sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2 | /*--------------------------------------------------------------------*/ |
| 3 | /*--- Management of symbols and debugging information. ---*/ |
njn | ea27e46 | 2005-05-31 02:38:09 +0000 | [diff] [blame] | 4 | /*--- symtab.c ---*/ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 5 | /*--------------------------------------------------------------------*/ |
| 6 | |
| 7 | /* |
njn | b9c427c | 2004-12-01 14:14:42 +0000 | [diff] [blame] | 8 | This file is part of Valgrind, a dynamic binary instrumentation |
| 9 | framework. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 10 | |
njn | 5361242 | 2005-03-12 16:22:54 +0000 | [diff] [blame] | 11 | Copyright (C) 2000-2005 Julian Seward |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 12 | jseward@acm.org |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 13 | |
| 14 | This program is free software; you can redistribute it and/or |
| 15 | modify it under the terms of the GNU General Public License as |
| 16 | published by the Free Software Foundation; either version 2 of the |
| 17 | License, or (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, but |
| 20 | WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 22 | General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 27 | 02111-1307, USA. |
| 28 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 29 | The GNU General Public License is contained in the file COPYING. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 30 | */ |
| 31 | |
njn | c7561b9 | 2005-06-19 01:24:32 +0000 | [diff] [blame] | 32 | #include "pub_core_basics.h" |
| 33 | #include "pub_core_threadstate.h" |
njn | f4c5016 | 2005-06-20 14:18:12 +0000 | [diff] [blame] | 34 | #include "pub_core_debuginfo.h" |
njn | 94b1e2e | 2005-05-10 05:00:55 +0000 | [diff] [blame] | 35 | #include "pub_core_demangle.h" |
njn | 97405b2 | 2005-06-02 03:39:33 +0000 | [diff] [blame] | 36 | #include "pub_core_libcbase.h" |
njn | 132bfcc | 2005-06-04 19:16:06 +0000 | [diff] [blame] | 37 | #include "pub_core_libcassert.h" |
njn | eb8896b | 2005-06-04 20:03:55 +0000 | [diff] [blame] | 38 | #include "pub_core_libcfile.h" |
njn | 36a20fa | 2005-06-03 03:08:39 +0000 | [diff] [blame] | 39 | #include "pub_core_libcprint.h" |
njn | f536bbb | 2005-06-13 04:21:38 +0000 | [diff] [blame] | 40 | #include "pub_core_machine.h" |
njn | af1d7df | 2005-06-11 01:31:52 +0000 | [diff] [blame] | 41 | #include "pub_core_mallocfree.h" |
njn | 2024234 | 2005-05-16 23:31:24 +0000 | [diff] [blame] | 42 | #include "pub_core_options.h" |
njn | d1af003 | 2005-05-29 17:01:48 +0000 | [diff] [blame] | 43 | #include "pub_core_redir.h" |
njn | f4c5016 | 2005-06-20 14:18:12 +0000 | [diff] [blame] | 44 | #include "pub_core_tooliface.h" // For VG_(needs).data_syms |
njn | dab4e4b | 2005-06-26 14:48:23 +0000 | [diff] [blame] | 45 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 46 | #include "pub_core_aspacemgr.h" |
| 47 | |
njn | dab4e4b | 2005-06-26 14:48:23 +0000 | [diff] [blame] | 48 | #include "priv_symtypes.h" |
njn | ea27e46 | 2005-05-31 02:38:09 +0000 | [diff] [blame] | 49 | #include "priv_symtab.h" |
sewardj | 55f9d1a | 2005-04-25 11:11:44 +0000 | [diff] [blame] | 50 | |
njn | 43b9a8a | 2005-05-10 04:37:01 +0000 | [diff] [blame] | 51 | #include <elf.h> /* ELF defns */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 52 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 53 | /* The root structure for the entire symbol table system. It is a |
| 54 | linked list of SegInfos. Note that this entire mechanism assumes |
| 55 | that what we read from /proc/self/maps doesn't contain overlapping |
| 56 | address ranges, and as a result the SegInfos in this list describe |
| 57 | disjoint address ranges. |
| 58 | */ |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 59 | static SegInfo* segInfo_list = NULL; |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 60 | |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 61 | /*------------------------------------------------------------*/ |
| 62 | /*--- 32/64-bit parameterisation ---*/ |
| 63 | /*------------------------------------------------------------*/ |
| 64 | |
| 65 | /* For all the ELF macros and types which specify '32' or '64', |
| 66 | select the correct variant for this platform and give it |
| 67 | an 'XX' name. Then use the 'XX' variant consistently in |
| 68 | the rest of this file. |
| 69 | */ |
njn | a37029a | 2005-05-15 03:56:26 +0000 | [diff] [blame] | 70 | #if VG_WORDSIZE == 4 |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 71 | # define ElfXX_Ehdr Elf32_Ehdr |
| 72 | # define ElfXX_Shdr Elf32_Shdr |
| 73 | # define ElfXX_Phdr Elf32_Phdr |
| 74 | # define ElfXX_Sym Elf32_Sym |
| 75 | # define ElfXX_Word Elf32_Word |
| 76 | # define ElfXX_Addr Elf32_Addr |
| 77 | # define ElfXX_Dyn Elf32_Dyn |
| 78 | # define ELFXX_ST_BIND ELF32_ST_BIND |
| 79 | # define ELFXX_ST_TYPE ELF32_ST_TYPE |
| 80 | |
njn | a37029a | 2005-05-15 03:56:26 +0000 | [diff] [blame] | 81 | #elif VG_WORDSIZE == 8 |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 82 | # define ElfXX_Ehdr Elf64_Ehdr |
| 83 | # define ElfXX_Shdr Elf64_Shdr |
| 84 | # define ElfXX_Phdr Elf64_Phdr |
| 85 | # define ElfXX_Sym Elf64_Sym |
| 86 | # define ElfXX_Word Elf64_Word |
| 87 | # define ElfXX_Addr Elf64_Addr |
| 88 | # define ElfXX_Dyn Elf64_Dyn |
| 89 | # define ELFXX_ST_BIND ELF64_ST_BIND |
| 90 | # define ELFXX_ST_TYPE ELF64_ST_TYPE |
| 91 | |
| 92 | #else |
njn | a37029a | 2005-05-15 03:56:26 +0000 | [diff] [blame] | 93 | # error "VG_WORDSIZE should be 4 or 8" |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 94 | #endif |
| 95 | |
| 96 | |
| 97 | /*------------------------------------------------------------*/ |
sewardj | 0d1a896 | 2005-09-28 01:23:25 +0000 | [diff] [blame] | 98 | /*--- Forwards decls ---*/ |
| 99 | /*------------------------------------------------------------*/ |
| 100 | |
| 101 | static Bool is_elf_object_file ( const void *buf ); |
| 102 | static void unload_symbols ( Addr start, SizeT length ); |
| 103 | |
| 104 | |
| 105 | /*------------------------------------------------------------*/ |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 106 | /*--- TOP LEVEL ---*/ |
| 107 | /*------------------------------------------------------------*/ |
| 108 | |
| 109 | /* If this mapping is at the beginning of a file, isn't part of |
| 110 | Valgrind, is at least readable and seems to contain an object |
| 111 | file, then try reading symbols from it. |
| 112 | |
| 113 | Getting this heuristic right is critical. On x86-linux, |
| 114 | objects are typically mapped twice: |
| 115 | |
| 116 | 1b8fb000-1b8ff000 r-xp 00000000 08:02 4471477 vgpreload_memcheck.so |
| 117 | 1b8ff000-1b900000 rw-p 00004000 08:02 4471477 vgpreload_memcheck.so |
| 118 | |
| 119 | whereas ppc32-linux mysteriously does this: |
| 120 | |
| 121 | 118a6000-118ad000 r-xp 00000000 08:05 14209428 vgpreload_memcheck.so |
| 122 | 118ad000-118b6000 ---p 00007000 08:05 14209428 vgpreload_memcheck.so |
| 123 | 118b6000-118bd000 rwxp 00000000 08:05 14209428 vgpreload_memcheck.so |
| 124 | |
| 125 | The third mapping should not be considered to have executable code in. |
| 126 | Therefore a test which works for both is: r and x and NOT w. Reading |
| 127 | symbols from the rwx segment -- which overlaps the r-x segment in the |
| 128 | file -- causes the redirection mechanism to redirect to addresses in |
| 129 | that third segment, which is wrong and causes crashes. |
sewardj | 018895d | 2005-12-28 15:19:39 +0000 | [diff] [blame] | 130 | |
| 131 | ------ |
| 132 | JRS 28 Dec 05: unfortunately icc 8.1 on x86 has been seen to |
| 133 | produce executables with a single rwx segment rather than a |
| 134 | (r-x,rw-) pair. That means the rules have to be modified thusly: |
| 135 | |
| 136 | x86-linux: consider if r and x |
| 137 | all others: consider if r and x and NOT w |
| 138 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 139 | */ |
| 140 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 141 | static void nuke_syms_in_range ( Addr start, SizeT length ) |
| 142 | { |
| 143 | /* Repeatedly scan the segInfo list, looking for segInfos in this |
| 144 | range, and call unload_symbols on the segInfo's stated start |
| 145 | point. This modifies the list, hence the multiple |
| 146 | iterations. */ |
| 147 | Bool found; |
| 148 | SegInfo* curr; |
| 149 | |
| 150 | while (True) { |
| 151 | found = False; |
| 152 | |
| 153 | curr = segInfo_list; |
| 154 | while (True) { |
| 155 | if (curr == NULL) break; |
sewardj | 018895d | 2005-12-28 15:19:39 +0000 | [diff] [blame] | 156 | if (start+length-1 < curr->start |
| 157 | || curr->start+curr->size-1 < start) { |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 158 | /* no overlap */ |
| 159 | } else { |
| 160 | found = True; |
| 161 | break; |
| 162 | } |
| 163 | curr = curr->next; |
| 164 | } |
| 165 | |
| 166 | if (!found) break; |
| 167 | unload_symbols( curr->start, curr->size ); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 168 | } |
| 169 | } |
| 170 | |
sewardj | f72cced | 2005-11-08 00:45:47 +0000 | [diff] [blame] | 171 | /* Notify the debuginfo system about a new mapping. This is the way |
| 172 | new debug information gets loaded. If allow_SkFileV is True, it |
| 173 | will try load debug info if the mapping at 'a' belongs to Valgrind; |
| 174 | whereas normally (False) it will not do that. This allows us to |
| 175 | carefully control when the thing will read symbols from the |
| 176 | Valgrind executable itself. */ |
| 177 | |
| 178 | void VG_(di_notify_mmap)( Addr a, Bool allow_SkFileV ) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 179 | { |
| 180 | NSegment* seg; |
| 181 | HChar* filename; |
| 182 | Bool ok; |
| 183 | |
sewardj | 018895d | 2005-12-28 15:19:39 +0000 | [diff] [blame] | 184 | /* See comment at start of section for explanation of this do/don't |
| 185 | logic. */ |
| 186 | # if defined(VGP_x86_linux) |
| 187 | Bool require_no_W = False; |
| 188 | # else |
| 189 | Bool require_no_W = True; |
| 190 | # endif |
| 191 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 192 | seg = VG_(am_find_nsegment)(a); |
| 193 | vg_assert(seg); |
| 194 | |
| 195 | filename = VG_(am_get_filename)( seg ); |
| 196 | if (!filename) |
| 197 | return; |
| 198 | |
| 199 | filename = VG_(arena_strdup)( VG_AR_SYMTAB, filename ); |
| 200 | |
sewardj | f72cced | 2005-11-08 00:45:47 +0000 | [diff] [blame] | 201 | ok = (seg->kind == SkFileC || (seg->kind == SkFileV && allow_SkFileV)) |
| 202 | && seg->offset == 0 |
| 203 | && seg->fnIdx != -1 |
| 204 | && seg->hasR |
| 205 | && seg->hasX |
sewardj | 018895d | 2005-12-28 15:19:39 +0000 | [diff] [blame] | 206 | && (require_no_W ? (!seg->hasW) : True) |
sewardj | f72cced | 2005-11-08 00:45:47 +0000 | [diff] [blame] | 207 | && is_elf_object_file( (const void*)seg->start ); |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 208 | |
| 209 | if (!ok) { |
| 210 | VG_(arena_free)(VG_AR_SYMTAB, filename); |
| 211 | return; |
| 212 | } |
| 213 | |
| 214 | nuke_syms_in_range( seg->start, seg->end + 1 - seg->start ); |
| 215 | VG_(read_seg_symbols)( seg->start, seg->end + 1 - seg->start, |
| 216 | seg->offset, filename ); |
| 217 | |
| 218 | /* VG_(read_seg_symbols) makes its own copy of filename, so is safe |
| 219 | to free it. */ |
| 220 | VG_(arena_free)(VG_AR_SYMTAB, filename); |
| 221 | } |
| 222 | |
| 223 | void VG_(di_notify_munmap)( Addr a, SizeT len ) |
| 224 | { |
| 225 | nuke_syms_in_range(a, len); |
| 226 | } |
| 227 | |
| 228 | void VG_(di_notify_mprotect)( Addr a, SizeT len, UInt prot ) |
| 229 | { |
| 230 | Bool exe_ok = toBool(prot & VKI_PROT_EXEC); |
| 231 | # if defined(VGP_x86_linux) |
| 232 | exe_ok = exe_ok || toBool(prot & VKI_PROT_READ); |
| 233 | # endif |
| 234 | if (0 && !exe_ok) |
| 235 | nuke_syms_in_range(a, len); |
| 236 | } |
| 237 | |
| 238 | |
| 239 | /*------------------------------------------------------------*/ |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 240 | /*--- ---*/ |
| 241 | /*------------------------------------------------------------*/ |
| 242 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 243 | /* Majorly rewritten Sun 3 Feb 02 to enable loading symbols from |
| 244 | dlopen()ed libraries, which is something that KDE3 does a lot. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 245 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 246 | Stabs reader greatly improved by Nick Nethercote, Apr 02. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 247 | */ |
| 248 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 249 | static void freeSegInfo ( SegInfo* si ) |
| 250 | { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 251 | struct strchunk *chunk, *next; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 252 | vg_assert(si != NULL); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 253 | if (si->filename) VG_(arena_free)(VG_AR_SYMTAB, si->filename); |
| 254 | if (si->symtab) VG_(arena_free)(VG_AR_SYMTAB, si->symtab); |
| 255 | if (si->loctab) VG_(arena_free)(VG_AR_SYMTAB, si->loctab); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 256 | if (si->scopetab) VG_(arena_free)(VG_AR_SYMTAB, si->scopetab); |
sewardj | 5c638c2 | 2005-04-30 07:55:58 +0000 | [diff] [blame] | 257 | if (si->cfisi) VG_(arena_free)(VG_AR_SYMTAB, si->cfisi); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 258 | |
| 259 | for(chunk = si->strchunks; chunk != NULL; chunk = next) { |
| 260 | next = chunk->next; |
| 261 | VG_(arena_free)(VG_AR_SYMTAB, chunk); |
| 262 | } |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 263 | VG_(arena_free)(VG_AR_SYMTAB, si); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 264 | } |
| 265 | |
| 266 | |
| 267 | /*------------------------------------------------------------*/ |
| 268 | /*--- Adding stuff ---*/ |
| 269 | /*------------------------------------------------------------*/ |
| 270 | |
| 271 | /* Add a str to the string table, including terminating zero, and |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 272 | return pointer to the string in vg_strtab. Unless it's been seen |
| 273 | recently, in which case we find the old pointer and return that. |
| 274 | This avoids the most egregious duplications. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 275 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 276 | JSGF: changed from returning an index to a pointer, and changed to |
| 277 | a chunking memory allocator rather than reallocating, so the |
| 278 | pointers are stable. |
| 279 | */ |
| 280 | |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 281 | Char* ML_(addStr) ( SegInfo* si, Char* str, Int len ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 282 | { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 283 | struct strchunk *chunk; |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 284 | Int space_needed; |
| 285 | Char* p; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 286 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 287 | if (len == -1) |
| 288 | len = VG_(strlen)(str); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 289 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 290 | space_needed = 1 + len; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 291 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 292 | // Allocate a new strtab chunk if necessary |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 293 | if (si->strchunks == NULL || |
| 294 | (si->strchunks->strtab_used + space_needed) > STRCHUNKSIZE) { |
| 295 | chunk = VG_(arena_malloc)(VG_AR_SYMTAB, sizeof(*chunk)); |
| 296 | chunk->strtab_used = 0; |
| 297 | chunk->next = si->strchunks; |
| 298 | si->strchunks = chunk; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 299 | } |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 300 | chunk = si->strchunks; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 301 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 302 | p = &chunk->strtab[chunk->strtab_used]; |
| 303 | VG_(memcpy)(p, str, len); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 304 | chunk->strtab[chunk->strtab_used+len] = '\0'; |
