 467 | exist, *bad_addr is set to the offending address, so the caller can |
| 468 | know what it is. */ |
| 469 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 470 | static __inline__ |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 471 | Bool ac_check_accessible ( Addr a, SizeT len, Addr* bad_addr ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 472 | { |
| 473 | UInt i; |
| 474 | UChar abit; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 475 | PROF_EVENT(48); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 476 | for (i = 0; i < len; i++) { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 477 | PROF_EVENT(49); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 478 | abit = get_abit(a); |
| 479 | if (abit == VGM_BIT_INVALID) { |
| 480 | if (bad_addr != NULL) *bad_addr = a; |
| 481 | return False; |
| 482 | } |
| 483 | a++; |
| 484 | } |
| 485 | return True; |
| 486 | } |
| 487 | |
sewardj | ecf8e10 | 2003-07-12 12:11:39 +0000 | [diff] [blame] | 488 | /* The opposite; check that an address range is inaccessible. */ |
| 489 | static |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 490 | Bool ac_check_noaccess ( Addr a, SizeT len, Addr* bad_addr ) |
sewardj | ecf8e10 | 2003-07-12 12:11:39 +0000 | [diff] [blame] | 491 | { |
| 492 | UInt i; |
| 493 | UChar abit; |
| 494 | PROF_EVENT(48); |
| 495 | for (i = 0; i < len; i++) { |
| 496 | PROF_EVENT(49); |
| 497 | abit = get_abit(a); |
| 498 | if (abit == VGM_BIT_VALID) { |
| 499 | if (bad_addr != NULL) *bad_addr = a; |
| 500 | return False; |
| 501 | } |
| 502 | a++; |
| 503 | } |
| 504 | return True; |
| 505 | } |
| 506 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 507 | /* Check a zero-terminated ascii string. Tricky -- don't want to |
| 508 | examine the actual bytes, to find the end, until we're sure it is |
| 509 | safe to do so. */ |
| 510 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 511 | static __inline__ |
| 512 | Bool ac_check_readable_asciiz ( Addr a, Addr* bad_addr ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 513 | { |
| 514 | UChar abit; |
| 515 | PROF_EVENT(46); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 516 | DEBUG("ac_check_readable_asciiz\n"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 517 | while (True) { |
| 518 | PROF_EVENT(47); |
| 519 | abit = get_abit(a); |
| 520 | if (abit != VGM_BIT_VALID) { |
| 521 | if (bad_addr != NULL) *bad_addr = a; |
| 522 | return False; |
| 523 | } |
| 524 | /* Ok, a is safe to read. */ |
| 525 | if (* ((UChar*)a) == 0) return True; |
| 526 | a++; |
| 527 | } |
| 528 | } |
| 529 | |
| 530 | |
| 531 | /*------------------------------------------------------------*/ |
| 532 | /*--- Memory event handlers ---*/ |
| 533 | /*------------------------------------------------------------*/ |
| 534 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 535 | static __inline__ |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 536 | void ac_check_is_accessible ( CorePart part, ThreadId tid, |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 537 | Char* s, Addr base, SizeT size, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 538 | { |
| 539 | Bool ok; |
| 540 | Addr bad_addr; |
| 541 | |
| 542 | VGP_PUSHCC(VgpCheckMem); |
| 543 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 544 | ok = ac_check_accessible ( base, size, &bad_addr ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 545 | if (!ok) { |
| 546 | switch (part) { |
| 547 | case Vg_CoreSysCall: |
nethercote | 8b76fe5 | 2004-11-08 19:20:09 +0000 | [diff] [blame] | 548 | MAC_(record_param_error) ( tid, bad_addr, /*isReg*/False, |
| 549 | /*isUnaddr*/True, s ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 550 | break; |
| 551 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 552 | case Vg_CoreSignal: |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 553 | tl_assert(isWrite); /* Should only happen with isWrite case */ |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 554 | /* fall through */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 555 | case Vg_CorePThread: |
nethercote | 8b76fe5 | 2004-11-08 19:20:09 +0000 | [diff] [blame] | 556 | MAC_(record_core_mem_error)( tid, /*isUnaddr*/True, s ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 557 | break; |
| 558 | |
| 559 | /* If we're being asked to jump to a silly address, record an error |
| 560 | message before potentially crashing the entire system. */ |
| 561 | case Vg_CoreTranslate: |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 562 | tl_assert(!isWrite); /* Should only happen with !isWrite case */ |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 563 | MAC_(record_jump_error)( tid, bad_addr ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 564 | break; |
| 565 | |
| 566 | default: |
njn | 6799325 | 2004-11-22 18:02:32 +0000 | [diff] [blame] | 567 | VG_(tool_panic)("ac_check_is_accessible: unexpected CorePart"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 568 | } |
| 569 | } |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 570 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 571 | VGP_POPCC(VgpCheckMem); |
| 572 | } |
| 573 | |
| 574 | static |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 575 | void ac_check_is_writable ( CorePart part, ThreadId tid, |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 576 | Char* s, Addr base, SizeT size ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 577 | { |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 578 | ac_check_is_accessible ( part, tid, s, base, size, /*isWrite*/True ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 579 | } |
| 580 | |
| 581 | static |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 582 | void ac_check_is_readable ( CorePart part, ThreadId tid, |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 583 | Char* s, Addr base, SizeT size ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 584 | { |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 585 | ac_check_is_accessible ( part, tid, s, base, size, /*isWrite*/False ); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 586 | } |