| 305 | chunk->strtab_used += space_needed; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 306 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 307 | return p; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 308 | } |
| 309 | |
| 310 | /* Add a symbol to the symbol table. */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 311 | static __inline__ |
| 312 | void addSym ( SegInfo* si, RiSym* sym ) |
| 313 | { |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 314 | UInt new_sz, i; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 315 | RiSym* new_tab; |
| 316 | |
| 317 | /* Ignore zero-sized syms. */ |
| 318 | if (sym->size == 0) return; |
| 319 | |
| 320 | if (si->symtab_used == si->symtab_size) { |
| 321 | new_sz = 2 * si->symtab_size; |
| 322 | if (new_sz == 0) new_sz = 500; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 323 | new_tab = VG_(arena_malloc)(VG_AR_SYMTAB, new_sz * sizeof(RiSym) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 324 | if (si->symtab != NULL) { |
| 325 | for (i = 0; i < si->symtab_used; i++) |
| 326 | new_tab[i] = si->symtab[i]; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 327 | VG_(arena_free)(VG_AR_SYMTAB, si->symtab); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 328 | } |
| 329 | si->symtab = new_tab; |
| 330 | si->symtab_size = new_sz; |
| 331 | } |
| 332 | |
| 333 | si->symtab[si->symtab_used] = *sym; |
| 334 | si->symtab_used++; |
| 335 | vg_assert(si->symtab_used <= si->symtab_size); |
| 336 | } |
| 337 | |
| 338 | /* Add a location to the location table. */ |
| 339 | |
| 340 | static __inline__ |
| 341 | void addLoc ( SegInfo* si, RiLoc* loc ) |
| 342 | { |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 343 | UInt new_sz, i; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 344 | RiLoc* new_tab; |
| 345 | |
njn | e0ee071 | 2002-05-03 16:41:05 +0000 | [diff] [blame] | 346 | /* Zero-sized locs should have been ignored earlier */ |
| 347 | vg_assert(loc->size > 0); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 348 | |
| 349 | if (si->loctab_used == si->loctab_size) { |
| 350 | new_sz = 2 * si->loctab_size; |
| 351 | if (new_sz == 0) new_sz = 500; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 352 | new_tab = VG_(arena_malloc)(VG_AR_SYMTAB, new_sz * sizeof(RiLoc) ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 353 | if (si->loctab != NULL) { |
| 354 | for (i = 0; i < si->loctab_used; i++) |
| 355 | new_tab[i] = si->loctab[i]; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 356 | VG_(arena_free)(VG_AR_SYMTAB, si->loctab); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 357 | } |
| 358 | si->loctab = new_tab; |
| 359 | si->loctab_size = new_sz; |
| 360 | } |
| 361 | |
| 362 | si->loctab[si->loctab_used] = *loc; |
| 363 | si->loctab_used++; |
| 364 | vg_assert(si->loctab_used <= si->loctab_size); |
| 365 | } |
| 366 | |
| 367 | |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 368 | /* Top-level place to call to add a source-location mapping entry. */ |
| 369 | |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 370 | void ML_(addLineInfo) ( SegInfo* si, |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 371 | Char* filename, |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 372 | Char* dirname, /* NULL == directory is unknown */ |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 373 | Addr this, |
| 374 | Addr next, |
| 375 | Int lineno, |
| 376 | Int entry /* only needed for debug printing */ |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 377 | ) |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 378 | { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 379 | static const Bool debug = False; |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 380 | RiLoc loc; |
| 381 | Int size = next - this; |
| 382 | |
| 383 | /* Ignore zero-sized locs */ |
| 384 | if (this == next) return; |
| 385 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 386 | if (debug) |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 387 | VG_(printf)( " src %s %s line %d %p-%p\n", |
| 388 | dirname ? dirname : (Char*)"(unknown)", |
| 389 | filename, lineno, this, next ); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 390 | |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 391 | /* Maximum sanity checking. Some versions of GNU as do a shabby |
| 392 | * job with stabs entries; if anything looks suspicious, revert to |
| 393 | * a size of 1. This should catch the instruction of interest |
| 394 | * (since if using asm-level debug info, one instruction will |
| 395 | * correspond to one line, unlike with C-level debug info where |
| 396 | * multiple instructions can map to the one line), but avoid |
| 397 | * catching any other instructions bogusly. */ |
thughes | c1c5795 | 2004-11-01 17:36:15 +0000 | [diff] [blame] | 398 | if (this > next) { |
| 399 | if (VG_(clo_verbosity) > 2) { |
| 400 | VG_(message)(Vg_DebugMsg, |
| 401 | "warning: line info addresses out of order " |
| 402 | "at entry %d: 0x%x 0x%x", entry, this, next); |
| 403 | } |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 404 | size = 1; |
| 405 | } |
| 406 | |
| 407 | if (size > MAX_LOC_SIZE) { |
sewardj | d84606d | 2002-06-18 01:04:57 +0000 | [diff] [blame] | 408 | if (0) |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 409 | VG_(message)(Vg_DebugMsg, |
sewardj | 08a50f6 | 2002-06-17 02:21:20 +0000 | [diff] [blame] | 410 | "warning: line info address range too large " |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 411 | "at entry %d: %d", entry, size); |
| 412 | size = 1; |
| 413 | } |
| 414 | |
sewardj | 08a50f6 | 2002-06-17 02:21:20 +0000 | [diff] [blame] | 415 | /* vg_assert(this < si->start + si->size && next-1 >= si->start); */ |
njn | e306ffe | 2002-06-08 13:34:17 +0000 | [diff] [blame] | 416 | if (this >= si->start + si->size || next-1 < si->start) { |
sewardj | d84606d | 2002-06-18 01:04:57 +0000 | [diff] [blame] | 417 | if (0) |
njn | 7a74054 | 2005-08-25 00:20:56 +0000 | [diff] [blame] | 418 | VG_(message)(Vg_DebugMsg, |
| 419 | "warning: ignoring line info entry falling " |
| 420 | "outside current SegInfo: %p %p %p %p", |
| 421 | si->start, si->start + si->size, |
| 422 | this, next-1); |
njn | e306ffe | 2002-06-08 13:34:17 +0000 | [diff] [blame] | 423 | return; |
| 424 | } |
| 425 | |
| 426 | vg_assert(lineno >= 0); |
| 427 | if (lineno > MAX_LINENO) { |
njn | 7a74054 | 2005-08-25 00:20:56 +0000 | [diff] [blame] | 428 | static Bool complained = False; |
| 429 | if (!complained) { |
| 430 | complained = True; |
| 431 | VG_(message)(Vg_UserMsg, |
| 432 | "warning: ignoring line info entry with " |
| 433 | "huge line number (%d)", lineno); |
| 434 | VG_(message)(Vg_UserMsg, |
| 435 | " Can't handle line numbers " |
| 436 | "greater than %d, sorry", MAX_LINENO); |
| 437 | VG_(message)(Vg_UserMsg, |
| 438 | "(Nb: this message is only shown once)"); |
| 439 | } |
| 440 | return; |
njn | e306ffe | 2002-06-08 13:34:17 +0000 | [diff] [blame] | 441 | } |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 442 | |
| 443 | loc.addr = this; |
| 444 | loc.size = (UShort)size; |
| 445 | loc.lineno = lineno; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 446 | loc.filename = filename; |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 447 | loc.dirname = dirname; |
sewardj | b642dc2 | 2002-10-12 17:27:16 +0000 | [diff] [blame] | 448 | |
| 449 | if (0) VG_(message)(Vg_DebugMsg, |
| 450 | "addLoc: addr %p, size %d, line %d, file %s", |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 451 | this,size,lineno,filename); |
sewardj | b642dc2 | 2002-10-12 17:27:16 +0000 | [diff] [blame] | 452 | |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 453 | addLoc ( si, &loc ); |
| 454 | } |
| 455 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 456 | static __inline__ |
| 457 | void addScopeRange ( SegInfo* si, ScopeRange *range ) |
| 458 | { |
| 459 | Int new_sz, i; |
| 460 | ScopeRange* new_tab; |
| 461 | |
| 462 | /* Zero-sized scopes should have been ignored earlier */ |
| 463 | vg_assert(range->size > 0); |
| 464 | |
| 465 | if (si->scopetab_used == si->scopetab_size) { |
| 466 | new_sz = 2 * si->scopetab_size; |
| 467 | if (new_sz == 0) new_sz = 500; |
| 468 | new_tab = VG_(arena_malloc)(VG_AR_SYMTAB, new_sz * sizeof(*new_tab) ); |
| 469 | if (si->scopetab != NULL) { |
| 470 | for (i = 0; i < si->scopetab_used; i++) |
| 471 | new_tab[i] = si->scopetab[i]; |
| 472 | VG_(arena_free)(VG_AR_SYMTAB, si->scopetab); |
| 473 | } |
| 474 | si->scopetab = new_tab; |
| 475 | si->scopetab_size = new_sz; |
| 476 | } |
| 477 | |
| 478 | si->scopetab[si->scopetab_used] = *range; |
| 479 | si->scopetab_used++; |
| 480 | vg_assert(si->scopetab_used <= si->scopetab_size); |
| 481 | } |
| 482 | |
| 483 | |
| 484 | /* Top-level place to call to add a source-location mapping entry. */ |
| 485 | |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 486 | void ML_(addScopeInfo) ( SegInfo* si, |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 487 | Addr this, |
| 488 | Addr next, |
| 489 | Scope *scope) |
| 490 | { |
| 491 | static const Bool debug = False; |
| 492 | Int size = next - this; |
| 493 | ScopeRange range; |
| 494 | |
fitzhardinge | 83d8a71 | 2004-02-05 22:58:37 +0000 | [diff] [blame] | 495 | /* Ignore zero-sized or negative scopes */ |
| 496 | if (size <= 0) { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 497 | if (debug) |
| 498 | VG_(printf)("ignoring zero-sized range, scope %p at %p\n", scope, this); |
| 499 | return; |
| 500 | } |
| 501 | |
| 502 | if (debug) |
| 503 | VG_(printf)("adding scope range %p-%p (size=%d) scope %p (%d)\n", |
| 504 | this, next, next-this, scope, scope->depth); |
| 505 | |
| 506 | range.addr = this; |
| 507 | range.size = size; |
| 508 | range.scope = scope; |
| 509 | |
| 510 | addScopeRange ( si, &range ); |
| 511 | } |
| 512 | |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 513 | |
| 514 | /* Top-level place to call to add a CFI summary record. The supplied |
| 515 | CfiSI is copied. */ |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 516 | void ML_(addCfiSI) ( SegInfo* si, CfiSI* cfisi ) |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 517 | { |
| 518 | static const Bool debug = False; |
tom | 60a4b0b | 2005-10-12 10:45:27 +0000 | [diff] [blame] | 519 | UInt new_sz, i; |
| 520 | CfiSI* new_tab; |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 521 | |
| 522 | if (debug) { |
| 523 | VG_(printf)("adding CfiSI: "); |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 524 | ML_(ppCfiSI)(cfisi); |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 525 | } |
| 526 | |
sewardj | 6b2eefa | 2005-05-20 02:10:45 +0000 | [diff] [blame] | 527 | vg_assert(cfisi->len > 0 && cfisi->len < 2000000); |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 528 | |
sewardj | c4f204f | 2005-05-03 15:23:00 +0000 | [diff] [blame] | 529 | /* Rule out ones which are completely outside the segment. These |
| 530 | probably indicate some kind of bug, but for the meantime ignore |
| 531 | them. */ |
| 532 | if ( cfisi->base + cfisi->len - 1 < si->start |
| 533 | || si->start + si->size - 1 < cfisi->base ) { |
sewardj | 55022aa | 2005-05-03 16:05:00 +0000 | [diff] [blame] | 534 | static Int complaints = 3; |
| 535 | if (VG_(clo_trace_cfi) || complaints > 0) { |
| 536 | complaints--; |
sewardj | be18a59 | 2005-05-06 17:01:21 +0000 | [diff] [blame] | 537 | if (VG_(clo_verbosity) > 1) { |
| 538 | VG_(message)( |
| 539 | Vg_DebugMsg, |
| 540 | "warning: CfiSI %p .. %p outside segment %p .. %p", |
| 541 | cfisi->base, |
| 542 | cfisi->base + cfisi->len - 1, |
| 543 | si->start, |
| 544 | si->start + si->size - 1 |
| 545 | ); |
| 546 | } |
sewardj | 55022aa | 2005-05-03 16:05:00 +0000 | [diff] [blame] | 547 | if (VG_(clo_trace_cfi)) |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 548 | ML_(ppCfiSI)(cfisi); |
sewardj | c4f204f | 2005-05-03 15:23:00 +0000 | [diff] [blame] | 549 | } |
| 550 | return; |
| 551 | } |
| 552 | |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 553 | if (si->cfisi_used == si->cfisi_size) { |
| 554 | new_sz = 2 * si->cfisi_size; |
| 555 | if (new_sz == 0) new_sz = 20; |
| 556 | new_tab = VG_(arena_malloc)(VG_AR_SYMTAB, new_sz * sizeof(CfiSI) ); |
| 557 | if (si->cfisi != NULL) { |
| 558 | for (i = 0; i < si->cfisi_used; i++) |
| 559 | new_tab[i] = si->cfisi[i]; |
| 560 | VG_(arena_free)(VG_AR_SYMTAB, si->cfisi); |
| 561 | } |
| 562 | si->cfisi = new_tab; |
| 563 | si->cfisi_size = new_sz; |
| 564 | } |
| 565 | |
| 566 | si->cfisi[si->cfisi_used] = *cfisi; |
| 567 | si->cfisi_used++; |
| 568 | vg_assert(si->cfisi_used <= si->cfisi_size); |
| 569 | } |
| 570 | |
| 571 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 572 | /*------------------------------------------------------------*/ |
| 573 | /*--- Helpers ---*/ |
| 574 | /*------------------------------------------------------------*/ |
| 575 | |
| 576 | /* Non-fatal -- use vg_panic if terminal. */ |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 577 | void ML_(symerr) ( Char* msg ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 578 | { |
| 579 | if (VG_(clo_verbosity) > 1) |
njn | 1fd5eb2 | 2005-03-13 05:43:23 +0000 | [diff] [blame] | 580 | VG_(message)(Vg_DebugMsg,"%s", msg ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 581 | } |
| 582 | |
| 583 | |
| 584 | /* Print a symbol. */ |
| 585 | static |
| 586 | void printSym ( SegInfo* si, Int i ) |
| 587 | { |
| 588 | VG_(printf)( "%5d: %8p .. %8p (%d) %s\n", |
| 589 | i, |
| 590 | si->symtab[i].addr, |
| 591 | si->symtab[i].addr + si->symtab[i].size - 1, si->symtab[i].size, |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 592 | si->symtab[i].name ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 593 | } |
| 594 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 595 | #define TRACE_SYMTAB(format, args...) \ |
| 596 | if (VG_(clo_trace_symtab)) { VG_(printf)(format, ## args); } |
| 597 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 598 | |
| 599 | #if 0 |
| 600 | /* Print the entire sym tab. */ |
| 601 | static __attribute__ ((unused)) |
| 602 | void printSymtab ( void ) |
| 603 | { |
| 604 | Int i; |
| 605 | VG_(printf)("\n------ BEGIN vg_symtab ------\n"); |
| 606 | for (i = 0; i < vg_symtab_used; i++) |
| 607 | printSym(i); |
| 608 | VG_(printf)("------ BEGIN vg_symtab ------\n"); |
| 609 | } |
| 610 | #endif |
| 611 | |
| 612 | #if 0 |
| 613 | /* Paranoid strcat. */ |
| 614 | static |
| 615 | void safeCopy ( UChar* dst, UInt maxlen, UChar* src ) |
| 616 | { |
| 617 | UInt i = 0, j = 0; |
| 618 | while (True) { |
| 619 | if (i >= maxlen) return; |
| 620 | if (dst[i] == 0) break; |
| 621 | i++; |
| 622 | } |
| 623 | while (True) { |
| 624 | if (i >= maxlen) return; |
| 625 | dst[i] = src[j]; |
| 626 | if (src[j] == 0) return; |
| 627 | i++; j++; |
| 628 | } |
| 629 | } |
| 630 | #endif |
| 631 | |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 632 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 633 | /*------------------------------------------------------------*/ |
| 634 | /*--- Canonicalisers ---*/ |
| 635 | /*------------------------------------------------------------*/ |
| 636 | |
| 637 | /* Sort the symtab by starting address, and emit warnings if any |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 638 | symbols have overlapping address ranges. We use that old chestnut, |
| 639 | shellsort. Mash the table around so as to establish the property |
| 640 | that addresses are in order and the ranges to not overlap. This |
| 641 | facilitates using binary search to map addresses to symbols when we |
| 642 | come to query the table. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 643 | */ |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 644 | static Int compare_RiSym(void *va, void *vb) { |
| 645 | RiSym *a = (RiSym *)va; |
| 646 | RiSym *b = (RiSym *)vb; |
| 647 | |
nethercote | 05fdfac | 2004-08-01 20:24:46 +0000 | [diff] [blame] | 648 | if (a->addr < b->addr) return -1; |
| 649 | if (a->addr > b->addr) return 1; |
| 650 | return 0; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 651 | } |
| 652 | |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 653 | /* Two symbols have the same address. Which name do we prefer? |
| 654 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 655 | The general rule is to prefer the shorter symbol name. If the |
| 656 | symbol contains a '@', which means its versioned, then the length |
| 657 | up to the '@' is used for length comparison purposes (so |
| 658 | "foo@GLIBC_2.4.2" is considered shorter than "foobar"), but if two |
| 659 | symbols have the same length, the one with the version string is |
| 660 | preferred. If all else fails, use alphabetical ordering. |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 661 | |
| 662 | Very occasionally this goes wrong (eg. 'memcmp' and 'bcmp' are aliases |
| 663 | in glibc, we choose the 'bcmp' symbol because it's shorter, so we |
| 664 | can misdescribe memcmp() as bcmp()). This is hard to avoid. It's |
| 665 | mentioned in the FAQ file. |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 666 | */ |
| 667 | static RiSym *prefersym(RiSym *a, RiSym *b) |
| 668 | { |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 669 | Int lena, lenb; /* full length */ |
| 670 | Int vlena, vlenb; /* length without version */ |
| 671 | const Char *vpa, *vpb; |
fitzhardinge | efda47f | 2003-12-15 23:31:52 +0000 | [diff] [blame] | 672 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 673 | vlena = lena = VG_(strlen)(a->name); |
| 674 | vlenb = lenb = VG_(strlen)(b->name); |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 675 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 676 | vpa = VG_(strchr)(a->name, '@'); |
| 677 | vpb = VG_(strchr)(b->name, '@'); |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 678 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 679 | if (vpa) |
| 680 | vlena = vpa - a->name; |
| 681 | if (vpb) |
| 682 | vlenb = vpb - b->name; |
fitzhardinge | efda47f | 2003-12-15 23:31:52 +0000 | [diff] [blame] | 683 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 684 | TRACE_SYMTAB("choosing between '%s' and '%s'\n", a->name, b->name); |
| 685 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 686 | /* Select the shortest unversioned name */ |
| 687 | if (vlena < vlenb) |
| 688 | return a; |
| 689 | else if (vlenb < vlena) |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 690 | return b; |
| 691 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 692 | /* Equal lengths; select the versioned name */ |
| 693 | if (vpa && !vpb) |
| 694 | return a; |
| 695 | if (vpb && !vpa) |
| 696 | return b; |
| 697 | |
| 698 | /* Either both versioned or neither is versioned; select them |
| 699 | alphabetically */ |
| 700 | if (VG_(strcmp)(a->name, b->name) < 0) |
| 701 | return a; |
| 702 | else |
| 703 | return b; |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 704 | } |
| 705 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 706 | static |
| 707 | void canonicaliseSymtab ( SegInfo* si ) |
| 708 | { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 709 | Int i, j, n_merged, n_truncated; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 710 | Addr s1, s2, e1, e2; |
| 711 | |
| 712 | # define SWAP(ty,aa,bb) \ |
| 713 | do { ty tt = (aa); (aa) = (bb); (bb) = tt; } while (0) |
| 714 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 715 | if (si->symtab_used == 0) |
| 716 | return; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 717 | |
nethercote | 3acbb5d | 2003-11-13 21:50:45 +0000 | [diff] [blame] | 718 | VG_(ssort)(si->symtab, si->symtab_used, sizeof(*si->symtab), compare_RiSym); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 719 | |
| 720 | cleanup_more: |
| 721 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 722 | /* If two symbols have identical address ranges, we pick one |
| 723 | using prefersym() (see it for details). */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 724 | do { |
| 725 | n_merged = 0; |
| 726 | j = si->symtab_used; |
| 727 | si->symtab_used = 0; |
| 728 | for (i = 0; i < j; i++) { |
| 729 | if (i < j-1 |
| 730 | && si->symtab[i].addr == si->symtab[i+1].addr |
| 731 | && si->symtab[i].size == si->symtab[i+1].size) { |
| 732 | n_merged++; |
| 733 | /* merge the two into one */ |
fitzhardinge | 1c76dc4 | 2003-12-15 09:00:21 +0000 | [diff] [blame] | 734 | si->symtab[si->symtab_used++] = *prefersym(&si->symtab[i], &si->symtab[i+1]); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 735 | i++; |
| 736 | } else { |
| 737 | si->symtab[si->symtab_used++] = si->symtab[i]; |
| 738 | } |
| 739 | } |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 740 | TRACE_SYMTAB( "%d merged\n", n_merged); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 741 | } |
| 742 | while (n_merged > 0); |
| 743 | |
| 744 | /* Detect and "fix" overlapping address ranges. */ |
| 745 | n_truncated = 0; |
| 746 | |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 747 | for (i = 0; i < ((Int)si->symtab_used) -1; i++) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 748 | |
| 749 | vg_assert(si->symtab[i].addr <= si->symtab[i+1].addr); |
| 750 | |
| 751 | /* Check for common (no overlap) case. */ |
| 752 | if (si->symtab[i].addr + si->symtab[i].size |
| 753 | <= si->symtab[i+1].addr) |
| 754 | continue; |
| 755 | |
| 756 | /* There's an overlap. Truncate one or the other. */ |
| 757 | if (VG_(clo_trace_symtab)) { |
| 758 | VG_(printf)("overlapping address ranges in symbol table\n\t"); |
| 759 | printSym(si,i); |
| 760 | VG_(printf)("\t"); |
| 761 | printSym(si,i+1); |
| 762 | VG_(printf)("\n"); |
| 763 | } |
| 764 | |
| 765 | /* Truncate one or the other. */ |
| 766 | s1 = si->symtab[i].addr; |
| 767 | s2 = si->symtab[i+1].addr; |
| 768 | e1 = s1 + si->symtab[i].size - 1; |
| 769 | e2 = s2 + si->symtab[i+1].size - 1; |
| 770 | if (s1 < s2) { |
| 771 | e1 = s2-1; |
| 772 | } else { |
| 773 | vg_assert(s1 == s2); |
| 774 | if (e1 > e2) { |
| 775 | s1 = e2+1; SWAP(Addr,s1,s2); SWAP(Addr,e1,e2); |
| 776 | } else |
| 777 | if (e1 < e2) { |
| 778 | s2 = e1+1; |
| 779 | } else { |
| 780 | /* e1 == e2. Identical addr ranges. We'll eventually wind |
| 781 | up back at cleanup_more, which will take care of it. */ |
| 782 | } |
| 783 | } |
| 784 | si->symtab[i].addr = s1; |
| 785 | si->symtab[i+1].addr = s2; |
| 786 | si->symtab[i].size = e1 - s1 + 1; |
| 787 | si->symtab[i+1].size = e2 - s2 + 1; |
| 788 | vg_assert(s1 <= s2); |
| 789 | vg_assert(si->symtab[i].size > 0); |
| 790 | vg_assert(si->symtab[i+1].size > 0); |
| 791 | /* It may be that the i+1 entry now needs to be moved further |
| 792 | along to maintain the address order requirement. */ |
| 793 | j = i+1; |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 794 | while (j < ((Int)si->symtab_used)-1 |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 795 | && si->symtab[j].addr > si->symtab[j+1].addr) { |
| 796 | SWAP(RiSym,si->symtab[j],si->symtab[j+1]); |
| 797 | j++; |
| 798 | } |
| 799 | n_truncated++; |
| 800 | } |
| 801 | |
| 802 | if (n_truncated > 0) goto cleanup_more; |
| 803 | |
| 804 | /* Ensure relevant postconditions hold. */ |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 805 | for (i = 0; i < ((Int)si->symtab_used)-1; i++) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 806 | /* No zero-sized symbols. */ |
| 807 | vg_assert(si->symtab[i].size > 0); |
| 808 | /* In order. */ |
| 809 | vg_assert(si->symtab[i].addr < si->symtab[i+1].addr); |
| 810 | /* No overlaps. */ |
| 811 | vg_assert(si->symtab[i].addr + si->symtab[i].size - 1 |
| 812 | < si->symtab[i+1].addr); |
| 813 | } |
| 814 | # undef SWAP |
| 815 | } |
| 816 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 817 | /* Sort the scope range table by starting address. Mash the table |
| 818 | around so as to establish the property that addresses are in order |
| 819 | and the ranges do not overlap. This facilitates using binary |
| 820 | search to map addresses to scopes when we come to query the |
| 821 | table. |
| 822 | */ |
| 823 | static Int compare_ScopeRange(void *va, void *vb) { |
| 824 | ScopeRange *a = (ScopeRange *)va; |
| 825 | ScopeRange *b = (ScopeRange *)vb; |
| 826 | |
nethercote | 05fdfac | 2004-08-01 20:24:46 +0000 | [diff] [blame] | 827 | if (a->addr < b->addr) return -1; |
| 828 | if (a->addr > b->addr) return 1; |
| 829 | return 0; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 830 | } |
| 831 | |
| 832 | static |
| 833 | void canonicaliseScopetab ( SegInfo* si ) |
| 834 | { |
| 835 | Int i,j; |
| 836 | |
| 837 | if (si->scopetab_used == 0) |
| 838 | return; |
| 839 | |
| 840 | /* Sort by start address. */ |
nethercote | 3acbb5d | 2003-11-13 21:50:45 +0000 | [diff] [blame] | 841 | VG_(ssort)(si->scopetab, si->scopetab_used, sizeof(*si->scopetab), |
| 842 | compare_ScopeRange); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 843 | |
| 844 | /* If two adjacent entries overlap, truncate the first. */ |
| 845 | for (i = 0; i < si->scopetab_used-1; i++) { |
| 846 | if (si->scopetab[i].addr + si->scopetab[i].size > si->scopetab[i+1].addr) { |
| 847 | Int new_size = si->scopetab[i+1].addr - si->scopetab[i].addr; |
| 848 | |
| 849 | if (new_size < 0) |
| 850 | si->scopetab[i].size = 0; |
| 851 | else |
| 852 | si->scopetab[i].size = new_size; |
| 853 | } |
| 854 | } |
| 855 | |
| 856 | /* Zap any zero-sized entries resulting from the truncation |
| 857 | process. */ |
| 858 | j = 0; |
| 859 | for (i = 0; i < si->scopetab_used; i++) { |
| 860 | if (si->scopetab[i].size > 0) { |
sewardj | 7906958 | 2005-07-23 17:45:15 +0000 | [diff] [blame] | 861 | if (j != i) |
| 862 | si->scopetab[j] = si->scopetab[i]; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 863 | j++; |
| 864 | } |
| 865 | } |
| 866 | si->scopetab_used = j; |
| 867 | |
| 868 | /* Ensure relevant postconditions hold. */ |
| 869 | for (i = 0; i < si->scopetab_used-1; i++) { |
| 870 | /* |
| 871 | VG_(printf)("%d (%d) %d 0x%x\n", |
| 872 | i, si->scopetab[i+1].confident, |
| 873 | si->scopetab[i+1].size, si->scopetab[i+1].addr ); |
| 874 | */ |
| 875 | /* No zero-sized symbols. */ |
| 876 | vg_assert(si->scopetab[i].size > 0); |
| 877 | /* In order. */ |
| 878 | if (si->scopetab[i].addr >= si->scopetab[i+1].addr) |
| 879 | VG_(printf)("si->scopetab[%d] = %p,size=%d [%d] = %p,size=%d\n", |
| 880 | i, si->scopetab[i].addr, si->scopetab[i].size, |
| 881 | i+1, si->scopetab[i+1].addr, si->scopetab[i+1].size); |
| 882 | vg_assert(si->scopetab[i].addr < si->scopetab[i+1].addr); |
| 883 | /* No overlaps. */ |
| 884 | vg_assert(si->scopetab[i].addr + si->scopetab[i].size - 1 |
| 885 | < si->scopetab[i+1].addr); |
| 886 | } |
| 887 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 888 | |
| 889 | |
| 890 | /* Sort the location table by starting address. Mash the table around |
| 891 | so as to establish the property that addresses are in order and the |
| 892 | ranges do not overlap. This facilitates using binary search to map |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 893 | addresses to locations when we come to query the table. |
| 894 | */ |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 895 | static Int compare_RiLoc(void *va, void *vb) { |
| 896 | RiLoc *a = (RiLoc *)va; |
| 897 | RiLoc *b = (RiLoc *)vb; |
| 898 | |
nethercote | 05fdfac | 2004-08-01 20:24:46 +0000 | [diff] [blame] | 899 | if (a->addr < b->addr) return -1; |
| 900 | if (a->addr > b->addr) return 1; |
| 901 | return 0; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 902 | } |
| 903 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 904 | static |
| 905 | void canonicaliseLoctab ( SegInfo* si ) |
| 906 | { |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 907 | Int i, j; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 908 | |
| 909 | # define SWAP(ty,aa,bb) \ |
| 910 | do { ty tt = (aa); (aa) = (bb); (bb) = tt; } while (0); |
| 911 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 912 | if (si->loctab_used == 0) |
| 913 | return; |
| 914 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 915 | /* Sort by start address. */ |
nethercote | 3acbb5d | 2003-11-13 21:50:45 +0000 | [diff] [blame] | 916 | VG_(ssort)(si->loctab, si->loctab_used, sizeof(*si->loctab), compare_RiLoc); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 917 | |
| 918 | /* If two adjacent entries overlap, truncate the first. */ |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 919 | for (i = 0; i < ((Int)si->loctab_used)-1; i++) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 920 | vg_assert(si->loctab[i].size < 10000); |
| 921 | if (si->loctab[i].addr + si->loctab[i].size > si->loctab[i+1].addr) { |
| 922 | /* Do this in signed int32 because the actual .size fields |
njn | a168590 | 2005-03-16 04:09:21 +0000 | [diff] [blame] | 923 | are only 12 bits. */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 924 | Int new_size = si->loctab[i+1].addr - si->loctab[i].addr; |
| 925 | if (new_size < 0) { |
| 926 | si->loctab[i].size = 0; |
| 927 | } else |
njn | a168590 | 2005-03-16 04:09:21 +0000 | [diff] [blame] | 928 | if (new_size > MAX_LOC_SIZE) { |
| 929 | si->loctab[i].size = MAX_LOC_SIZE; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 930 | } else { |
| 931 | si->loctab[i].size = (UShort)new_size; |
| 932 | } |
| 933 | } |
| 934 | } |
| 935 | |
| 936 | /* Zap any zero-sized entries resulting from the truncation |
| 937 | process. */ |
| 938 | j = 0; |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 939 | for (i = 0; i < (Int)si->loctab_used; i++) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 940 | if (si->loctab[i].size > 0) { |
sewardj | 7906958 | 2005-07-23 17:45:15 +0000 | [diff] [blame] | 941 | if (j != i) |
| 942 | si->loctab[j] = si->loctab[i]; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 943 | j++; |
| 944 | } |
| 945 | } |
| 946 | si->loctab_used = j; |
| 947 | |
| 948 | /* Ensure relevant postconditions hold. */ |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 949 | for (i = 0; i < ((Int)si->loctab_used)-1; i++) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 950 | /* |
| 951 | VG_(printf)("%d (%d) %d 0x%x\n", |
| 952 | i, si->loctab[i+1].confident, |
| 953 | si->loctab[i+1].size, si->loctab[i+1].addr ); |
| 954 | */ |
| 955 | /* No zero-sized symbols. */ |
| 956 | vg_assert(si->loctab[i].size > 0); |
| 957 | /* In order. */ |
| 958 | vg_assert(si->loctab[i].addr < si->loctab[i+1].addr); |
| 959 | /* No overlaps. */ |
| 960 | vg_assert(si->loctab[i].addr + si->loctab[i].size - 1 |
| 961 | < si->loctab[i+1].addr); |
| 962 | } |
| 963 | # undef SWAP |
| 964 | } |
| 965 | |
| 966 | |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 967 | /* Sort the call-frame-info table by starting address. Mash the table |
| 968 | around so as to establish the property that addresses are in order |
| 969 | and the ranges do not overlap. This facilitates using binary |
| 970 | search to map addresses to locations when we come to query the |
| 971 | table. |
| 972 | |
| 973 | Also, set cfisi_minaddr and cfisi_maxaddr to be the min and max of |
| 974 | any of the address ranges contained in cfisi[0 .. cfisi_used-1], so |
| 975 | as to facilitate rapidly skipping this SegInfo when looking for an |
| 976 | address which falls outside that range. |
| 977 | */ |
| 978 | static Int compare_CfiSI(void *va, void *vb) { |
| 979 | CfiSI *a = (CfiSI*)va; |
| 980 | CfiSI *b = (CfiSI*)vb; |
| 981 | |
| 982 | if (a->base < b->base) return -1; |
| 983 | if (a->base > b->base) return 1; |
| 984 | return 0; |
| 985 | } |
| 986 | |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 987 | static |
| 988 | void canonicaliseCfiSI ( SegInfo* si ) |
| 989 | { |
sewardj | e75d157 | 2005-07-23 17:14:03 +0000 | [diff] [blame] | 990 | Int i, j; |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 991 | const Addr minAddr = 0; |
| 992 | const Addr maxAddr = ~minAddr; |
| 993 | |
sewardj | e75d157 | 2005-07-23 17:14:03 +0000 | [diff] [blame] | 994 | /* Note: take care in here. si->cfisi can be NULL, in which |
| 995 | case _used and _size fields will be zero. */ |