| 587 | |
| 588 | static |
njn | 7271864 | 2003-07-24 08:45:32 +0000 | [diff] [blame] | 589 | void ac_check_is_readable_asciiz ( CorePart part, ThreadId tid, |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 590 | Char* s, Addr str ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 591 | { |
| 592 | Bool ok = True; |
| 593 | Addr bad_addr; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 594 | |
| 595 | VGP_PUSHCC(VgpCheckMem); |
| 596 | |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 597 | tl_assert(part == Vg_CoreSysCall); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 598 | ok = ac_check_readable_asciiz ( (Addr)str, &bad_addr ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 599 | if (!ok) { |
nethercote | 8b76fe5 | 2004-11-08 19:20:09 +0000 | [diff] [blame] | 600 | MAC_(record_param_error) ( tid, bad_addr, /*IsReg*/False, |
| 601 | /*IsUnaddr*/True, s ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 602 | } |
| 603 | |
| 604 | VGP_POPCC(VgpCheckMem); |
| 605 | } |
| 606 | |
| 607 | static |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 608 | void ac_new_mem_startup( Addr a, SizeT len, Bool rr, Bool ww, Bool xx ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 609 | { |
njn | 1f3a909 | 2002-10-04 09:22:30 +0000 | [diff] [blame] | 610 | /* Ignore the permissions, just make it readable. Seems to work... */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 611 | DEBUG("new_mem_startup(%p, %u, rr=%u, ww=%u, xx=%u)\n", a,len,rr,ww,xx); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 612 | ac_make_accessible(a, len); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | static |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 616 | void ac_new_mem_heap ( Addr a, SizeT len, Bool is_inited ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 617 | { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 618 | ac_make_accessible(a, len); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 619 | } |
| 620 | |
| 621 | static |
nethercote | 451eae9 | 2004-11-02 13:06:32 +0000 | [diff] [blame] | 622 | void ac_set_perms (Addr a, SizeT len, Bool rr, Bool ww, Bool xx) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 623 | { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 624 | DEBUG("ac_set_perms(%p, %u, rr=%u ww=%u, xx=%u)\n", |
sewardj | 40f8ebe | 2002-10-23 21:46:13 +0000 | [diff] [blame] | 625 | a, len, rr, ww, xx); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 626 | if (rr || ww || xx) { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 627 | ac_make_accessible(a, len); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 628 | } else { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 629 | ac_make_noaccess(a, len); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 630 | } |
| 631 | } |
| 632 | |
njn | cf45fd4 | 2004-11-24 16:30:22 +0000 | [diff] [blame] | 633 | static |
| 634 | void ac_post_mem_write(CorePart part, ThreadId tid, Addr a, SizeT len) |
| 635 | { |
| 636 | ac_make_accessible(a, len); |
| 637 | } |
| 638 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 639 | |
| 640 | /*------------------------------------------------------------*/ |
| 641 | /*--- Functions called directly from generated code. ---*/ |
| 642 | /*------------------------------------------------------------*/ |
| 643 | |
| 644 | static __inline__ UInt rotateRight16 ( UInt x ) |
| 645 | { |
| 646 | /* Amazingly, gcc turns this into a single rotate insn. */ |
| 647 | return (x >> 16) | (x << 16); |
| 648 | } |
| 649 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 650 | static __inline__ UInt shiftRight16 ( UInt x ) |
| 651 | { |
| 652 | return x >> 16; |
| 653 | } |
| 654 | |
| 655 | |
| 656 | /* Read/write 1/2/4 sized V bytes, and emit an address error if |
| 657 | needed. */ |
| 658 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 659 | /* ac_helperc_ACCESS{1,2,4} handle the common case fast. |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 660 | Under all other circumstances, it defers to the relevant _SLOWLY |
| 661 | function, which can handle all situations. |
| 662 | */ |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 663 | static __inline__ void ac_helperc_ACCESS4 ( Addr a, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 664 | { |
| 665 | # ifdef VG_DEBUG_MEMORY |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 666 | return ac_ACCESS4_SLOWLY(a, isWrite); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 667 | # else |
| 668 | UInt sec_no = rotateRight16(a) & 0x3FFFF; |
njn | da2e36d | 2003-09-30 13:33:24 +0000 | [diff] [blame] | 669 | AcSecMap* sm = primary_map[sec_no]; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 670 | UInt a_off = (a & 0xFFFF) >> 3; |
| 671 | UChar abits = sm->abits[a_off]; |
| 672 | abits >>= (a & 4); |
| 673 | abits &= 15; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 674 | PROF_EVENT(66); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 675 | if (abits == VGM_NIBBLE_VALID) { |
| 676 | /* Handle common case quickly: a is suitably aligned, is mapped, |
| 677 | and is addressible. So just return. */ |
| 678 | return; |
| 679 | } else { |
| 680 | /* Slow but general case. */ |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 681 | ac_ACCESS4_SLOWLY(a, isWrite); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 682 | } |
| 683 | # endif |
| 684 | } |
| 685 | |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 686 | static __inline__ void ac_helperc_ACCESS2 ( Addr a, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 687 | { |
| 688 | # ifdef VG_DEBUG_MEMORY |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 689 | return ac_ACCESS2_SLOWLY(a, isWrite); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 690 | # else |