| 996 | if (si->cfisi == NULL) { |
| 997 | vg_assert(si->cfisi_used == 0); |
| 998 | vg_assert(si->cfisi_size == 0); |
| 999 | } |
| 1000 | |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 1001 | /* Set cfisi_minaddr and cfisi_maxaddr to summarise the entire |
| 1002 | address range contained in cfisi[0 .. cfisi_used-1]. */ |
| 1003 | si->cfisi_minaddr = maxAddr; |
| 1004 | si->cfisi_maxaddr = minAddr; |
sewardj | e75d157 | 2005-07-23 17:14:03 +0000 | [diff] [blame] | 1005 | for (i = 0; i < (Int)si->cfisi_used; i++) { |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 1006 | Addr here_min = si->cfisi[i].base; |
| 1007 | Addr here_max = si->cfisi[i].base + si->cfisi[i].len - 1; |
| 1008 | if (here_min < si->cfisi_minaddr) |
| 1009 | si->cfisi_minaddr = here_min; |
| 1010 | if (here_max > si->cfisi_maxaddr) |
| 1011 | si->cfisi_maxaddr = here_max; |
| 1012 | } |
sewardj | 520e349 | 2005-05-02 10:39:16 +0000 | [diff] [blame] | 1013 | |
| 1014 | if (VG_(clo_trace_cfi)) |
| 1015 | VG_(printf)("canonicaliseCfiSI: %d entries, %p .. %p\n", |
| 1016 | si->cfisi_used, |
| 1017 | si->cfisi_minaddr, si->cfisi_maxaddr); |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 1018 | |
| 1019 | /* Sort the cfisi array by base address. */ |
| 1020 | VG_(ssort)(si->cfisi, si->cfisi_used, sizeof(*si->cfisi), compare_CfiSI); |
| 1021 | |
sewardj | e75d157 | 2005-07-23 17:14:03 +0000 | [diff] [blame] | 1022 | /* If two adjacent entries overlap, truncate the first. */ |
| 1023 | for (i = 0; i < (Int)si->cfisi_used-1; i++) { |
| 1024 | if (si->cfisi[i].base + si->cfisi[i].len > si->cfisi[i+1].base) { |
| 1025 | Int new_len = si->cfisi[i+1].base - si->cfisi[i].base; |
| 1026 | /* how could it be otherwise? The entries are sorted by the |
| 1027 | .base field. */ |
| 1028 | vg_assert(new_len >= 0); |
| 1029 | vg_assert(new_len <= si->cfisi[i].len); |
| 1030 | si->cfisi[i].len = new_len; |
| 1031 | } |
| 1032 | } |
| 1033 | |
| 1034 | /* Zap any zero-sized entries resulting from the truncation |
| 1035 | process. */ |
| 1036 | j = 0; |
| 1037 | for (i = 0; i < (Int)si->cfisi_used; i++) { |
| 1038 | if (si->cfisi[i].len > 0) { |
sewardj | 7906958 | 2005-07-23 17:45:15 +0000 | [diff] [blame] | 1039 | if (j != i) |
| 1040 | si->cfisi[j] = si->cfisi[i]; |
sewardj | e75d157 | 2005-07-23 17:14:03 +0000 | [diff] [blame] | 1041 | j++; |
| 1042 | } |
| 1043 | } |
| 1044 | /* VG_(printf)("XXXXXXXXXXXXX %d %d\n", si->cfisi_used, j); */ |
| 1045 | si->cfisi_used = j; |
| 1046 | |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 1047 | /* Ensure relevant postconditions hold. */ |
sewardj | e75d157 | 2005-07-23 17:14:03 +0000 | [diff] [blame] | 1048 | for (i = 0; i < (Int)si->cfisi_used; i++) { |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 1049 | /* No zero-length ranges. */ |
| 1050 | vg_assert(si->cfisi[i].len > 0); |
| 1051 | /* Makes sense w.r.t. summary address range */ |
| 1052 | vg_assert(si->cfisi[i].base >= si->cfisi_minaddr); |
| 1053 | vg_assert(si->cfisi[i].base + si->cfisi[i].len - 1 |
| 1054 | <= si->cfisi_maxaddr); |
| 1055 | |
| 1056 | if (i < si->cfisi_used - 1) { |
sewardj | c4f204f | 2005-05-03 15:23:00 +0000 | [diff] [blame] | 1057 | /* |
| 1058 | if (!(si->cfisi[i].base < si->cfisi[i+1].base)) { |
| 1059 | VG_(printf)("\nOOO cfisis:\n"); |
cerion | 7b2c38c | 2005-06-23 07:52:54 +0000 | [diff] [blame] | 1060 | ML_(ppCfiSI)(&si->cfisi[i]); |
| 1061 | ML_(ppCfiSI)(&si->cfisi[i+1]); |
sewardj | c4f204f | 2005-05-03 15:23:00 +0000 | [diff] [blame] | 1062 | } |
| 1063 | */ |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 1064 | /* In order. */ |
| 1065 | vg_assert(si->cfisi[i].base < si->cfisi[i+1].base); |
| 1066 | /* No overlaps. */ |
| 1067 | vg_assert(si->cfisi[i].base + si->cfisi[i].len - 1 |
| 1068 | < si->cfisi[i+1].base); |
| 1069 | } |
| 1070 | } |
| 1071 | |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 1072 | } |
| 1073 | |
| 1074 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1075 | /*------------------------------------------------------------*/ |
sewardj | b51f2e6 | 2002-06-01 23:11:19 +0000 | [diff] [blame] | 1076 | /*--- Read info from a .so/exe file. ---*/ |
| 1077 | /*------------------------------------------------------------*/ |
| 1078 | |
sewardj | 0d1a896 | 2005-09-28 01:23:25 +0000 | [diff] [blame] | 1079 | static Bool is_elf_object_file(const void *buf) |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1080 | { |
| 1081 | { |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1082 | ElfXX_Ehdr *ehdr = (ElfXX_Ehdr *)buf; |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1083 | Int ok = 1; |
| 1084 | |
| 1085 | ok &= (ehdr->e_ident[EI_MAG0] == 0x7F |
| 1086 | && ehdr->e_ident[EI_MAG1] == 'E' |
| 1087 | && ehdr->e_ident[EI_MAG2] == 'L' |
| 1088 | && ehdr->e_ident[EI_MAG3] == 'F'); |
njn | af839f5 | 2005-06-23 03:27:57 +0000 | [diff] [blame] | 1089 | ok &= (ehdr->e_ident[EI_CLASS] == VG_ELF_CLASS |
sewardj | 6e340c7 | 2005-07-10 00:53:42 +0000 | [diff] [blame] | 1090 | && ehdr->e_ident[EI_DATA] == VG_ELF_DATA2XXX |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1091 | && ehdr->e_ident[EI_VERSION] == EV_CURRENT); |
| 1092 | ok &= (ehdr->e_type == ET_EXEC || ehdr->e_type == ET_DYN); |
njn | af839f5 | 2005-06-23 03:27:57 +0000 | [diff] [blame] | 1093 | ok &= (ehdr->e_machine == VG_ELF_MACHINE); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1094 | ok &= (ehdr->e_version == EV_CURRENT); |
| 1095 | ok &= (ehdr->e_shstrndx != SHN_UNDEF); |
| 1096 | ok &= (ehdr->e_shoff != 0 && ehdr->e_shnum != 0); |
| 1097 | ok &= (ehdr->e_phoff != 0 && ehdr->e_phnum != 0); |
| 1098 | |
| 1099 | if (ok) |
| 1100 | return True; |
| 1101 | } |
| 1102 | |
| 1103 | /* other file formats here? */ |
| 1104 | |
| 1105 | return False; |
| 1106 | } |
| 1107 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1108 | static Bool is_interesting_symbol(SegInfo* si, ElfXX_Sym* sym, |
| 1109 | Char* sym_name, Addr sym_addr) |
rjwalsh | e4e779d | 2004-04-16 23:02:29 +0000 | [diff] [blame] | 1110 | { |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1111 | /* Figure out if we're interested in the symbol. |
| 1112 | Firstly, is it of the right flavour? */ |
| 1113 | if ( ! ( (ELFXX_ST_BIND(sym->st_info) == STB_GLOBAL || |
| 1114 | ELFXX_ST_BIND(sym->st_info) == STB_LOCAL || |
| 1115 | ELFXX_ST_BIND(sym->st_info) == STB_WEAK) |
| 1116 | && |
| 1117 | (ELFXX_ST_TYPE(sym->st_info) == STT_FUNC || |
| 1118 | (VG_(needs).data_syms |
| 1119 | && ELFXX_ST_TYPE(sym->st_info) == STT_OBJECT)) |
| 1120 | ) |
| 1121 | ) |
| 1122 | return False; |
rjwalsh | e4e779d | 2004-04-16 23:02:29 +0000 | [diff] [blame] | 1123 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1124 | /* Secondly, if it's apparently in a GOT or PLT, it's really |
| 1125 | a reference to a symbol defined elsewhere, so ignore it. */ |
| 1126 | if (si->got_start != 0 |
| 1127 | && sym_addr >= si->got_start |
| 1128 | && sym_addr < si->got_start + si->got_size) { |
| 1129 | TRACE_SYMTAB("ignore -- in GOT: %s\n", sym_name); |
| 1130 | return False; |
rjwalsh | e4e779d | 2004-04-16 23:02:29 +0000 | [diff] [blame] | 1131 | } |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1132 | if (si->plt_start != 0 |
| 1133 | && sym_addr >= si->plt_start |
| 1134 | && sym_addr < si->plt_start + si->plt_size) { |
| 1135 | TRACE_SYMTAB("ignore -- in PLT: %s\n", sym_name); |
sewardj | 9ee81f5 | 2005-04-02 17:38:59 +0000 | [diff] [blame] | 1136 | return False; |
| 1137 | } |
| 1138 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1139 | /* Don't bother if nameless, or zero-sized. */ |
| 1140 | if (sym->st_name == (ElfXX_Word)NULL |
| 1141 | || /* VG_(strlen)(sym_name) == 0 */ |
| 1142 | /* equivalent but cheaper ... */ |
| 1143 | sym_name[0] == 0 |
| 1144 | || sym->st_size == 0) { |
| 1145 | TRACE_SYMTAB("ignore -- size=0: %s\n", sym_name); |
| 1146 | return False; |
sewardj | 9ee81f5 | 2005-04-02 17:38:59 +0000 | [diff] [blame] | 1147 | } |
| 1148 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1149 | /* This seems to significantly reduce the number of junk |
| 1150 | symbols, and particularly reduces the number of |
| 1151 | overlapping address ranges. Don't ask me why ... */ |
| 1152 | if ((Int)sym->st_value == 0) { |
| 1153 | TRACE_SYMTAB( "ignore -- valu=0: %s\n", sym_name); |
| 1154 | return False; |
| 1155 | } |
| 1156 | |
| 1157 | /* If no part of the symbol falls within the mapped range, |
| 1158 | ignore it. */ |
| 1159 | if (sym_addr+sym->st_size <= si->start |
| 1160 | || sym_addr >= si->start+si->size) { |
| 1161 | TRACE_SYMTAB( "ignore -- outside mapped range\n" ); |
| 1162 | return False; |
| 1163 | } |
| 1164 | |
| 1165 | // It is an interesting symbol! |
rjwalsh | e4e779d | 2004-04-16 23:02:29 +0000 | [diff] [blame] | 1166 | return True; |
| 1167 | } |
| 1168 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1169 | /* Read a symbol table (normal or dynamic) */ |
| 1170 | static |
rjwalsh | e4e779d | 2004-04-16 23:02:29 +0000 | [diff] [blame] | 1171 | void read_symtab( SegInfo* si, Char* tab_name, Bool do_intercepts, |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1172 | ElfXX_Sym* o_symtab, UInt o_symtab_sz, |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1173 | UChar* o_strtab, UInt o_strtab_sz ) |
| 1174 | { |
| 1175 | Int i; |
| 1176 | Addr sym_addr; |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1177 | Char* sym_name; |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1178 | RiSym risym; |
mueller | 82df83e | 2003-11-19 22:05:35 +0000 | [diff] [blame] | 1179 | Char* name; |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1180 | ElfXX_Sym* sym; |
mueller | 82df83e | 2003-11-19 22:05:35 +0000 | [diff] [blame] | 1181 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1182 | if (o_strtab == NULL || o_symtab == NULL) { |
jseward | 0edbfb5 | 2003-12-12 06:22:06 +0000 | [diff] [blame] | 1183 | Char buf[80]; |
| 1184 | vg_assert(VG_(strlen)(tab_name) < 40); |
| 1185 | VG_(sprintf)(buf, " object doesn't have a %s", tab_name); |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1186 | ML_(symerr)(buf); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1187 | return; |
| 1188 | } |
| 1189 | |
| 1190 | TRACE_SYMTAB("Reading %s (%d entries)\n", tab_name, |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1191 | o_symtab_sz/sizeof(ElfXX_Sym) ); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1192 | |
| 1193 | /* Perhaps should start at i = 1; ELF docs suggest that entry |
njn | 02bc4b8 | 2005-05-15 17:28:26 +0000 | [diff] [blame] | 1194 | 0 always denotes 'unknown symbol'. */ |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1195 | for (i = 1; i < (Int)(o_symtab_sz/sizeof(ElfXX_Sym)); i++) { |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1196 | sym = & o_symtab[i]; |
| 1197 | sym_name = (Char*)(o_strtab + sym->st_name); |
tom | f26d068 | 2005-04-02 14:57:43 +0000 | [diff] [blame] | 1198 | sym_addr = si->offset + sym->st_value; |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1199 | |
| 1200 | if (VG_(clo_trace_symtab)) { |
| 1201 | VG_(printf)("raw symbol [%d]: ", i); |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1202 | switch (ELFXX_ST_BIND(sym->st_info)) { |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1203 | case STB_LOCAL: VG_(printf)("LOC "); break; |
| 1204 | case STB_GLOBAL: VG_(printf)("GLO "); break; |
| 1205 | case STB_WEAK: VG_(printf)("WEA "); break; |
| 1206 | case STB_LOPROC: VG_(printf)("lop "); break; |
| 1207 | case STB_HIPROC: VG_(printf)("hip "); break; |
| 1208 | default: VG_(printf)("??? "); break; |
| 1209 | } |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1210 | switch (ELFXX_ST_TYPE(sym->st_info)) { |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1211 | case STT_NOTYPE: VG_(printf)("NOT "); break; |
| 1212 | case STT_OBJECT: VG_(printf)("OBJ "); break; |
| 1213 | case STT_FUNC: VG_(printf)("FUN "); break; |
| 1214 | case STT_SECTION: VG_(printf)("SEC "); break; |
| 1215 | case STT_FILE: VG_(printf)("FIL "); break; |
| 1216 | case STT_LOPROC: VG_(printf)("lop "); break; |
| 1217 | case STT_HIPROC: VG_(printf)("hip "); break; |
| 1218 | default: VG_(printf)("??? "); break; |
| 1219 | } |
| 1220 | VG_(printf)( |
| 1221 | ": value %p, size %d, name %s\n", |
| 1222 | sym_addr, sym->st_size, |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1223 | ( sym->st_name ? sym_name : (Char*)"NONAME" ) ); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1224 | } |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1225 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1226 | // Record interesting symbols in our symtab. |
| 1227 | if ( is_interesting_symbol(si, sym, sym_name, sym_addr) ) { |
| 1228 | vg_assert(sym->st_name != 0); |
| 1229 | vg_assert(sym_name[0] != 0); |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1230 | name = ML_(addStr) ( si, sym_name, -1 ); |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1231 | vg_assert(name != NULL); |
| 1232 | |
| 1233 | /* |
| 1234 | * Is this symbol a magic valgrind-intercept symbol? If so, |
| 1235 | * hand this off to the redir module. |
| 1236 | * |
| 1237 | * Note: this function can change the symbol name just added to |
| 1238 | * the string table. Importantly, it never makes it bigger. |
| 1239 | */ |
| 1240 | if (do_intercepts) { |
| 1241 | VG_(maybe_redir_or_notify)( name, sym_addr ); |
| 1242 | } |
| 1243 | |
| 1244 | risym.addr = sym_addr; |
| 1245 | risym.size = sym->st_size; |
| 1246 | risym.name = name; |
| 1247 | addSym ( si, &risym ); |
rjwalsh | e4e779d | 2004-04-16 23:02:29 +0000 | [diff] [blame] | 1248 | } |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1249 | } |
| 1250 | } |
| 1251 | |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1252 | /* |
| 1253 | * This routine for calculating the CRC for a separate debug file |
| 1254 | * is GPLed code borrowed from binutils. |
| 1255 | */ |
| 1256 | static UInt |
| 1257 | calc_gnu_debuglink_crc32(UInt crc, const UChar *buf, Int len) |
| 1258 | { |
| 1259 | static const UInt crc32_table[256] = |
| 1260 | { |
| 1261 | 0x00000000, 0x77073096, 0xee0e612c, 0x990951ba, 0x076dc419, |
| 1262 | 0x706af48f, 0xe963a535, 0x9e6495a3, 0x0edb8832, 0x79dcb8a4, |
| 1263 | 0xe0d5e91e, 0x97d2d988, 0x09b64c2b, 0x7eb17cbd, 0xe7b82d07, |
| 1264 | 0x90bf1d91, 0x1db71064, 0x6ab020f2, 0xf3b97148, 0x84be41de, |
| 1265 | 0x1adad47d, 0x6ddde4eb, 0xf4d4b551, 0x83d385c7, 0x136c9856, |
| 1266 | 0x646ba8c0, 0xfd62f97a, 0x8a65c9ec, 0x14015c4f, 0x63066cd9, |
| 1267 | 0xfa0f3d63, 0x8d080df5, 0x3b6e20c8, 0x4c69105e, 0xd56041e4, |
| 1268 | 0xa2677172, 0x3c03e4d1, 0x4b04d447, 0xd20d85fd, 0xa50ab56b, |
| 1269 | 0x35b5a8fa, 0x42b2986c, 0xdbbbc9d6, 0xacbcf940, 0x32d86ce3, |
| 1270 | 0x45df5c75, 0xdcd60dcf, 0xabd13d59, 0x26d930ac, 0x51de003a, |
| 1271 | 0xc8d75180, 0xbfd06116, 0x21b4f4b5, 0x56b3c423, 0xcfba9599, |
| 1272 | 0xb8bda50f, 0x2802b89e, 0x5f058808, 0xc60cd9b2, 0xb10be924, |
| 1273 | 0x2f6f7c87, 0x58684c11, 0xc1611dab, 0xb6662d3d, 0x76dc4190, |
| 1274 | 0x01db7106, 0x98d220bc, 0xefd5102a, 0x71b18589, 0x06b6b51f, |
| 1275 | 0x9fbfe4a5, 0xe8b8d433, 0x7807c9a2, 0x0f00f934, 0x9609a88e, |
| 1276 | 0xe10e9818, 0x7f6a0dbb, 0x086d3d2d, 0x91646c97, 0xe6635c01, |
| 1277 | 0x6b6b51f4, 0x1c6c6162, 0x856530d8, 0xf262004e, 0x6c0695ed, |
| 1278 | 0x1b01a57b, 0x8208f4c1, 0xf50fc457, 0x65b0d9c6, 0x12b7e950, |
| 1279 | 0x8bbeb8ea, 0xfcb9887c, 0x62dd1ddf, 0x15da2d49, 0x8cd37cf3, |
| 1280 | 0xfbd44c65, 0x4db26158, 0x3ab551ce, 0xa3bc0074, 0xd4bb30e2, |
| 1281 | 0x4adfa541, 0x3dd895d7, 0xa4d1c46d, 0xd3d6f4fb, 0x4369e96a, |
| 1282 | 0x346ed9fc, 0xad678846, 0xda60b8d0, 0x44042d73, 0x33031de5, |
| 1283 | 0xaa0a4c5f, 0xdd0d7cc9, 0x5005713c, 0x270241aa, 0xbe0b1010, |
| 1284 | 0xc90c2086, 0x5768b525, 0x206f85b3, 0xb966d409, 0xce61e49f, |
| 1285 | 0x5edef90e, 0x29d9c998, 0xb0d09822, 0xc7d7a8b4, 0x59b33d17, |
| 1286 | 0x2eb40d81, 0xb7bd5c3b, 0xc0ba6cad, 0xedb88320, 0x9abfb3b6, |
| 1287 | 0x03b6e20c, 0x74b1d29a, 0xead54739, 0x9dd277af, 0x04db2615, |
| 1288 | 0x73dc1683, 0xe3630b12, 0x94643b84, 0x0d6d6a3e, 0x7a6a5aa8, |
| 1289 | 0xe40ecf0b, 0x9309ff9d, 0x0a00ae27, 0x7d079eb1, 0xf00f9344, |
| 1290 | 0x8708a3d2, 0x1e01f268, 0x6906c2fe, 0xf762575d, 0x806567cb, |
| 1291 | 0x196c3671, 0x6e6b06e7, 0xfed41b76, 0x89d32be0, 0x10da7a5a, |
| 1292 | 0x67dd4acc, 0xf9b9df6f, 0x8ebeeff9, 0x17b7be43, 0x60b08ed5, |
| 1293 | 0xd6d6a3e8, 0xa1d1937e, 0x38d8c2c4, 0x4fdff252, 0xd1bb67f1, |
| 1294 | 0xa6bc5767, 0x3fb506dd, 0x48b2364b, 0xd80d2bda, 0xaf0a1b4c, |
| 1295 | 0x36034af6, 0x41047a60, 0xdf60efc3, 0xa867df55, 0x316e8eef, |
| 1296 | 0x4669be79, 0xcb61b38c, 0xbc66831a, 0x256fd2a0, 0x5268e236, |
| 1297 | 0xcc0c7795, 0xbb0b4703, 0x220216b9, 0x5505262f, 0xc5ba3bbe, |
| 1298 | 0xb2bd0b28, 0x2bb45a92, 0x5cb36a04, 0xc2d7ffa7, 0xb5d0cf31, |
| 1299 | 0x2cd99e8b, 0x5bdeae1d, 0x9b64c2b0, 0xec63f226, 0x756aa39c, |
| 1300 | 0x026d930a, 0x9c0906a9, 0xeb0e363f, 0x72076785, 0x05005713, |
| 1301 | 0x95bf4a82, 0xe2b87a14, 0x7bb12bae, 0x0cb61b38, 0x92d28e9b, |
| 1302 | 0xe5d5be0d, 0x7cdcefb7, 0x0bdbdf21, 0x86d3d2d4, 0xf1d4e242, |
| 1303 | 0x68ddb3f8, 0x1fda836e, 0x81be16cd, 0xf6b9265b, 0x6fb077e1, |
| 1304 | 0x18b74777, 0x88085ae6, 0xff0f6a70, 0x66063bca, 0x11010b5c, |
| 1305 | 0x8f659eff, 0xf862ae69, 0x616bffd3, 0x166ccf45, 0xa00ae278, |
| 1306 | 0xd70dd2ee, 0x4e048354, 0x3903b3c2, 0xa7672661, 0xd06016f7, |
| 1307 | 0x4969474d, 0x3e6e77db, 0xaed16a4a, 0xd9d65adc, 0x40df0b66, |
| 1308 | 0x37d83bf0, 0xa9bcae53, 0xdebb9ec5, 0x47b2cf7f, 0x30b5ffe9, |
| 1309 | 0xbdbdf21c, 0xcabac28a, 0x53b39330, 0x24b4a3a6, 0xbad03605, |
| 1310 | 0xcdd70693, 0x54de5729, 0x23d967bf, 0xb3667a2e, 0xc4614ab8, |
| 1311 | 0x5d681b02, 0x2a6f2b94, 0xb40bbe37, 0xc30c8ea1, 0x5a05df1b, |
| 1312 | 0x2d02ef8d |
| 1313 | }; |
| 1314 | const UChar *end; |
| 1315 | |
| 1316 | crc = ~crc & 0xffffffff; |
| 1317 | for (end = buf + len; buf < end; ++ buf) |
| 1318 | crc = crc32_table[(crc ^ *buf) & 0xff] ^ (crc >> 8); |
| 1319 | return ~crc & 0xffffffff;; |
| 1320 | } |
| 1321 | |
| 1322 | /* |
| 1323 | * Try and open a separate debug file, ignoring any where the CRC does |
| 1324 | * not match the value from the main object file. |
| 1325 | */ |
| 1326 | static |
| 1327 | Addr open_debug_file( Char* name, UInt crc, UInt* size ) |
| 1328 | { |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1329 | SysRes fd, sres; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1330 | struct vki_stat stat_buf; |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1331 | UInt calccrc; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1332 | |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 1333 | fd = VG_(open)(name, VKI_O_RDONLY, 0); |
| 1334 | if (fd.isError) |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1335 | return 0; |
| 1336 | |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 1337 | if (VG_(fstat)(fd.val, &stat_buf) != 0) { |
| 1338 | VG_(close)(fd.val); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1339 | return 0; |
| 1340 | } |
| 1341 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1342 | if (VG_(clo_verbosity) > 1) |
njn | 1fd5eb2 | 2005-03-13 05:43:23 +0000 | [diff] [blame] | 1343 | VG_(message)(Vg_DebugMsg, "Reading debug info from %s...", name); |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1344 | |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1345 | *size = stat_buf.st_size; |
| 1346 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1347 | sres = VG_(am_mmap_file_float_valgrind) |
| 1348 | ( *size, VKI_PROT_READ, fd.val, 0 ); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1349 | |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 1350 | VG_(close)(fd.val); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1351 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1352 | if (sres.isError) |
| 1353 | return 0; |
| 1354 | |
| 1355 | calccrc = calc_gnu_debuglink_crc32(0, (UChar*)sres.val, *size); |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1356 | if (calccrc != crc) { |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1357 | SysRes res = VG_(am_munmap_valgrind)(sres.val, *size); |
| 1358 | vg_assert(!res.isError); |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1359 | if (VG_(clo_verbosity) > 1) |
njn | 1fd5eb2 | 2005-03-13 05:43:23 +0000 | [diff] [blame] | 1360 | VG_(message)(Vg_DebugMsg, "... CRC mismatch (computed %08x wanted %08x)", calccrc, crc); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1361 | return 0; |
| 1362 | } |
| 1363 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1364 | return sres.val; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1365 | } |
| 1366 | |
| 1367 | /* |
nethercote | b1e1ad4 | 2004-08-03 23:44:12 +0000 | [diff] [blame] | 1368 | * Try to find a separate debug file for a given object file. |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1369 | */ |
| 1370 | static |
| 1371 | Addr find_debug_file( Char* objpath, Char* debugname, UInt crc, UInt* size ) |
| 1372 | { |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1373 | Char *objdir = VG_(arena_strdup)(VG_AR_SYMTAB, objpath); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1374 | Char *objdirptr; |
| 1375 | Char *debugpath; |
| 1376 | Addr addr = 0; |
| 1377 | |
| 1378 | if ((objdirptr = VG_(strrchr)(objdir, '/')) != NULL) |
| 1379 | *objdirptr = '\0'; |
| 1380 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1381 | debugpath = VG_(arena_malloc)(VG_AR_SYMTAB, VG_(strlen)(objdir) + VG_(strlen)(debugname) + 16); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1382 | |
| 1383 | VG_(sprintf)(debugpath, "%s/%s", objdir, debugname); |
| 1384 | |
| 1385 | if ((addr = open_debug_file(debugpath, crc, size)) == 0) { |
| 1386 | VG_(sprintf)(debugpath, "%s/.debug/%s", objdir, debugname); |
| 1387 | if ((addr = open_debug_file(debugpath, crc, size)) == 0) { |
| 1388 | VG_(sprintf)(debugpath, "/usr/lib/debug%s/%s", objdir, debugname); |
| 1389 | addr = open_debug_file(debugpath, crc, size); |
| 1390 | } |
| 1391 | } |
| 1392 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1393 | VG_(arena_free)(VG_AR_SYMTAB, debugpath); |
| 1394 | VG_(arena_free)(VG_AR_SYMTAB, objdir); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1395 | |
| 1396 | return addr; |
| 1397 | } |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1398 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1399 | /* Read the symbols from the object/exe specified by the SegInfo into |
| 1400 | the tables within the supplied SegInfo. */ |
| 1401 | static |
njn | 695c16e | 2005-03-27 03:40:28 +0000 | [diff] [blame] | 1402 | Bool read_lib_symbols ( SegInfo* si ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1403 | { |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1404 | Bool res; |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1405 | ElfXX_Ehdr* ehdr; /* The ELF header */ |
| 1406 | ElfXX_Shdr* shdr; /* The section table */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1407 | UChar* sh_strtab; /* The section table's string table */ |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1408 | SysRes fd, sres; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1409 | Int i; |
| 1410 | Bool ok; |
| 1411 | Addr oimage; |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 1412 | UInt n_oimage; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1413 | Addr dimage = 0; |
| 1414 | UInt n_dimage = 0; |
sewardj | b358620 | 2002-05-09 17:38:13 +0000 | [diff] [blame] | 1415 | struct vki_stat stat_buf; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1416 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1417 | oimage = (Addr)NULL; |
| 1418 | if (VG_(clo_verbosity) > 1) |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1419 | VG_(message)(Vg_DebugMsg, "Reading syms from %s (%p)", |
| 1420 | si->filename, si->start ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1421 | |
| 1422 | /* mmap the object image aboard, so that we can read symbols and |
| 1423 | line number info out of it. It will be munmapped immediately |
| 1424 | thereafter; it is only aboard transiently. */ |
| 1425 | |
tom | 6c93c4f | 2005-08-05 07:46:32 +0000 | [diff] [blame] | 1426 | fd = VG_(stat)(si->filename, &stat_buf); |
| 1427 | if (fd.isError) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1428 | ML_(symerr)("Can't stat .so/.exe (to determine its size)?!"); |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1429 | return False; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1430 | } |
| 1431 | n_oimage = stat_buf.st_size; |
| 1432 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1433 | fd = VG_(open)(si->filename, VKI_O_RDONLY, 0); |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 1434 | if (fd.isError) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1435 | ML_(symerr)("Can't open .so/.exe to read symbols?!"); |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1436 | return False; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1437 | } |
| 1438 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1439 | sres = VG_(am_mmap_file_float_valgrind) |
| 1440 | ( n_oimage, VKI_PROT_READ, fd.val, 0 ); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1441 | |
sewardj | 9264559 | 2005-07-23 09:18:34 +0000 | [diff] [blame] | 1442 | VG_(close)(fd.val); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1443 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1444 | if (sres.isError) { |
njn | 1fd5eb2 | 2005-03-13 05:43:23 +0000 | [diff] [blame] | 1445 | VG_(message)(Vg_UserMsg, "warning: mmap failed on %s", si->filename ); |
| 1446 | VG_(message)(Vg_UserMsg, " no symbols or debug info loaded" ); |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1447 | return False; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1448 | } |
| 1449 | |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1450 | oimage = sres.val; |
| 1451 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1452 | /* Ok, the object image is safely in oimage[0 .. n_oimage-1]. |
| 1453 | Now verify that it is a valid ELF .so or executable image. |
| 1454 | */ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1455 | res = False; |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1456 | ok = (n_oimage >= sizeof(ElfXX_Ehdr)); |
| 1457 | ehdr = (ElfXX_Ehdr*)oimage; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1458 | |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1459 | if (ok) |
sewardj | 0d1a896 | 2005-09-28 01:23:25 +0000 | [diff] [blame] | 1460 | ok &= is_elf_object_file(ehdr); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1461 | |
| 1462 | if (!ok) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1463 | ML_(symerr)("Invalid ELF header, or missing stringtab/sectiontab."); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1464 | goto out; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1465 | } |
| 1466 | |
| 1467 | /* Walk the LOAD headers in the phdr and update the SegInfo to |
| 1468 | include them all, so that this segment also contains data and |
| 1469 | bss memory. Also computes correct symbol offset value for this |
| 1470 | ELF file. */ |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1471 | if (ehdr->e_phoff + ehdr->e_phnum*sizeof(ElfXX_Phdr) > n_oimage) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1472 | ML_(symerr)("ELF program header is beyond image end?!"); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1473 | goto out; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1474 | } |
| 1475 | { |
| 1476 | Bool offset_set = False; |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1477 | ElfXX_Addr prev_addr = 0; |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1478 | Addr baseaddr = 0; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1479 | |
| 1480 | si->offset = 0; |
| 1481 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1482 | vg_assert(si->soname == NULL); |
| 1483 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1484 | for (i = 0; i < ehdr->e_phnum; i++) { |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1485 | ElfXX_Phdr *o_phdr; |
| 1486 | ElfXX_Addr mapped, mapped_end; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1487 | |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1488 | o_phdr = &((ElfXX_Phdr *)(oimage + ehdr->e_phoff))[i]; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1489 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1490 | // Try to get the soname. |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1491 | if (o_phdr->p_type == PT_DYNAMIC && si->soname == NULL) { |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1492 | const ElfXX_Dyn *dyn = (const ElfXX_Dyn *)(oimage + o_phdr->p_offset); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1493 | Int stroff = -1; |
| 1494 | Char *strtab = NULL; |
| 1495 | Int j; |
| 1496 | |
| 1497 | for(j = 0; dyn[j].d_tag != DT_NULL; j++) { |
| 1498 | switch(dyn[j].d_tag) { |
| 1499 | case DT_SONAME: |
| 1500 | stroff = dyn[j].d_un.d_val; |
| 1501 | break; |
| 1502 | |
| 1503 | case DT_STRTAB: |
| 1504 | strtab = (Char *)oimage + dyn[j].d_un.d_ptr - baseaddr; |
| 1505 | break; |
| 1506 | } |
| 1507 | } |
| 1508 | |
| 1509 | if (stroff != -1 && strtab != 0) { |
| 1510 | TRACE_SYMTAB("soname=%s\n", strtab+stroff); |
| 1511 | si->soname = VG_(arena_strdup)(VG_AR_SYMTAB, strtab+stroff); |
| 1512 | } |
| 1513 | } |
| 1514 | |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1515 | if (o_phdr->p_type != PT_LOAD) |
| 1516 | continue; |
| 1517 | |
| 1518 | if (!offset_set) { |
| 1519 | offset_set = True; |
| 1520 | si->offset = si->start - o_phdr->p_vaddr; |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1521 | baseaddr = o_phdr->p_vaddr; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1522 | } |
| 1523 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1524 | // Make sure the Phdrs are in order |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1525 | if (o_phdr->p_vaddr < prev_addr) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1526 | ML_(symerr)("ELF Phdrs are out of order!?"); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1527 | goto out; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1528 | } |
| 1529 | prev_addr = o_phdr->p_vaddr; |
| 1530 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1531 | // Get the data and bss start/size if appropriate |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1532 | mapped = o_phdr->p_vaddr + si->offset; |
| 1533 | mapped_end = mapped + o_phdr->p_memsz; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1534 | if (si->data_start == 0 && |
| 1535 | (o_phdr->p_flags & (PF_R|PF_W|PF_X)) == (PF_R|PF_W)) { |
| 1536 | si->data_start = mapped; |
| 1537 | si->data_size = o_phdr->p_filesz; |
| 1538 | si->bss_start = mapped + o_phdr->p_filesz; |
| 1539 | if (o_phdr->p_memsz > o_phdr->p_filesz) |
| 1540 | si->bss_size = o_phdr->p_memsz - o_phdr->p_filesz; |
| 1541 | else |
| 1542 | si->bss_size = 0; |
| 1543 | } |
tom | 7e8c7ca | 2005-11-16 00:09:15 +0000 | [diff] [blame] | 1544 | |
| 1545 | mapped = mapped & ~(VKI_PAGE_SIZE-1); |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1546 | mapped_end = (mapped_end + VKI_PAGE_SIZE - 1) & ~(VKI_PAGE_SIZE-1); |
| 1547 | |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1548 | if (VG_(needs).data_syms && |
| 1549 | (mapped >= si->start && mapped <= (si->start+si->size)) && |
| 1550 | (mapped_end > (si->start+si->size))) { |
| 1551 | UInt newsz = mapped_end - si->start; |
| 1552 | if (newsz > si->size) { |
| 1553 | if (0) |
| 1554 | VG_(printf)("extending mapping %p..%p %d -> ..%p %d\n", |
| 1555 | si->start, si->start+si->size, si->size, |
| 1556 | si->start+newsz, newsz); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1557 | |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1558 | si->size = newsz; |
| 1559 | } |
| 1560 | } |
| 1561 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1562 | } |
| 1563 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1564 | TRACE_SYMTAB("shoff = %d, shnum = %d, size = %d, n_vg_oimage = %d\n", |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1565 | ehdr->e_shoff, ehdr->e_shnum, sizeof(ElfXX_Shdr), n_oimage ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1566 | |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1567 | if (ehdr->e_shoff + ehdr->e_shnum*sizeof(ElfXX_Shdr) > n_oimage) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1568 | ML_(symerr)("ELF section header is beyond image end?!"); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1569 | goto out; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1570 | } |