| 691 | UInt sec_no = rotateRight16(a) & 0x1FFFF; |
| 692 | AcSecMap* sm = primary_map[sec_no]; |
| 693 | UInt a_off = (a & 0xFFFF) >> 3; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 694 | PROF_EVENT(67); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 695 | if (sm->abits[a_off] == VGM_BYTE_VALID) { |
| 696 | /* Handle common case quickly. */ |
| 697 | return; |
| 698 | } else { |
| 699 | /* Slow but general case. */ |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 700 | ac_ACCESS2_SLOWLY(a, isWrite); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 701 | } |
| 702 | # endif |
| 703 | } |
| 704 | |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 705 | static __inline__ void ac_helperc_ACCESS1 ( Addr a, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 706 | { |
| 707 | # ifdef VG_DEBUG_MEMORY |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 708 | return ac_ACCESS1_SLOWLY(a, isWrite); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 709 | # else |
| 710 | UInt sec_no = shiftRight16(a); |
| 711 | AcSecMap* sm = primary_map[sec_no]; |
| 712 | UInt a_off = (a & 0xFFFF) >> 3; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 713 | PROF_EVENT(68); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 714 | if (sm->abits[a_off] == VGM_BYTE_VALID) { |
| 715 | /* Handle common case quickly. */ |
| 716 | return; |
| 717 | } else { |
| 718 | /* Slow but general case. */ |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 719 | ac_ACCESS1_SLOWLY(a, isWrite); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 720 | } |
| 721 | # endif |
| 722 | } |
| 723 | |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 724 | REGPARM(1) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 725 | static void ach_LOAD4 ( Addr a ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 726 | { |
| 727 | ac_helperc_ACCESS4 ( a, /*isWrite*/False ); |
| 728 | } |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 729 | REGPARM(1) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 730 | static void ach_STORE4 ( Addr a ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 731 | { |
| 732 | ac_helperc_ACCESS4 ( a, /*isWrite*/True ); |
| 733 | } |
| 734 | |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 735 | REGPARM(1) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 736 | static void ach_LOAD2 ( Addr a ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 737 | { |
| 738 | ac_helperc_ACCESS2 ( a, /*isWrite*/False ); |
| 739 | } |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 740 | REGPARM(1) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 741 | static void ach_STORE2 ( Addr a ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 742 | { |
| 743 | ac_helperc_ACCESS2 ( a, /*isWrite*/True ); |
| 744 | } |
| 745 | |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 746 | REGPARM(1) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 747 | static void ach_LOAD1 ( Addr a ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 748 | { |
| 749 | ac_helperc_ACCESS1 ( a, /*isWrite*/False ); |
| 750 | } |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 751 | REGPARM(1) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 752 | static void ach_STORE1 ( Addr a ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 753 | { |
| 754 | ac_helperc_ACCESS1 ( a, /*isWrite*/True ); |
| 755 | } |
| 756 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 757 | |
| 758 | /*------------------------------------------------------------*/ |
| 759 | /*--- Fallback functions to handle cases that the above ---*/ |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 760 | /*--- ac_helperc_ACCESS{1,2,4} can't manage. ---*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 761 | /*------------------------------------------------------------*/ |
| 762 | |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 763 | static void ac_ACCESS4_SLOWLY ( Addr a, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 764 | { |
| 765 | Bool a0ok, a1ok, a2ok, a3ok; |
| 766 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 767 | PROF_EVENT(76); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 768 | |
| 769 | /* First establish independently the addressibility of the 4 bytes |
| 770 | involved. */ |
| 771 | a0ok = get_abit(a+0) == VGM_BIT_VALID; |
| 772 | a1ok = get_abit(a+1) == VGM_BIT_VALID; |
| 773 | a2ok = get_abit(a+2) == VGM_BIT_VALID; |
| 774 | a3ok = get_abit(a+3) == VGM_BIT_VALID; |
| 775 | |
| 776 | /* Now distinguish 3 cases */ |
| 777 | |
| 778 | /* Case 1: the address is completely valid, so: |
| 779 | - no addressing error |
| 780 | */ |
| 781 | if (a0ok && a1ok && a2ok && a3ok) { |
| 782 | return; |
| 783 | } |
| 784 | |
| 785 | /* Case 2: the address is completely invalid. |
| 786 | - emit addressing error |
| 787 | */ |
| 788 | /* VG_(printf)("%p (%d %d %d %d)\n", a, a0ok, a1ok, a2ok, a3ok); */ |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 789 | if (!MAC_(clo_partial_loads_ok) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 790 | || ((a & 3) != 0) |
| 791 | || (!a0ok && !a1ok && !a2ok && !a3ok)) { |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 792 | MAC_(record_address_error)( VG_(get_current_tid)(), a, 4, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 793 | return; |
| 794 | } |
| 795 | |
| 796 | /* Case 3: the address is partially valid. |
| 797 | - no addressing error |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 798 | Case 3 is only allowed if MAC_(clo_partial_loads_ok) is True |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 799 | (which is the default), and the address is 4-aligned. |
| 800 | If not, Case 2 will have applied. |
| 801 | */ |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 802 | tl_assert(MAC_(clo_partial_loads_ok)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 803 | { |
| 804 | return; |
| 805 | } |
| 806 | } |
| 807 | |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 808 | static void ac_ACCESS2_SLOWLY ( Addr a, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 809 | { |
| 810 | /* Check the address for validity. */ |
| 811 | Bool aerr = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 812 | PROF_EVENT(77); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 813 | |
| 814 | if (get_abit(a+0) != VGM_BIT_VALID) aerr = True; |
| 815 | if (get_abit(a+1) != VGM_BIT_VALID) aerr = True; |
| 816 | |
| 817 | /* If an address error has happened, report it. */ |
| 818 | if (aerr) { |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 819 | MAC_(record_address_error)( VG_(get_current_tid)(), a, 2, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 820 | } |
| 821 | } |
| 822 | |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 823 | static void ac_ACCESS1_SLOWLY ( Addr a, Bool isWrite) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 824 | { |
| 825 | /* Check the address for validity. */ |
| 826 | Bool aerr = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 827 | PROF_EVENT(78); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 828 | |
| 829 | if (get_abit(a+0) != VGM_BIT_VALID) aerr = True; |
| 830 | |
| 831 | /* If an address error has happened, report it. */ |
| 832 | if (aerr) { |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 833 | MAC_(record_address_error)( VG_(get_current_tid)(), a, 1, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 834 | } |
| 835 | } |
| 836 | |
| 837 | |
| 838 | /* --------------------------------------------------------------------- |
| 839 | FPU load and store checks, called from generated code. |
| 840 | ------------------------------------------------------------------ */ |
| 841 | |
sewardj | 5686735 | 2003-10-12 10:27:06 +0000 | [diff] [blame] | 842 | static |
nethercote | 928a5f7 | 2004-11-03 18:10:37 +0000 | [diff] [blame] | 843 | void ac_fpu_ACCESS_check ( Addr addr, SizeT size, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 844 | { |
| 845 | /* Ensure the read area is both addressible and valid (ie, |
| 846 | readable). If there's an address error, don't report a value |
| 847 | error too; but if there isn't an address error, check for a |
| 848 | value error. |
| 849 | |
| 850 | Try to be reasonably fast on the common case; wimp out and defer |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 851 | to ac_fpu_ACCESS_check_SLOWLY for everything else. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 852 | |
| 853 | AcSecMap* sm; |
| 854 | UInt sm_off, a_off; |
| 855 | Addr addr4; |
| 856 | |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 857 | PROF_EVENT(90); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 858 | |
| 859 | # ifdef VG_DEBUG_MEMORY |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 860 | ac_fpu_ACCESS_check_SLOWLY ( addr, size, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 861 | # else |
| 862 | |
| 863 | if (size == 4) { |
njn | edfa0f6 | 2004-11-30 18:08:05 +0000 | [diff] [blame^] | 864 | if (!IS_4_ALIGNED(addr)) goto slow4; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 865 | PROF_EVENT(91); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 866 | /* Properly aligned. */ |
| 867 | sm = primary_map[addr >> 16]; |
| 868 | sm_off = addr & 0xFFFF; |
| 869 | a_off = sm_off >> 3; |
| 870 | if (sm->abits[a_off] != VGM_BYTE_VALID) goto slow4; |
| 871 | /* Properly aligned and addressible. */ |
| 872 | return; |
| 873 | slow4: |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 874 | ac_fpu_ACCESS_check_SLOWLY ( addr, 4, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 875 | return; |
| 876 | } |
| 877 | |
| 878 | if (size == 8) { |
njn | edfa0f6 | 2004-11-30 18:08:05 +0000 | [diff] [blame^] | 879 | if (!IS_4_ALIGNED(addr)) goto slow8; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 880 | PROF_EVENT(92); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 881 | /* Properly aligned. Do it in two halves. */ |
| 882 | addr4 = addr + 4; |
| 883 | /* First half. */ |
| 884 | sm = primary_map[addr >> 16]; |
| 885 | sm_off = addr & 0xFFFF; |
| 886 | a_off = sm_off >> 3; |
| 887 | if (sm->abits[a_off] != VGM_BYTE_VALID) goto slow8; |
| 888 | /* First half properly aligned and addressible. */ |
| 889 | /* Second half. */ |
| 890 | sm = primary_map[addr4 >> 16]; |
| 891 | sm_off = addr4 & 0xFFFF; |
| 892 | a_off = sm_off >> 3; |
| 893 | if (sm->abits[a_off] != VGM_BYTE_VALID) goto slow8; |
| 894 | /* Second half properly aligned and addressible. */ |
| 895 | /* Both halves properly aligned and addressible. */ |
| 896 | return; |
| 897 | slow8: |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 898 | ac_fpu_ACCESS_check_SLOWLY ( addr, 8, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 899 | return; |
| 900 | } |
| 901 | |
| 902 | /* Can't be bothered to huff'n'puff to make these (allegedly) rare |
| 903 | cases go quickly. */ |
| 904 | if (size == 2) { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 905 | PROF_EVENT(93); |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 906 | ac_fpu_ACCESS_check_SLOWLY ( addr, 2, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 907 | return; |
| 908 | } |
| 909 | |
jseward | fca6018 | 2004-01-04 23:30:55 +0000 | [diff] [blame] | 910 | if (size == 16 || size == 10 || size == 28 || size == 108 || size == 512) { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 911 | PROF_EVENT(94); |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 912 | ac_fpu_ACCESS_check_SLOWLY ( addr, size, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 913 | return; |
| 914 | } |
| 915 | |
| 916 | VG_(printf)("size is %d\n", size); |
njn | 6799325 | 2004-11-22 18:02:32 +0000 | [diff] [blame] | 917 | VG_(tool_panic)("fpu_ACCESS_check: unhandled size"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 918 | # endif |