| 1571 | |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1572 | shdr = (ElfXX_Shdr*)(oimage + ehdr->e_shoff); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1573 | sh_strtab = (UChar*)(oimage + shdr[ehdr->e_shstrndx].sh_offset); |
| 1574 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1575 | /* Find interesting sections, read the symbol table(s), read any debug |
| 1576 | information */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1577 | { |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1578 | /* Pointers to start of sections */ |
| 1579 | UChar* o_strtab = NULL; /* .strtab */ |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1580 | ElfXX_Sym* o_symtab = NULL; /* .symtab */ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1581 | UChar* o_dynstr = NULL; /* .dynstr */ |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1582 | ElfXX_Sym* o_dynsym = NULL; /* .dynsym */ |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1583 | Char* debuglink = NULL; /* .gnu_debuglink */ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1584 | UChar* stab = NULL; /* .stab (stabs) */ |
| 1585 | UChar* stabstr = NULL; /* .stabstr (stabs) */ |
| 1586 | UChar* debug_line = NULL; /* .debug_line (dwarf2) */ |
sewardj | 022bf2f | 2005-06-14 21:51:14 +0000 | [diff] [blame] | 1587 | UChar* debug_info = NULL; /* .debug_info (dwarf2) */ |
| 1588 | UChar* debug_abbv = NULL; /* .debug_abbrev (dwarf2) */ |
| 1589 | UChar* debug_str = NULL; /* .debug_str (dwarf2) */ |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1590 | UChar* dwarf1d = NULL; /* .debug (dwarf1) */ |
| 1591 | UChar* dwarf1l = NULL; /* .line (dwarf1) */ |
sewardj | 5c638c2 | 2005-04-30 07:55:58 +0000 | [diff] [blame] | 1592 | UChar* ehframe = NULL; /* .eh_frame (dwarf2) */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1593 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1594 | /* Section sizes, in bytes */ |
| 1595 | UInt o_strtab_sz = 0; |
| 1596 | UInt o_symtab_sz = 0; |
| 1597 | UInt o_dynstr_sz = 0; |
| 1598 | UInt o_dynsym_sz = 0; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1599 | UInt debuglink_sz = 0; |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1600 | UInt stab_sz = 0; |
| 1601 | UInt stabstr_sz = 0; |
| 1602 | UInt debug_line_sz = 0; |
sewardj | 022bf2f | 2005-06-14 21:51:14 +0000 | [diff] [blame] | 1603 | UInt debug_info_sz = 0; |
| 1604 | UInt debug_abbv_sz = 0; |
| 1605 | UInt debug_str_sz = 0; |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1606 | UInt dwarf1d_sz = 0; |
| 1607 | UInt dwarf1l_sz = 0; |
sewardj | 5c638c2 | 2005-04-30 07:55:58 +0000 | [diff] [blame] | 1608 | UInt ehframe_sz = 0; |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1609 | |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1610 | /* Section virtual addresses */ |
| 1611 | Addr dummy_addr = 0; |
| 1612 | Addr ehframe_addr = 0; |
| 1613 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1614 | /* Find all interesting sections */ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1615 | for (i = 0; i < ehdr->e_shnum; i++) { |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1616 | # define FIND(sec_name, sec_data, sec_size, sec_addr, in_exec, type) \ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1617 | if (0 == VG_(strcmp)(sec_name, sh_strtab + shdr[i].sh_name)) { \ |
sewardj | 88b7add | 2005-10-21 02:37:40 +0000 | [diff] [blame] | 1618 | Bool nobits; \ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1619 | if (0 != sec_data) \ |
| 1620 | VG_(core_panic)("repeated section!\n"); \ |
nethercote | fd1ea4c | 2003-12-01 11:54:09 +0000 | [diff] [blame] | 1621 | if (in_exec) \ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1622 | sec_data = (type)(si->offset + shdr[i].sh_addr); \ |
nethercote | fd1ea4c | 2003-12-01 11:54:09 +0000 | [diff] [blame] | 1623 | else \ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1624 | sec_data = (type)(oimage + shdr[i].sh_offset); \ |
nethercote | fd1ea4c | 2003-12-01 11:54:09 +0000 | [diff] [blame] | 1625 | sec_size = shdr[i].sh_size; \ |
sewardj | 88b7add | 2005-10-21 02:37:40 +0000 | [diff] [blame] | 1626 | nobits = shdr[i].sh_type == SHT_NOBITS; \ |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1627 | sec_addr = si->offset + shdr[i].sh_addr; \ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1628 | TRACE_SYMTAB( "%18s: %p .. %p\n", \ |
| 1629 | sec_name, sec_data, sec_data + sec_size - 1); \ |
sewardj | 88b7add | 2005-10-21 02:37:40 +0000 | [diff] [blame] | 1630 | /* SHT_NOBITS sections have zero size in the file. */ \ |
| 1631 | if ( shdr[i].sh_offset + (nobits ? 0 : sec_size) > n_oimage ) { \ |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1632 | ML_(symerr)(" section beyond image end?!"); \ |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1633 | goto out; \ |
| 1634 | } \ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1635 | } |
| 1636 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1637 | /* Nb: must find where .got and .plt sections will be in the |
| 1638 | * executable image, not in the object image transiently loaded. */ |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1639 | FIND(".dynsym", o_dynsym, o_dynsym_sz, dummy_addr, 0, ElfXX_Sym*) |
| 1640 | else FIND(".dynstr", o_dynstr, o_dynstr_sz, dummy_addr, 0, UChar*) |
| 1641 | else FIND(".symtab", o_symtab, o_symtab_sz, dummy_addr, 0, ElfXX_Sym*) |
| 1642 | else FIND(".strtab", o_strtab, o_strtab_sz, dummy_addr, 0, UChar*) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1643 | |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1644 | else FIND(".gnu_debuglink", debuglink, debuglink_sz, dummy_addr, 0, Char*) |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1645 | |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1646 | else FIND(".stab", stab, stab_sz, dummy_addr, 0, UChar*) |
| 1647 | else FIND(".stabstr", stabstr, stabstr_sz, dummy_addr, 0, UChar*) |
sewardj | 022bf2f | 2005-06-14 21:51:14 +0000 | [diff] [blame] | 1648 | |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1649 | else FIND(".debug_line", debug_line, debug_line_sz, dummy_addr, 0, UChar*) |
sewardj | 022bf2f | 2005-06-14 21:51:14 +0000 | [diff] [blame] | 1650 | else FIND(".debug_info", debug_info, debug_info_sz, dummy_addr, 0, UChar*) |
| 1651 | else FIND(".debug_abbrev", debug_abbv, debug_abbv_sz, dummy_addr, 0, UChar*) |
| 1652 | else FIND(".debug_str", debug_str, debug_str_sz, dummy_addr, 0, UChar*) |
| 1653 | |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1654 | else FIND(".debug", dwarf1d, dwarf1d_sz, dummy_addr, 0, UChar*) |
| 1655 | else FIND(".line", dwarf1l, dwarf1l_sz, dummy_addr, 0, UChar*) |
| 1656 | else FIND(".eh_frame", ehframe, ehframe_sz, ehframe_addr, 0, UChar*) |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1657 | |
tom | 2fd3890 | 2005-05-01 15:14:01 +0000 | [diff] [blame] | 1658 | else FIND(".got", si->got_start, si->got_size, dummy_addr, 1, Addr) |
| 1659 | else FIND(".plt", si->plt_start, si->plt_size, dummy_addr, 1, Addr) |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1660 | |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1661 | # undef FIND |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1662 | } |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 1663 | |
| 1664 | /* Check some sizes */ |
| 1665 | vg_assert((o_dynsym_sz % sizeof(ElfXX_Sym)) == 0); |
| 1666 | vg_assert((o_symtab_sz % sizeof(ElfXX_Sym)) == 0); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1667 | |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1668 | /* Did we find a debuglink section? */ |
| 1669 | if (debuglink != NULL) { |
njn | 13bfd85 | 2005-06-02 03:52:53 +0000 | [diff] [blame] | 1670 | UInt crc_offset = VG_ROUNDUP(VG_(strlen)(debuglink)+1, 4); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1671 | UInt crc; |
| 1672 | |
| 1673 | vg_assert(crc_offset + sizeof(UInt) <= debuglink_sz); |
| 1674 | |
| 1675 | /* Extract the CRC from the debuglink section */ |
| 1676 | crc = *(UInt *)(debuglink + crc_offset); |
| 1677 | |
| 1678 | /* See if we can find a matching debug file */ |
| 1679 | if ((dimage = find_debug_file(si->filename, debuglink, crc, &n_dimage)) != 0) { |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1680 | ehdr = (ElfXX_Ehdr*)dimage; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1681 | |
sewardj | 0d1a896 | 2005-09-28 01:23:25 +0000 | [diff] [blame] | 1682 | if (n_dimage >= sizeof(ElfXX_Ehdr) && is_elf_object_file(ehdr)) |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1683 | { |
sewardj | 7a21c61 | 2005-02-18 09:38:08 +0000 | [diff] [blame] | 1684 | shdr = (ElfXX_Shdr*)(dimage + ehdr->e_shoff); |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1685 | sh_strtab = (UChar*)(dimage + shdr[ehdr->e_shstrndx].sh_offset); |
| 1686 | |
| 1687 | /* Find all interesting sections */ |
| 1688 | for (i = 0; i < ehdr->e_shnum; i++) { |
| 1689 | # define FIND(sec_name, sec_data, sec_size, type) \ |
| 1690 | if (0 == VG_(strcmp)(sec_name, sh_strtab + shdr[i].sh_name)) { \ |
sewardj | 88b7add | 2005-10-21 02:37:40 +0000 | [diff] [blame] | 1691 | Bool nobits; \ |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1692 | if (0 != sec_data) \ |
| 1693 | VG_(core_panic)("repeated section!\n"); \ |
| 1694 | sec_data = (type)(dimage + shdr[i].sh_offset); \ |
| 1695 | sec_size = shdr[i].sh_size; \ |
sewardj | 88b7add | 2005-10-21 02:37:40 +0000 | [diff] [blame] | 1696 | nobits = shdr[i].sh_type == SHT_NOBITS; \ |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1697 | TRACE_SYMTAB( "%18s: %p .. %p\n", \ |
| 1698 | sec_name, sec_data, sec_data + sec_size - 1); \ |
sewardj | 88b7add | 2005-10-21 02:37:40 +0000 | [diff] [blame] | 1699 | /* SHT_NOBITS sections have zero size in the file. */ \ |
| 1700 | if ( shdr[i].sh_offset + (nobits ? 0 : sec_size) > n_dimage ) { \ |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1701 | ML_(symerr)(" section beyond image end?!"); \ |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1702 | goto out; \ |
| 1703 | } \ |
| 1704 | } |
| 1705 | |
| 1706 | /* Nb: must find where .got and .plt sections will be in the |
| 1707 | * executable image, not in the object image transiently loaded. */ |
| 1708 | FIND(".stab", stab, stab_sz, UChar*) |
| 1709 | else FIND(".stabstr", stabstr, stabstr_sz, UChar*) |
| 1710 | else FIND(".debug_line", debug_line, debug_line_sz, UChar*) |
tom | e36cb5a | 2005-06-15 10:19:43 +0000 | [diff] [blame] | 1711 | else FIND(".debug_info", debug_info, debug_info_sz, UChar*) |
| 1712 | else FIND(".debug_abbrev", debug_abbv, debug_abbv_sz, UChar*) |
| 1713 | else FIND(".debug_str", debug_str, debug_str_sz, UChar*) |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1714 | else FIND(".debug", dwarf1d, dwarf1d_sz, UChar*) |
| 1715 | else FIND(".line", dwarf1l, dwarf1l_sz, UChar*) |
| 1716 | |
| 1717 | # undef FIND |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1718 | } |
| 1719 | } |
| 1720 | } |
| 1721 | } |
| 1722 | |
njn | d54e4ec | 2005-05-15 03:38:53 +0000 | [diff] [blame] | 1723 | /* Read symbols */ |
| 1724 | read_symtab(si, "symbol table", False, |
| 1725 | o_symtab, o_symtab_sz, |
| 1726 | o_strtab, o_strtab_sz); |
| 1727 | |
| 1728 | read_symtab(si, "dynamic symbol table", True, |
| 1729 | o_dynsym, o_dynsym_sz, |
| 1730 | o_dynstr, o_dynstr_sz); |
| 1731 | |
sewardj | 5c638c2 | 2005-04-30 07:55:58 +0000 | [diff] [blame] | 1732 | /* Read .eh_frame (call-frame-info) if any */ |
sewardj | 55022aa | 2005-05-03 16:05:00 +0000 | [diff] [blame] | 1733 | if (ehframe) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1734 | ML_(read_callframe_info_dwarf2) ( si, ehframe, ehframe_sz, ehframe_addr ); |
sewardj | 5c638c2 | 2005-04-30 07:55:58 +0000 | [diff] [blame] | 1735 | } |
| 1736 | |
sewardj | e7aa4ae | 2005-06-09 12:43:42 +0000 | [diff] [blame] | 1737 | /* Read the stabs and/or dwarf2 debug information, if any. It |
| 1738 | appears reading stabs stuff on amd64-linux doesn't work, so |
| 1739 | we ignore it. */ |
| 1740 | # if !defined(VGP_amd64_linux) |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1741 | if (stab && stabstr) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1742 | ML_(read_debuginfo_stabs) ( si, stab, stab_sz, |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1743 | stabstr, stabstr_sz ); |
| 1744 | } |
sewardj | e7aa4ae | 2005-06-09 12:43:42 +0000 | [diff] [blame] | 1745 | # endif |
sewardj | 1a0e39f | 2006-01-01 23:00:49 +0000 | [diff] [blame] | 1746 | /* jrs 2006-01-01: icc-8.1 has been observed to generate |
| 1747 | binaries without debug_str sections. Don't preclude |
| 1748 | debuginfo reading for that reason, but, in |
| 1749 | read_unitinfo_dwarf2, do check that debugstr is non-NULL |
| 1750 | before using it. */ |
| 1751 | if (debug_info && debug_abbv && debug_line /* && debug_str */) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1752 | ML_(read_debuginfo_dwarf2) ( si, |
sewardj | 022bf2f | 2005-06-14 21:51:14 +0000 | [diff] [blame] | 1753 | debug_info, debug_info_sz, |
| 1754 | debug_abbv, |
| 1755 | debug_line, debug_line_sz, |
| 1756 | debug_str ); |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1757 | } |
| 1758 | if (dwarf1d && dwarf1l) { |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 1759 | ML_(read_debuginfo_dwarf1) ( si, dwarf1d, dwarf1d_sz, |
jseward | 8b3131a | 2003-12-13 23:16:26 +0000 | [diff] [blame] | 1760 | dwarf1l, dwarf1l_sz ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1761 | } |
| 1762 | } |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1763 | res = True; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1764 | |
nethercote | e567e70 | 2004-07-10 17:49:17 +0000 | [diff] [blame] | 1765 | out: { |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1766 | SysRes m_res; |
thughes | c035bd9 | 2004-06-13 09:59:02 +0000 | [diff] [blame] | 1767 | /* Last, but not least, heave the image(s) back overboard. */ |
nethercote | e567e70 | 2004-07-10 17:49:17 +0000 | [diff] [blame] | 1768 | if (dimage) { |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1769 | m_res = VG_(am_munmap_valgrind) ( dimage, n_dimage ); |
| 1770 | vg_assert(!m_res.isError); |
nethercote | e567e70 | 2004-07-10 17:49:17 +0000 | [diff] [blame] | 1771 | } |
sewardj | 45f4e7c | 2005-09-27 19:20:21 +0000 | [diff] [blame] | 1772 | m_res = VG_(am_munmap_valgrind) ( oimage, n_oimage ); |
| 1773 | vg_assert(!m_res.isError); |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 1774 | return res; |
nethercote | e567e70 | 2004-07-10 17:49:17 +0000 | [diff] [blame] | 1775 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1776 | } |
| 1777 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1778 | /*------------------------------------------------------------*/ |
| 1779 | /*--- Main entry point for symbols table reading. ---*/ |
| 1780 | /*------------------------------------------------------------*/ |
| 1781 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1782 | static SegInfo* |
| 1783 | alloc_SegInfo(Addr start, SizeT size, OffT foffset, const Char* filename) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1784 | { |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1785 | SegInfo* si = VG_(arena_calloc)(VG_AR_SYMTAB, 1, sizeof(SegInfo)); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1786 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1787 | si->start = start; |
| 1788 | si->size = size; |
| 1789 | si->foffset = foffset; |
| 1790 | si->filename = VG_(arena_strdup)(VG_AR_SYMTAB, filename); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1791 | |
| 1792 | si->ref = 1; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1793 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1794 | // Everything else -- pointers, sizes, arrays -- is zeroed by calloc. |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 1795 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1796 | return si; |