| 919 | } |
| 920 | |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 921 | REGPARM(2) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 922 | static void ach_LOADN ( Addr addr, SizeT size ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 923 | { |
| 924 | ac_fpu_ACCESS_check ( addr, size, /*isWrite*/False ); |
| 925 | } |
| 926 | |
nethercote | eec4630 | 2004-08-23 15:06:23 +0000 | [diff] [blame] | 927 | REGPARM(2) |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 928 | static void ach_STOREN ( Addr addr, SizeT size ) |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 929 | { |
| 930 | ac_fpu_ACCESS_check ( addr, size, /*isWrite*/True ); |
| 931 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 932 | |
| 933 | /* --------------------------------------------------------------------- |
| 934 | Slow, general cases for FPU access checks. |
| 935 | ------------------------------------------------------------------ */ |
| 936 | |
nethercote | 928a5f7 | 2004-11-03 18:10:37 +0000 | [diff] [blame] | 937 | void ac_fpu_ACCESS_check_SLOWLY ( Addr addr, SizeT size, Bool isWrite ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 938 | { |
| 939 | Int i; |
| 940 | Bool aerr = False; |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 941 | PROF_EVENT(100); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 942 | for (i = 0; i < size; i++) { |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 943 | PROF_EVENT(101); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 944 | if (get_abit(addr+i) != VGM_BIT_VALID) |
| 945 | aerr = True; |
| 946 | } |
| 947 | |
| 948 | if (aerr) { |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 949 | MAC_(record_address_error)( VG_(get_current_tid)(), addr, size, isWrite ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 950 | } |
| 951 | } |
| 952 | |
| 953 | |
| 954 | /*------------------------------------------------------------*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 955 | /*--- Our instrumenter ---*/ |
| 956 | /*------------------------------------------------------------*/ |
| 957 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 958 | IRBB* TL_(instrument)(IRBB* bb_in, VexGuestLayout* layout, IRType hWordTy ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 959 | { |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 960 | Int i, hsz; |
| 961 | IRStmt* st; |
| 962 | IRExpr* data; |
| 963 | IRExpr* aexpr; |
| 964 | IRExpr* guard; |
| 965 | IRDirty* di; |
| 966 | Bool isLoad; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 967 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 968 | /* Set up BB */ |
| 969 | IRBB* bb = emptyIRBB(); |
| 970 | bb->tyenv = dopyIRTypeEnv(bb_in->tyenv); |
| 971 | bb->next = dopyIRExpr(bb_in->next); |
| 972 | bb->jumpkind = bb_in->jumpkind; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 973 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 974 | /* No loads to consider in ->next. */ |
| 975 | tl_assert(isAtom(bb_in->next)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 976 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 977 | for (i = 0; i < bb_in->stmts_used; i++) { |
| 978 | st = bb_in->stmts[i]; |
| 979 | if (!st) continue; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 980 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 981 | /* Examine each stmt in turn to figure out if it needs to be |
| 982 | preceded by a memory access check. If so, collect up the |
| 983 | relevant pieces of information. */ |
| 984 | hsz = 0; |
| 985 | aexpr = NULL; |
| 986 | guard = NULL; |
| 987 | isLoad = True; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 988 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 989 | switch (st->tag) { |
| 990 | |
| 991 | case Ist_Tmp: |
| 992 | data = st->Ist.Tmp.data; |
| 993 | if (data->tag == Iex_LDle) { |
| 994 | aexpr = data->Iex.LDle.addr; |
| 995 | hsz = sizeofIRType(data->Iex.LDle.ty); |
| 996 | isLoad = True; |
| 997 | } |
| 998 | break; |
| 999 | |
| 1000 | case Ist_STle: |
| 1001 | data = st->Ist.STle.data; |
| 1002 | aexpr = st->Ist.STle.addr; |
| 1003 | tl_assert(isAtom(data)); |
| 1004 | tl_assert(isAtom(aexpr)); |
| 1005 | hsz = sizeofIRType(typeOfIRExpr(bb_in->tyenv, data)); |
| 1006 | isLoad = False; |
| 1007 | |
| 1008 | case Ist_Put: |
| 1009 | tl_assert(isAtom(st->Ist.Put.data)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1010 | break; |
| 1011 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 1012 | case Ist_PutI: |
| 1013 | tl_assert(isAtom(st->Ist.PutI.ix)); |
| 1014 | tl_assert(isAtom(st->Ist.PutI.data)); |
njn | c2699f6 | 2003-09-05 23:29:33 +0000 | [diff] [blame] | 1015 | break; |
| 1016 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 1017 | case Ist_Exit: |
| 1018 | tl_assert(isAtom(st->Ist.Exit.guard)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1019 | break; |
| 1020 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 1021 | case Ist_Dirty: |
| 1022 | if (st->Ist.Dirty.details->mFx != Ifx_None) { |
| 1023 | /* We classify Ifx_Modify as a load. */ |
| 1024 | isLoad = st->Ist.Dirty.details->mFx != Ifx_Write; |
| 1025 | hsz = st->Ist.Dirty.details->mSize; |
| 1026 | aexpr = st->Ist.Dirty.details->mAddr; |
| 1027 | guard = st->Ist.Dirty.details->guard; |
| 1028 | tl_assert(isAtom(aexpr)); |
| 1029 | } |
| 1030 | break; |
sewardj | e3891fa | 2003-06-15 03:13:48 +0000 | [diff] [blame] | 1031 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1032 | default: |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 1033 | VG_(printf)("\n"); |
| 1034 | ppIRStmt(st); |
| 1035 | VG_(printf)("\n"); |
| 1036 | VG_(tool_panic)("addrcheck: unhandled IRStmt"); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1037 | } |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 1038 | |
| 1039 | /* If needed, add a helper call. */ |
| 1040 | if (aexpr) { |
| 1041 | tl_assert(hsz > 0); |