| 1797 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1798 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1799 | SegInfo *VG_(read_seg_symbols) ( Addr seg_addr, SizeT seg_len, |
| 1800 | OffT seg_offset, const Char* seg_filename) |
| 1801 | { |
| 1802 | SegInfo* si = alloc_SegInfo(seg_addr, seg_len, seg_offset, seg_filename); |
sewardj | 8a77ffb | 2003-07-10 23:31:27 +0000 | [diff] [blame] | 1803 | |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1804 | if (!read_lib_symbols ( si )) { |
| 1805 | // Something went wrong (eg. bad ELF file). |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1806 | freeSegInfo( si ); |
njn | 0787fc0 | 2005-06-26 02:19:17 +0000 | [diff] [blame] | 1807 | si = NULL; |
| 1808 | |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1809 | } else { |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1810 | // Prepend si to segInfo_list |
| 1811 | si->next = segInfo_list; |
| 1812 | segInfo_list = si; |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1813 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1814 | canonicaliseSymtab ( si ); |
| 1815 | canonicaliseLoctab ( si ); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 1816 | canonicaliseScopetab ( si ); |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1817 | canonicaliseCfiSI ( si ); |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1818 | |
| 1819 | /* do redirects */ |
njn | d9109c6 | 2005-06-26 04:49:25 +0000 | [diff] [blame] | 1820 | VG_(resolve_existing_redirs_with_seginfo)( si ); |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 1821 | } |
fitzhardinge | 98abfc7 | 2003-12-16 02:05:15 +0000 | [diff] [blame] | 1822 | |
| 1823 | return si; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1824 | } |
| 1825 | |
| 1826 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1827 | /* When an munmap() call happens, check to see whether it corresponds |
| 1828 | to a segment for a .so, and if so discard the relevant SegInfo. |
| 1829 | This might not be a very clever idea from the point of view of |
| 1830 | accuracy of error messages, but we need to do it in order to |
sewardj | 18d7513 | 2002-05-16 11:06:21 +0000 | [diff] [blame] | 1831 | maintain the no-overlapping invariant. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1832 | */ |
nethercote | 928a5f7 | 2004-11-03 18:10:37 +0000 | [diff] [blame] | 1833 | static void unload_symbols ( Addr start, SizeT length ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1834 | { |
njn | b3edb1f | 2005-08-14 04:29:12 +0000 | [diff] [blame] | 1835 | SegInfo** prev_next_ptr = &segInfo_list; |
| 1836 | SegInfo* curr = segInfo_list; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1837 | |
njn | b3edb1f | 2005-08-14 04:29:12 +0000 | [diff] [blame] | 1838 | while (curr) { |
| 1839 | if (start == curr->start) { |
| 1840 | // Found it; remove from list and free it. |
| 1841 | if (VG_(clo_verbosity) > 1) |
| 1842 | VG_(message)(Vg_DebugMsg, |
| 1843 | "discard syms at %p-%p in %s due to munmap()", |
| 1844 | start, start+length, |
| 1845 | curr->filename ? curr->filename : (Char *)"???"); |
| 1846 | vg_assert(*prev_next_ptr == curr); |
| 1847 | *prev_next_ptr = curr->next; |
| 1848 | freeSegInfo(curr); |
| 1849 | return; |
| 1850 | } |
| 1851 | prev_next_ptr = &curr->next; |
| 1852 | curr = curr->next; |
njn | fa1016e | 2003-09-25 17:54:11 +0000 | [diff] [blame] | 1853 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1854 | |
njn | b3edb1f | 2005-08-14 04:29:12 +0000 | [diff] [blame] | 1855 | // Not found. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1856 | } |
| 1857 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1858 | /*------------------------------------------------------------*/ |
| 1859 | /*--- Use of symbol table & location info to create ---*/ |
| 1860 | /*--- plausible-looking stack dumps. ---*/ |
| 1861 | /*------------------------------------------------------------*/ |
| 1862 | |
| 1863 | /* Find a symbol-table index containing the specified pointer, or -1 |
| 1864 | if not found. Binary search. */ |
| 1865 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1866 | static Int search_one_symtab ( SegInfo* si, Addr ptr, |
| 1867 | Bool match_anywhere_in_fun ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1868 | { |
| 1869 | Addr a_mid_lo, a_mid_hi; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1870 | Int mid, size, |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1871 | lo = 0, |
| 1872 | hi = si->symtab_used-1; |
| 1873 | while (True) { |
| 1874 | /* current unsearched space is from lo to hi, inclusive. */ |
| 1875 | if (lo > hi) return -1; /* not found */ |
| 1876 | mid = (lo + hi) / 2; |
| 1877 | a_mid_lo = si->symtab[mid].addr; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1878 | size = ( match_anywhere_in_fun |
| 1879 | ? si->symtab[mid].size |
| 1880 | : 1); |
| 1881 | a_mid_hi = ((Addr)si->symtab[mid].addr) + size - 1; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1882 | |
| 1883 | if (ptr < a_mid_lo) { hi = mid-1; continue; } |
| 1884 | if (ptr > a_mid_hi) { lo = mid+1; continue; } |
| 1885 | vg_assert(ptr >= a_mid_lo && ptr <= a_mid_hi); |
| 1886 | return mid; |
| 1887 | } |
| 1888 | } |
| 1889 | |
| 1890 | |
sewardj | 25c7c3a | 2003-07-10 00:17:58 +0000 | [diff] [blame] | 1891 | /* SLOW (Linear search). Try and map a symbol name to an address. |
| 1892 | Since this is searching in the direction opposite to which the |
| 1893 | table is designed we have no option but to do a complete linear |
| 1894 | scan of the table. Returns NULL if not found. */ |
| 1895 | |
sewardj | b5f6f51 | 2005-03-10 23:59:00 +0000 | [diff] [blame] | 1896 | Addr VG_(reverse_search_one_symtab) ( const SegInfo* si, const Char* name ) |
sewardj | 25c7c3a | 2003-07-10 00:17:58 +0000 | [diff] [blame] | 1897 | { |
| 1898 | UInt i; |
| 1899 | for (i = 0; i < si->symtab_used; i++) { |
sewardj | c8bf5fe | 2003-07-13 00:53:22 +0000 | [diff] [blame] | 1900 | if (0) |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 1901 | VG_(printf)("%p %s\n", si->symtab[i].addr, si->symtab[i].name); |
| 1902 | if (0 == VG_(strcmp)(name, si->symtab[i].name)) |
sewardj | 25c7c3a | 2003-07-10 00:17:58 +0000 | [diff] [blame] | 1903 | return si->symtab[i].addr; |
| 1904 | } |
| 1905 | return (Addr)NULL; |
| 1906 | } |
| 1907 | |
| 1908 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1909 | /* Search all symtabs that we know about to locate ptr. If found, set |
| 1910 | *psi to the relevant SegInfo, and *symno to the symtab entry number |
| 1911 | within that. If not found, *psi is set to NULL. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1912 | static void search_all_symtabs ( Addr ptr, /*OUT*/SegInfo** psi, |
| 1913 | /*OUT*/Int* symno, |
| 1914 | Bool match_anywhere_in_fun ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1915 | { |
| 1916 | Int sno; |
| 1917 | SegInfo* si; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1918 | |
njn | 1727cc8 | 2005-06-21 23:09:45 +0000 | [diff] [blame] | 1919 | for (si = segInfo_list; si != NULL; si = si->next) { |
| 1920 | if (si->start <= ptr && ptr < si->start+si->size) { |
| 1921 | sno = search_one_symtab ( si, ptr, match_anywhere_in_fun ); |
| 1922 | if (sno == -1) goto not_found; |
| 1923 | *symno = sno; |
| 1924 | *psi = si; |
njn | 1727cc8 | 2005-06-21 23:09:45 +0000 | [diff] [blame] | 1925 | return; |
| 1926 | } |
| 1927 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1928 | not_found: |
| 1929 | *psi = NULL; |
| 1930 | } |
| 1931 | |
| 1932 | |
| 1933 | /* Find a location-table index containing the specified pointer, or -1 |
| 1934 | if not found. Binary search. */ |
| 1935 | |
| 1936 | static Int search_one_loctab ( SegInfo* si, Addr ptr ) |
| 1937 | { |
| 1938 | Addr a_mid_lo, a_mid_hi; |
| 1939 | Int mid, |
| 1940 | lo = 0, |
| 1941 | hi = si->loctab_used-1; |
| 1942 | while (True) { |
| 1943 | /* current unsearched space is from lo to hi, inclusive. */ |
| 1944 | if (lo > hi) return -1; /* not found */ |
| 1945 | mid = (lo + hi) / 2; |
| 1946 | a_mid_lo = si->loctab[mid].addr; |
| 1947 | a_mid_hi = ((Addr)si->loctab[mid].addr) + si->loctab[mid].size - 1; |
| 1948 | |
| 1949 | if (ptr < a_mid_lo) { hi = mid-1; continue; } |
| 1950 | if (ptr > a_mid_hi) { lo = mid+1; continue; } |
| 1951 | vg_assert(ptr >= a_mid_lo && ptr <= a_mid_hi); |
| 1952 | return mid; |
| 1953 | } |
| 1954 | } |
| 1955 | |
| 1956 | |
| 1957 | /* Search all loctabs that we know about to locate ptr. If found, set |
| 1958 | *psi to the relevant SegInfo, and *locno to the loctab entry number |
| 1959 | within that. If not found, *psi is set to NULL. |
| 1960 | */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1961 | static void search_all_loctabs ( Addr ptr, /*OUT*/SegInfo** psi, |
| 1962 | /*OUT*/Int* locno ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1963 | { |
| 1964 | Int lno; |
| 1965 | SegInfo* si; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 1966 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 1967 | for (si = segInfo_list; si != NULL; si = si->next) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 1968 | if (si->start <= ptr && ptr < si->start+si->size) { |
| 1969 | lno = search_one_loctab ( si, ptr ); |
| 1970 | if (lno == -1) goto not_found; |
| 1971 | *locno = lno; |
| 1972 | *psi = si; |
| 1973 | return; |
| 1974 | } |
| 1975 | } |
| 1976 | not_found: |
| 1977 | *psi = NULL; |
| 1978 | } |
| 1979 | |
| 1980 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 1981 | /* Find a scope-table index containing the specified pointer, or -1 |
| 1982 | if not found. Binary search. */ |
| 1983 | |
| 1984 | static Int search_one_scopetab ( SegInfo* si, Addr ptr ) |
| 1985 | { |
| 1986 | Addr a_mid_lo, a_mid_hi; |
| 1987 | Int mid, |
| 1988 | lo = 0, |
| 1989 | hi = si->scopetab_used-1; |
| 1990 | while (True) { |
| 1991 | /* current unsearched space is from lo to hi, inclusive. */ |
| 1992 | if (lo > hi) return -1; /* not found */ |
| 1993 | mid = (lo + hi) / 2; |
| 1994 | a_mid_lo = si->scopetab[mid].addr; |
| 1995 | a_mid_hi = ((Addr)si->scopetab[mid].addr) + si->scopetab[mid].size - 1; |
| 1996 | |
| 1997 | if (ptr < a_mid_lo) { hi = mid-1; continue; } |
| 1998 | if (ptr > a_mid_hi) { lo = mid+1; continue; } |
| 1999 | vg_assert(ptr >= a_mid_lo && ptr <= a_mid_hi); |
| 2000 | return mid; |
| 2001 | } |
| 2002 | } |
| 2003 | |
| 2004 | |
| 2005 | /* Search all scopetabs that we know about to locate ptr. If found, set |
| 2006 | *psi to the relevant SegInfo, and *locno to the scopetab entry number |
| 2007 | within that. If not found, *psi is set to NULL. |
| 2008 | */ |
| 2009 | static void search_all_scopetabs ( Addr ptr, |
| 2010 | /*OUT*/SegInfo** psi, |
| 2011 | /*OUT*/Int* scopeno ) |
| 2012 | { |
| 2013 | Int scno; |
| 2014 | SegInfo* si; |
| 2015 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 2016 | for (si = segInfo_list; si != NULL; si = si->next) { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2017 | if (si->start <= ptr && ptr < si->start+si->size) { |
| 2018 | scno = search_one_scopetab ( si, ptr ); |
| 2019 | if (scno == -1) goto not_found; |
| 2020 | *scopeno = scno; |
| 2021 | *psi = si; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2022 | return; |
| 2023 | } |
| 2024 | } |
| 2025 | not_found: |
| 2026 | *psi = NULL; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2027 | } |
| 2028 | |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 2029 | |
| 2030 | /* Find a CFI-table index containing the specified pointer, or -1 |
| 2031 | if not found. Binary search. */ |
| 2032 | |
| 2033 | static Int search_one_cfitab ( SegInfo* si, Addr ptr ) |
| 2034 | { |
| 2035 | Addr a_mid_lo, a_mid_hi; |
| 2036 | Int mid, size, |
| 2037 | lo = 0, |
| 2038 | hi = si->cfisi_used-1; |
| 2039 | while (True) { |
| 2040 | /* current unsearched space is from lo to hi, inclusive. */ |
| 2041 | if (lo > hi) return -1; /* not found */ |
| 2042 | mid = (lo + hi) / 2; |
| 2043 | a_mid_lo = si->cfisi[mid].base; |
| 2044 | size = si->cfisi[mid].len; |
| 2045 | a_mid_hi = a_mid_lo + size - 1; |
| 2046 | vg_assert(a_mid_hi >= a_mid_lo); |
| 2047 | if (ptr < a_mid_lo) { hi = mid-1; continue; } |
| 2048 | if (ptr > a_mid_hi) { lo = mid+1; continue; } |
| 2049 | vg_assert(ptr >= a_mid_lo && ptr <= a_mid_hi); |
| 2050 | return mid; |
| 2051 | } |
| 2052 | } |
| 2053 | |
| 2054 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2055 | /* The whole point of this whole big deal: map a code address to a |
| 2056 | plausible symbol name. Returns False if no idea; otherwise True. |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2057 | Caller supplies buf and nbuf. If demangle is False, don't do |
njn | 695c16e | 2005-03-27 03:40:28 +0000 | [diff] [blame] | 2058 | demangling, regardless of VG_(clo_demangle) -- probably because the |
| 2059 | call has come from VG_(get_fnname_nodemangle)(). */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2060 | static |
| 2061 | Bool get_fnname ( Bool demangle, Addr a, Char* buf, Int nbuf, |
sewardj | 1771e17 | 2002-11-13 22:06:35 +0000 | [diff] [blame] | 2062 | Bool match_anywhere_in_fun, Bool show_offset) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2063 | { |
| 2064 | SegInfo* si; |
| 2065 | Int sno; |
sewardj | 1771e17 | 2002-11-13 22:06:35 +0000 | [diff] [blame] | 2066 | Int offset; |
| 2067 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2068 | search_all_symtabs ( a, &si, &sno, match_anywhere_in_fun ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2069 | if (si == NULL) |
| 2070 | return False; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2071 | if (demangle) { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2072 | VG_(demangle) ( si->symtab[sno].name, buf, nbuf ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2073 | } else { |
njn | be73f43 | 2005-03-26 21:34:45 +0000 | [diff] [blame] | 2074 | VG_(strncpy_safely) ( buf, si->symtab[sno].name, nbuf ); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2075 | } |
sewardj | 1771e17 | 2002-11-13 22:06:35 +0000 | [diff] [blame] | 2076 | |
| 2077 | offset = a - si->symtab[sno].addr; |
| 2078 | if (show_offset && offset != 0) { |
| 2079 | Char buf2[12]; |
| 2080 | Char* symend = buf + VG_(strlen)(buf); |
| 2081 | Char* end = buf + nbuf; |
| 2082 | Int len; |
| 2083 | |
| 2084 | len = VG_(sprintf)(buf2, "%c%d", |
| 2085 | offset < 0 ? '-' : '+', |
| 2086 | offset < 0 ? -offset : offset); |
sewardj | 05bcdcb | 2003-05-18 10:05:38 +0000 | [diff] [blame] | 2087 | vg_assert(len < (Int)sizeof(buf2)); |
sewardj | 1771e17 | 2002-11-13 22:06:35 +0000 | [diff] [blame] | 2088 | |
| 2089 | if (len < (end - symend)) { |
| 2090 | Char *cp = buf2; |
| 2091 | VG_(memcpy)(symend, cp, len+1); |
| 2092 | } |
| 2093 | } |
| 2094 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2095 | return True; |
| 2096 | } |
| 2097 | |
nethercote | 7cc9c23 | 2004-01-21 15:08:04 +0000 | [diff] [blame] | 2098 | /* This is available to tools... always demangle C++ names, |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2099 | match anywhere in function, but don't show offsets. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2100 | Bool VG_(get_fnname) ( Addr a, Char* buf, Int nbuf ) |
| 2101 | { |
| 2102 | return get_fnname ( /*demangle*/True, a, buf, nbuf, |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2103 | /*match_anywhere_in_fun*/True, |
| 2104 | /*show offset?*/False ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2105 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2106 | |
nethercote | 7cc9c23 | 2004-01-21 15:08:04 +0000 | [diff] [blame] | 2107 | /* This is available to tools... always demangle C++ names, |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2108 | match anywhere in function, and show offset if nonzero. */ |
| 2109 | Bool VG_(get_fnname_w_offset) ( Addr a, Char* buf, Int nbuf ) |
| 2110 | { |
| 2111 | return get_fnname ( /*demangle*/True, a, buf, nbuf, |
| 2112 | /*match_anywhere_in_fun*/True, |
| 2113 | /*show offset?*/True ); |
| 2114 | } |
| 2115 | |