| 1042 | switch (hsz) { |
| 1043 | case 4: |
| 1044 | if (isLoad) |
| 1045 | di = unsafeIRDirty_0_N( 1, "ach_LOAD4", &ach_LOAD4, |
| 1046 | mkIRExprVec_1(aexpr)); |
| 1047 | else |
| 1048 | di = unsafeIRDirty_0_N( 1, "ach_STORE4", &ach_STORE4, |
| 1049 | mkIRExprVec_1(aexpr)); |
| 1050 | break; |
| 1051 | case 2: |
| 1052 | if (isLoad) |
| 1053 | di = unsafeIRDirty_0_N( 1, "ach_LOAD2", &ach_LOAD2, |
| 1054 | mkIRExprVec_1(aexpr)); |
| 1055 | else |
| 1056 | di = unsafeIRDirty_0_N( 1, "ach_STORE2", &ach_STORE2, |
| 1057 | mkIRExprVec_1(aexpr)); |
| 1058 | break; |
| 1059 | case 1: |
| 1060 | if (isLoad) |
| 1061 | di = unsafeIRDirty_0_N( 1, "ach_LOAD1", &ach_LOAD1, |
| 1062 | mkIRExprVec_1(aexpr)); |
| 1063 | else |
| 1064 | di = unsafeIRDirty_0_N( 1, "ach_STORE1", &ach_STORE1, |
| 1065 | mkIRExprVec_1(aexpr)); |
| 1066 | break; |
| 1067 | default: |
| 1068 | if (isLoad) |
| 1069 | di = unsafeIRDirty_0_N( |
| 1070 | 2, "ach_LOADN", &ach_LOADN, |
| 1071 | mkIRExprVec_2(aexpr,mkIRExpr_HWord(hsz))); |
| 1072 | else |
| 1073 | di = unsafeIRDirty_0_N( |
| 1074 | 2, "ach_STOREN", &ach_STOREN, |
| 1075 | mkIRExprVec_2(aexpr,mkIRExpr_HWord(hsz))); |
| 1076 | break; |
| 1077 | } |
| 1078 | |
| 1079 | /* If the call has arisen as a result of a dirty helper which |
| 1080 | references memory, we need to inherit the guard from the |
| 1081 | dirty helper. */ |
| 1082 | if (guard) |
| 1083 | di->guard = dopyIRExpr(guard); |
| 1084 | |
| 1085 | /* emit the helper call */ |
| 1086 | addStmtToIRBB( bb, IRStmt_Dirty(di) ); |
| 1087 | |
| 1088 | } |
| 1089 | |
| 1090 | /* And finally, copy the expr itself to the output. */ |
| 1091 | addStmtToIRBB( bb, dopyIRStmt(st)); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1092 | } |
| 1093 | |
sewardj | 9f649aa | 2004-11-22 20:38:40 +0000 | [diff] [blame] | 1094 | return bb; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1095 | } |
| 1096 | |
| 1097 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1098 | /*------------------------------------------------------------*/ |
| 1099 | /*--- Detecting leaked (unreachable) malloc'd blocks. ---*/ |
| 1100 | /*------------------------------------------------------------*/ |
| 1101 | |
sewardj | a449568 | 2002-10-21 07:29:59 +0000 | [diff] [blame] | 1102 | /* For the memory leak detector, say whether an entire 64k chunk of |
| 1103 | address space is possibly in use, or not. If in doubt return |
| 1104 | True. |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1105 | */ |
sewardj | a449568 | 2002-10-21 07:29:59 +0000 | [diff] [blame] | 1106 | static |
| 1107 | Bool ac_is_valid_64k_chunk ( UInt chunk_number ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1108 | { |
njn | ca82cc0 | 2004-11-22 17:18:48 +0000 | [diff] [blame] | 1109 | tl_assert(chunk_number >= 0 && chunk_number < 65536); |
sewardj | a449568 | 2002-10-21 07:29:59 +0000 | [diff] [blame] | 1110 | if (IS_DISTINGUISHED_SM(primary_map[chunk_number])) { |
| 1111 | /* Definitely not in use. */ |
| 1112 | return False; |
| 1113 | } else { |
| 1114 | return True; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1115 | } |
| 1116 | } |
| 1117 | |
| 1118 | |
sewardj | a449568 | 2002-10-21 07:29:59 +0000 | [diff] [blame] | 1119 | /* For the memory leak detector, say whether or not a given word |
| 1120 | address is to be regarded as valid. */ |
| 1121 | static |
| 1122 | Bool ac_is_valid_address ( Addr a ) |
| 1123 | { |
| 1124 | UChar abits; |
njn | edfa0f6 | 2004-11-30 18:08:05 +0000 | [diff] [blame^] | 1125 | tl_assert(IS_4_ALIGNED(a)); |
sewardj | a449568 | 2002-10-21 07:29:59 +0000 | [diff] [blame] | 1126 | abits = get_abits4_ALIGNED(a); |
| 1127 | if (abits == VGM_NIBBLE_VALID) { |
| 1128 | return True; |
| 1129 | } else { |
| 1130 | return False; |
| 1131 | } |
| 1132 | } |
| 1133 | |
| 1134 | |
nethercote | 996901a | 2004-08-03 13:29:09 +0000 | [diff] [blame] | 1135 | /* Leak detector for this tool. We don't actually do anything, merely |
sewardj | a449568 | 2002-10-21 07:29:59 +0000 | [diff] [blame] | 1136 | run the generic leak detector with suitable parameters for this |
nethercote | 996901a | 2004-08-03 13:29:09 +0000 | [diff] [blame] | 1137 | tool. */ |
sewardj | 2a99cf6 | 2004-11-24 10:44:19 +0000 | [diff] [blame] | 1138 | static void ac_detect_memory_leaks ( ThreadId tid ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1139 | { |
sewardj | 2a99cf6 | 2004-11-24 10:44:19 +0000 | [diff] [blame] | 1140 | MAC_(do_detect_memory_leaks) ( |
| 1141 | tid, ac_is_valid_64k_chunk, ac_is_valid_address ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1142 | } |
| 1143 | |
| 1144 | |
| 1145 | /* --------------------------------------------------------------------- |
| 1146 | Sanity check machinery (permanently engaged). |
| 1147 | ------------------------------------------------------------------ */ |
| 1148 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1149 | Bool TL_(cheap_sanity_check) ( void ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1150 | { |
jseward | 9800fd3 | 2004-01-04 23:08:04 +0000 | [diff] [blame] | 1151 | /* nothing useful we can rapidly check */ |
| 1152 | return True; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1153 | } |
| 1154 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1155 | Bool TL_(expensive_sanity_check) ( void ) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1156 | { |
| 1157 | Int i; |
| 1158 | |
| 1159 | /* Make sure nobody changed the distinguished secondary. */ |
| 1160 | for (i = 0; i < 8192; i++) |
| 1161 | if (distinguished_secondary_map.abits[i] != VGM_BYTE_INVALID) |
| 1162 | return False; |
| 1163 | |
| 1164 | /* Make sure that the upper 3/4 of the primary map hasn't |
| 1165 | been messed with. */ |
| 1166 | for (i = 65536; i < 262144; i++) |
| 1167 | if (primary_map[i] != & distinguished_secondary_map) |
| 1168 | return False; |
| 1169 | |
| 1170 | return True; |
| 1171 | } |
| 1172 | |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 1173 | /*------------------------------------------------------------*/ |
| 1174 | /*--- Client requests ---*/ |
| 1175 | /*------------------------------------------------------------*/ |
| 1176 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1177 | Bool TL_(handle_client_request) ( ThreadId tid, UWord* arg, UWord *ret ) |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1178 | { |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1179 | #define IGNORE(what) \ |
| 1180 | do { \ |
| 1181 | if (moans-- > 0) { \ |
| 1182 | VG_(message)(Vg_UserMsg, \ |
| 1183 | "Warning: Addrcheck: ignoring `%s' request.", what); \ |
| 1184 | VG_(message)(Vg_UserMsg, \ |
nethercote | 137bc55 | 2003-11-14 17:47:54 +0000 | [diff] [blame] | 1185 | " To honour this request, rerun with --tool=memcheck."); \ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1186 | } \ |
| 1187 | } while (0) |
| 1188 | |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1189 | static Int moans = 3; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1190 | |
| 1191 | /* Overload memcheck client reqs */ |
njn | fc26ff9 | 2004-11-22 19:12:49 +0000 | [diff] [blame] | 1192 | if (!VG_IS_TOOL_USERREQ('M','C',arg[0]) |
njn | d799418 | 2003-10-02 13:44:04 +0000 | [diff] [blame] | 1193 | && VG_USERREQ__MALLOCLIKE_BLOCK != arg[0] |
rjwalsh | bc0bb83 | 2004-06-19 18:12:36 +0000 | [diff] [blame] | 1194 | && VG_USERREQ__FREELIKE_BLOCK != arg[0] |
| 1195 | && VG_USERREQ__CREATE_MEMPOOL != arg[0] |
| 1196 | && VG_USERREQ__DESTROY_MEMPOOL != arg[0] |
| 1197 | && VG_USERREQ__MEMPOOL_ALLOC != arg[0] |
| 1198 | && VG_USERREQ__MEMPOOL_FREE != arg[0]) |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1199 | return False; |
| 1200 | |
| 1201 | switch (arg[0]) { |
| 1202 | case VG_USERREQ__DO_LEAK_CHECK: |
sewardj | 2a99cf6 | 2004-11-24 10:44:19 +0000 | [diff] [blame] | 1203 | ac_detect_memory_leaks(tid); |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1204 | *ret = 0; /* return value is meaningless */ |
| 1205 | break; |
| 1206 | |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1207 | /* Ignore these */ |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1208 | case VG_USERREQ__CHECK_WRITABLE: /* check writable */ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1209 | IGNORE("VALGRIND_CHECK_WRITABLE"); |
| 1210 | return False; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1211 | case VG_USERREQ__CHECK_READABLE: /* check readable */ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1212 | IGNORE("VALGRIND_CHECK_READABLE"); |
| 1213 | return False; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1214 | case VG_USERREQ__MAKE_NOACCESS: /* make no access */ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1215 | IGNORE("VALGRIND_MAKE_NOACCESS"); |
| 1216 | return False; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1217 | case VG_USERREQ__MAKE_WRITABLE: /* make writable */ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1218 | IGNORE("VALGRIND_MAKE_WRITABLE"); |
| 1219 | return False; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1220 | case VG_USERREQ__MAKE_READABLE: /* make readable */ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1221 | IGNORE("VALGRIND_MAKE_READABLE"); |
| 1222 | return False; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1223 | case VG_USERREQ__DISCARD: /* discard */ |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1224 | IGNORE("VALGRIND_CHECK_DISCARD"); |
| 1225 | return False; |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1226 | |
| 1227 | default: |
nethercote | d1b64b2 | 2004-11-04 18:22:28 +0000 | [diff] [blame] | 1228 | if (MAC_(handle_common_client_requests)(tid, arg, ret )) { |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 1229 | return True; |
| 1230 | } else { |
| 1231 | VG_(message)(Vg_UserMsg, |
nethercote | d1b64b2 | 2004-11-04 18:22:28 +0000 | [diff] [blame] | 1232 | "Warning: unknown addrcheck client request code %llx", |
| 1233 | (ULong)arg[0]); |
njn | 47363ab | 2003-04-21 13:24:40 +0000 | [diff] [blame] | 1234 | return False; |
| 1235 | } |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1236 | } |
| 1237 | return True; |
sewardj | bf310d9 | 2002-12-28 13:09:57 +0000 | [diff] [blame] | 1238 | |
| 1239 | #undef IGNORE |
sewardj | d8033d9 | 2002-12-08 22:16:58 +0000 | [diff] [blame] | 1240 | } |
| 1241 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1242 | /*------------------------------------------------------------*/ |
| 1243 | /*--- Setup ---*/ |
| 1244 | /*------------------------------------------------------------*/ |
| 1245 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1246 | Bool TL_(process_cmd_line_option)(Char* arg) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1247 | { |
njn | 43c799e | 2003-04-08 00:08:52 +0000 | [diff] [blame] | 1248 | return MAC_(process_common_cmd_line_option)(arg); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1249 | } |
| 1250 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1251 | void TL_(print_usage)(void) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1252 | { |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1253 | MAC_(print_common_usage)(); |
| 1254 | } |
| 1255 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1256 | void TL_(print_debug_usage)(void) |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1257 | { |
| 1258 | MAC_(print_common_debug_usage)(); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1259 | } |
| 1260 | |
| 1261 | |
| 1262 | /*------------------------------------------------------------*/ |
| 1263 | /*--- Setup ---*/ |
| 1264 | /*------------------------------------------------------------*/ |
| 1265 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1266 | void TL_(pre_clo_init)(void) |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1267 | { |
njn | 810086f | 2002-11-14 12:42:47 +0000 | [diff] [blame] | 1268 | VG_(details_name) ("Addrcheck"); |
| 1269 | VG_(details_version) (NULL); |
| 1270 | VG_(details_description) ("a fine-grained address checker"); |
| 1271 | VG_(details_copyright_author)( |
nethercote | 08fa9a7 | 2004-07-16 17:44:00 +0000 | [diff] [blame] | 1272 | "Copyright (C) 2002-2004, and GNU GPL'd, by Julian Seward et al."); |
nethercote | 421281e | 2003-11-20 16:20:55 +0000 | [diff] [blame] | 1273 | VG_(details_bug_reports_to) (VG_BUGS_TO); |
sewardj | 78210aa | 2002-12-01 02:55:46 +0000 | [diff] [blame] | 1274 | VG_(details_avg_translation_sizeB) ( 135 ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1275 | |
njn | 810086f | 2002-11-14 12:42:47 +0000 | [diff] [blame] | 1276 | VG_(needs_core_errors) (); |
njn | 95ec870 | 2004-11-22 16:46:13 +0000 | [diff] [blame] | 1277 | VG_(needs_tool_errors) (); |
njn | 810086f | 2002-11-14 12:42:47 +0000 | [diff] [blame] | 1278 | VG_(needs_libc_freeres) (); |
njn | 810086f | 2002-11-14 12:42:47 +0000 | [diff] [blame] | 1279 | VG_(needs_command_line_options)(); |
| 1280 | VG_(needs_client_requests) (); |
njn | 810086f | 2002-11-14 12:42:47 +0000 | [diff] [blame] | 1281 | VG_(needs_sanity_checks) (); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1282 | VG_(needs_shadow_memory) (); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1283 | |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1284 | MAC_( new_mem_heap) = & ac_new_mem_heap; |
| 1285 | MAC_( ban_mem_heap) = & ac_make_noaccess; |
| 1286 | MAC_(copy_mem_heap) = & ac_copy_address_range_state; |
| 1287 | MAC_( die_mem_heap) = & ac_make_noaccess; |
sewardj | ecf8e10 | 2003-07-12 12:11:39 +0000 | [diff] [blame] | 1288 | MAC_(check_noaccess) = & ac_check_noaccess; |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1289 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1290 | VG_(init_new_mem_startup) ( & ac_new_mem_startup ); |
| 1291 | VG_(init_new_mem_stack_signal) ( & ac_make_accessible ); |
| 1292 | VG_(init_new_mem_brk) ( & ac_make_accessible ); |
| 1293 | VG_(init_new_mem_mmap) ( & ac_set_perms ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1294 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1295 | VG_(init_copy_mem_remap) ( & ac_copy_address_range_state ); |
| 1296 | VG_(init_change_mem_mprotect) ( & ac_set_perms ); |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1297 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1298 | VG_(init_die_mem_stack_signal) ( & ac_make_noaccess ); |
| 1299 | VG_(init_die_mem_brk) ( & ac_make_noaccess ); |
| 1300 | VG_(init_die_mem_munmap) ( & ac_make_noaccess ); |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1301 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1302 | VG_(init_new_mem_stack_4) ( & MAC_(new_mem_stack_4) ); |
| 1303 | VG_(init_new_mem_stack_8) ( & MAC_(new_mem_stack_8) ); |
| 1304 | VG_(init_new_mem_stack_12) ( & MAC_(new_mem_stack_12) ); |
| 1305 | VG_(init_new_mem_stack_16) ( & MAC_(new_mem_stack_16) ); |
| 1306 | VG_(init_new_mem_stack_32) ( & MAC_(new_mem_stack_32) ); |
| 1307 | VG_(init_new_mem_stack) ( & MAC_(new_mem_stack) ); |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 1308 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1309 | VG_(init_die_mem_stack_4) ( & MAC_(die_mem_stack_4) ); |
| 1310 | VG_(init_die_mem_stack_8) ( & MAC_(die_mem_stack_8) ); |
| 1311 | VG_(init_die_mem_stack_12) ( & MAC_(die_mem_stack_12) ); |
| 1312 | VG_(init_die_mem_stack_16) ( & MAC_(die_mem_stack_16) ); |
| 1313 | VG_(init_die_mem_stack_32) ( & MAC_(die_mem_stack_32) ); |
| 1314 | VG_(init_die_mem_stack) ( & MAC_(die_mem_stack) ); |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 1315 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1316 | VG_(init_ban_mem_stack) ( & ac_make_noaccess ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1317 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1318 | VG_(init_pre_mem_read) ( & ac_check_is_readable ); |
| 1319 | VG_(init_pre_mem_read_asciiz) ( & ac_check_is_readable_asciiz ); |
| 1320 | VG_(init_pre_mem_write) ( & ac_check_is_writable ); |
njn | abb14ad | 2004-11-24 16:57:16 +0000 | [diff] [blame] | 1321 | VG_(init_post_mem_write) ( & ac_post_mem_write ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1322 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1323 | VGP_(register_profile_event) ( VgpSetMem, "set-mem-perms" ); |
| 1324 | VGP_(register_profile_event) ( VgpCheckMem, "check-mem-perms" ); |
njn | 9b007f6 | 2003-04-07 14:40:25 +0000 | [diff] [blame] | 1325 | VGP_(register_profile_event) ( VgpESPAdj, "adjust-ESP" ); |
njn | d04b7c6 | 2002-10-03 14:05:52 +0000 | [diff] [blame] | 1326 | |
| 1327 | init_shadow_memory(); |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1328 | MAC_(common_pre_clo_init)(); |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 1329 | } |
| 1330 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1331 | void TL_(post_clo_init) ( void ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 1332 | { |
| 1333 | } |
| 1334 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1335 | void TL_(fini) ( Int exitcode ) |
njn | 5c004e4 | 2002-11-18 11:04:50 +0000 | [diff] [blame] | 1336 | { |
njn | 3e88418 | 2003-04-15 13:03:23 +0000 | [diff] [blame] | 1337 | MAC_(common_fini)( ac_detect_memory_leaks ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1338 | } |
| 1339 | |
njn | 26f0251 | 2004-11-22 18:33:15 +0000 | [diff] [blame] | 1340 | VG_DETERMINE_INTERFACE_VERSION(TL_(pre_clo_init), 1./8) |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1341 | |
| 1342 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1343 | /*--------------------------------------------------------------------*/ |
njn25 | cac76cb | 2002-09-23 11:21:57 +0000 | [diff] [blame] | 1344 | /*--- end ac_main.c ---*/ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1345 | /*--------------------------------------------------------------------*/ |