nethercote | 7cc9c23 | 2004-01-21 15:08:04 +0000 | [diff] [blame] | 2116 | /* This is available to tools... always demangle C++ names, |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2117 | only succeed if 'a' matches first instruction of function, |
| 2118 | and don't show offsets. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2119 | Bool VG_(get_fnname_if_entry) ( Addr a, Char* buf, Int nbuf ) |
| 2120 | { |
| 2121 | return get_fnname ( /*demangle*/True, a, buf, nbuf, |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2122 | /*match_anywhere_in_fun*/False, |
| 2123 | /*show offset?*/False ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2124 | } |
| 2125 | |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2126 | /* This is only available to core... don't demangle C++ names, |
| 2127 | match anywhere in function, and don't show offsets. */ |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2128 | Bool VG_(get_fnname_nodemangle) ( Addr a, Char* buf, Int nbuf ) |
| 2129 | { |
| 2130 | return get_fnname ( /*demangle*/False, a, buf, nbuf, |
sewardj | 6e008cb | 2002-12-15 13:11:39 +0000 | [diff] [blame] | 2131 | /*match_anywhere_in_fun*/True, |
| 2132 | /*show offset?*/False ); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2133 | } |
| 2134 | |
| 2135 | /* Map a code address to the name of a shared object file or the executable. |
| 2136 | Returns False if no idea; otherwise True. Doesn't require debug info. |
| 2137 | Caller supplies buf and nbuf. */ |
| 2138 | Bool VG_(get_objname) ( Addr a, Char* buf, Int nbuf ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2139 | { |
| 2140 | SegInfo* si; |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2141 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 2142 | for (si = segInfo_list; si != NULL; si = si->next) { |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2143 | if (si->start <= a && a < si->start+si->size) { |
| 2144 | VG_(strncpy_safely)(buf, si->filename, nbuf); |
| 2145 | return True; |
| 2146 | } |
| 2147 | } |
| 2148 | return False; |
| 2149 | } |
| 2150 | |
njn | b877d49 | 2003-01-28 20:40:57 +0000 | [diff] [blame] | 2151 | /* Map a code address to its SegInfo. Returns NULL if not found. Doesn't |
| 2152 | require debug info. */ |
njn | 3c45f5b | 2005-07-06 13:19:11 +0000 | [diff] [blame] | 2153 | SegInfo* VG_(find_seginfo) ( Addr a ) |
njn | b877d49 | 2003-01-28 20:40:57 +0000 | [diff] [blame] | 2154 | { |
| 2155 | SegInfo* si; |
| 2156 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 2157 | for (si = segInfo_list; si != NULL; si = si->next) { |
njn | b877d49 | 2003-01-28 20:40:57 +0000 | [diff] [blame] | 2158 | if (si->start <= a && a < si->start+si->size) { |
| 2159 | return si; |
| 2160 | } |
| 2161 | } |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 2162 | return NULL; |
njn | b877d49 | 2003-01-28 20:40:57 +0000 | [diff] [blame] | 2163 | } |
| 2164 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2165 | |
| 2166 | /* Map a code address to a filename. Returns True if successful. */ |
| 2167 | Bool VG_(get_filename)( Addr a, Char* filename, Int n_filename ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2168 | { |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2169 | SegInfo* si; |
| 2170 | Int locno; |
| 2171 | search_all_loctabs ( a, &si, &locno ); |
| 2172 | if (si == NULL) |
| 2173 | return False; |
njn | be73f43 | 2005-03-26 21:34:45 +0000 | [diff] [blame] | 2174 | VG_(strncpy_safely)(filename, si->loctab[locno].filename, n_filename); |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2175 | return True; |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2176 | } |
| 2177 | |
njn25 | e49d8e7 | 2002-09-23 09:36:25 +0000 | [diff] [blame] | 2178 | /* Map a code address to a line number. Returns True if successful. */ |
| 2179 | Bool VG_(get_linenum)( Addr a, UInt* lineno ) |
| 2180 | { |
| 2181 | SegInfo* si; |
| 2182 | Int locno; |
| 2183 | search_all_loctabs ( a, &si, &locno ); |
| 2184 | if (si == NULL) |
| 2185 | return False; |
| 2186 | *lineno = si->loctab[locno].lineno; |
| 2187 | |
| 2188 | return True; |
| 2189 | } |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2190 | |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2191 | /* Map a code address to a filename/line number/dir name info. |
| 2192 | See prototype for detailed description of behaviour. |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2193 | */ |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2194 | Bool VG_(get_filename_linenum) ( Addr a, |
| 2195 | /*OUT*/Char* filename, Int n_filename, |
| 2196 | /*OUT*/Char* dirname, Int n_dirname, |
| 2197 | /*OUT*/Bool* dirname_available, |
| 2198 | /*OUT*/UInt* lineno ) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2199 | { |
| 2200 | SegInfo* si; |
| 2201 | Int locno; |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2202 | |
| 2203 | vg_assert( (dirname == NULL && dirname_available == NULL) |
| 2204 | || |
| 2205 | (dirname != NULL && dirname_available != NULL) ); |
| 2206 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2207 | search_all_loctabs ( a, &si, &locno ); |
| 2208 | if (si == NULL) |
| 2209 | return False; |
njn | be73f43 | 2005-03-26 21:34:45 +0000 | [diff] [blame] | 2210 | VG_(strncpy_safely)(filename, si->loctab[locno].filename, n_filename); |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2211 | *lineno = si->loctab[locno].lineno; |
njn | 4f9c934 | 2002-04-29 16:03:24 +0000 | [diff] [blame] | 2212 | |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2213 | if (dirname) { |
| 2214 | /* caller wants directory info too .. */ |
| 2215 | vg_assert(n_dirname > 0); |
| 2216 | if (si->loctab[locno].dirname) { |
| 2217 | /* .. and we have some */ |
| 2218 | *dirname_available = True; |
| 2219 | VG_(strncpy_safely)(dirname, si->loctab[locno].dirname, |
| 2220 | n_dirname); |
| 2221 | } else { |
| 2222 | /* .. but we don't have any */ |
| 2223 | *dirname_available = False; |
| 2224 | *dirname = 0; |
| 2225 | } |
| 2226 | } |
| 2227 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2228 | return True; |
| 2229 | } |
| 2230 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2231 | #ifndef TEST |
| 2232 | |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2233 | // Note that R_STACK_PTR and R_FRAME_PTR are used again further below, |
| 2234 | // which is why they get a named constant. |
| 2235 | static Addr regaddr_from_tst(Int regno, ThreadArchState *arch) |
| 2236 | { |
| 2237 | #if defined(VGA_x86) |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2238 | /* This is the Intel register encoding -- integer regs. */ |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2239 | # define R_STACK_PTR 4 |
| 2240 | # define R_FRAME_PTR 5 |
| 2241 | switch (regno) { |
| 2242 | case 0: return (Addr) & arch->vex.guest_EAX; |
| 2243 | case 1: return (Addr) & arch->vex.guest_ECX; |
| 2244 | case 2: return (Addr) & arch->vex.guest_EDX; |
| 2245 | case 3: return (Addr) & arch->vex.guest_EBX; |
| 2246 | case R_STACK_PTR: return (Addr) & arch->vex.guest_ESP; |
| 2247 | case R_FRAME_PTR: return (Addr) & arch->vex.guest_EBP; |
| 2248 | case 6: return (Addr) & arch->vex.guest_ESI; |
| 2249 | case 7: return (Addr) & arch->vex.guest_EDI; |
| 2250 | default: return 0; |
| 2251 | } |
| 2252 | #elif defined(VGA_amd64) |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2253 | /* This is the AMD64 register encoding -- integer regs. */ |
tom | 7b99856 | 2005-05-16 07:31:57 +0000 | [diff] [blame] | 2254 | # define R_STACK_PTR 7 |
| 2255 | # define R_FRAME_PTR 6 |
| 2256 | switch (regno) { |
| 2257 | case 0: return (Addr) & arch->vex.guest_RAX; |
| 2258 | case 1: return (Addr) & arch->vex.guest_RDX; |
| 2259 | case 2: return (Addr) & arch->vex.guest_RCX; |
| 2260 | case 3: return (Addr) & arch->vex.guest_RBX; |
| 2261 | case 4: return (Addr) & arch->vex.guest_RSI; |
| 2262 | case 5: return (Addr) & arch->vex.guest_RDI; |
| 2263 | case R_FRAME_PTR: return (Addr) & arch->vex.guest_RBP; |
| 2264 | case R_STACK_PTR: return (Addr) & arch->vex.guest_RSP; |
| 2265 | case 8: return (Addr) & arch->vex.guest_R8; |
| 2266 | case 9: return (Addr) & arch->vex.guest_R9; |
| 2267 | case 10: return (Addr) & arch->vex.guest_R10; |
| 2268 | case 11: return (Addr) & arch->vex.guest_R11; |
| 2269 | case 12: return (Addr) & arch->vex.guest_R12; |
| 2270 | case 13: return (Addr) & arch->vex.guest_R13; |
| 2271 | case 14: return (Addr) & arch->vex.guest_R14; |
| 2272 | case 15: return (Addr) & arch->vex.guest_R15; |
| 2273 | default: return 0; |
| 2274 | } |
sewardj | 2c48c7b | 2005-11-29 13:05:56 +0000 | [diff] [blame] | 2275 | #elif defined(VGA_ppc32) || defined(VGA_ppc64) |
| 2276 | /* This is the PPC register encoding -- integer regs. */ |
cerion | 85665ca | 2005-06-20 15:51:07 +0000 | [diff] [blame] | 2277 | # define R_STACK_PTR 1 |
| 2278 | # define R_FRAME_PTR 1 |
| 2279 | switch (regno) { |
| 2280 | case 0: return (Addr) & arch->vex.guest_GPR0; |
| 2281 | case R_STACK_PTR: return (Addr) & arch->vex.guest_GPR1; |
| 2282 | case 2: return (Addr) & arch->vex.guest_GPR2; |
| 2283 | case 3: return (Addr) & arch->vex.guest_GPR3; |
| 2284 | case 4: return (Addr) & arch->vex.guest_GPR4; |
| 2285 | case 5: return (Addr) & arch->vex.guest_GPR5; |
| 2286 | case 6: return (Addr) & arch->vex.guest_GPR6; |
| 2287 | case 7: return (Addr) & arch->vex.guest_GPR7; |
| 2288 | case 8: return (Addr) & arch->vex.guest_GPR8; |
| 2289 | case 9: return (Addr) & arch->vex.guest_GPR9; |
| 2290 | case 10: return (Addr) & arch->vex.guest_GPR10; |
| 2291 | case 11: return (Addr) & arch->vex.guest_GPR11; |
| 2292 | case 12: return (Addr) & arch->vex.guest_GPR12; |
| 2293 | case 13: return (Addr) & arch->vex.guest_GPR13; |
| 2294 | case 14: return (Addr) & arch->vex.guest_GPR14; |
| 2295 | case 15: return (Addr) & arch->vex.guest_GPR15; |
| 2296 | case 16: return (Addr) & arch->vex.guest_GPR16; |
| 2297 | case 17: return (Addr) & arch->vex.guest_GPR17; |
| 2298 | case 18: return (Addr) & arch->vex.guest_GPR18; |
| 2299 | case 19: return (Addr) & arch->vex.guest_GPR19; |
| 2300 | case 20: return (Addr) & arch->vex.guest_GPR20; |
| 2301 | case 21: return (Addr) & arch->vex.guest_GPR21; |
| 2302 | case 22: return (Addr) & arch->vex.guest_GPR22; |
| 2303 | case 23: return (Addr) & arch->vex.guest_GPR23; |
| 2304 | case 24: return (Addr) & arch->vex.guest_GPR24; |
| 2305 | case 25: return (Addr) & arch->vex.guest_GPR25; |
| 2306 | case 26: return (Addr) & arch->vex.guest_GPR26; |
| 2307 | case 27: return (Addr) & arch->vex.guest_GPR27; |
| 2308 | case 28: return (Addr) & arch->vex.guest_GPR28; |
| 2309 | case 29: return (Addr) & arch->vex.guest_GPR29; |
| 2310 | case 30: return (Addr) & arch->vex.guest_GPR30; |
| 2311 | case 31: return (Addr) & arch->vex.guest_GPR31; |
| 2312 | default: return 0; |
| 2313 | } |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2314 | #else |
| 2315 | # error Unknown platform |
| 2316 | #endif |
| 2317 | } |
| 2318 | |
| 2319 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2320 | /* return a pointer to a register (now for 5 other impossible things |
| 2321 | before breakfast) */ |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2322 | static Addr regaddr(ThreadId tid, Int regno) |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2323 | { |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2324 | Addr ret = regaddr_from_tst(regno, &VG_(threads)[tid].arch); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2325 | |
| 2326 | if (ret == 0) { |
njn | 252ed91 | 2005-05-15 03:30:56 +0000 | [diff] [blame] | 2327 | Char buf[100]; |
| 2328 | VG_(describe_IP)( VG_(get_IP)(tid), buf, 100 ); |
| 2329 | VG_(printf)("mysterious register %d used at %s\n", regno, buf); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2330 | } |
| 2331 | |
| 2332 | return ret; |
| 2333 | } |
| 2334 | |
| 2335 | /* Get a list of all variables in scope, working out from the directly |
| 2336 | current one */ |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 2337 | Variable* ML_(get_scope_variables)(ThreadId tid) |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2338 | { |
| 2339 | static const Bool debug = False; |
| 2340 | Variable *list, *end; |
| 2341 | Addr eip; |
| 2342 | SegInfo *si; |
| 2343 | Int scopeidx; |
| 2344 | Scope *scope; |
| 2345 | Int distance; |
| 2346 | static const Int maxsyms = 1000; |
| 2347 | Int nsyms = maxsyms; |
| 2348 | |
| 2349 | list = end = NULL; |
| 2350 | |
njn | 6751613 | 2005-03-22 04:02:43 +0000 | [diff] [blame] | 2351 | eip = VG_(get_IP)(tid); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2352 | |
| 2353 | search_all_scopetabs(eip, &si, &scopeidx); |
| 2354 | |
| 2355 | if (debug) |
| 2356 | VG_(printf)("eip=%p si=%p (%s; offset=%p) scopeidx=%d\n", |
| 2357 | eip, si, si ? si->filename : (Char *)"???", |
| 2358 | si ? si->offset : 0x99999, scopeidx); |
| 2359 | |
| 2360 | if (si == NULL) |
| 2361 | return NULL; /* nothing in scope (should use global scope at least) */ |
| 2362 | |
| 2363 | if (debug) { |
| 2364 | ScopeRange *sr = &si->scopetab[scopeidx]; |
| 2365 | Char file[100]; |
| 2366 | Int line; |
| 2367 | |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2368 | if (!VG_(get_filename_linenum)(sr->addr, file, sizeof(file), |
| 2369 | NULL, 0, NULL, &line)) |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2370 | file[0] = 0; |
| 2371 | |
| 2372 | VG_(printf)("found scope range %p: eip=%p (%s:%d) size=%d scope=%p\n", |
| 2373 | sr, sr->addr, file, line, sr->size, sr->scope); |
| 2374 | } |
| 2375 | |
| 2376 | distance = 0; |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2377 | for (scope = si->scopetab[scopeidx].scope; |
| 2378 | scope != NULL; |
| 2379 | scope = scope->outer, distance++) { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2380 | UInt i; |
| 2381 | |
| 2382 | for(i = 0; i < scope->nsyms; i++) { |
| 2383 | Sym *sym = &scope->syms[i]; |
| 2384 | Variable *v; |
| 2385 | |
| 2386 | if (nsyms-- == 0) { |
| 2387 | VG_(printf)("max %d syms reached\n", maxsyms); |
| 2388 | return list; |
| 2389 | } |
| 2390 | |
| 2391 | v = VG_(arena_malloc)(VG_AR_SYMTAB, sizeof(*v)); |
| 2392 | |
| 2393 | v->next = NULL; |
| 2394 | v->distance = distance; |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 2395 | v->type = ML_(st_basetype)(sym->type, False); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2396 | v->name = VG_(arena_strdup)(VG_AR_SYMTAB, sym->name); |
| 2397 | v->container = NULL; |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 2398 | v->size = ML_(st_sizeof)(sym->type); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2399 | |
| 2400 | if (debug && 0) |
mueller | 5ed88f2 | 2004-01-06 16:02:29 +0000 | [diff] [blame] | 2401 | VG_(printf)("sym->name=%s sym->kind=%d offset=%d\n", sym->name, sym->kind, sym->u.offset); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2402 | switch(sym->kind) { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2403 | |
| 2404 | case SyGlobal: |
| 2405 | case SyStatic: |
mueller | 5ed88f2 | 2004-01-06 16:02:29 +0000 | [diff] [blame] | 2406 | if (sym->u.addr == 0) { |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2407 | /* XXX lookup value */ |
| 2408 | } |
mueller | 5ed88f2 | 2004-01-06 16:02:29 +0000 | [diff] [blame] | 2409 | v->valuep = sym->u.addr; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2410 | break; |
| 2411 | |
| 2412 | case SyReg: |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2413 | v->valuep = regaddr(tid, sym->u.regno); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2414 | break; |
| 2415 | |
| 2416 | case SyEBPrel: |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2417 | case SyESPrel: { |
| 2418 | Addr reg = *(Addr*)regaddr(tid, sym->kind == SyESPrel |
| 2419 | ? R_STACK_PTR : R_FRAME_PTR); |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2420 | if (debug) |
mueller | 5ed88f2 | 2004-01-06 16:02:29 +0000 | [diff] [blame] | 2421 | VG_(printf)("reg=%p+%d=%p\n", reg, sym->u.offset, reg+sym->u.offset); |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2422 | v->valuep = reg + sym->u.offset; |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2423 | break; |
njn | 6b2b96a | 2005-05-16 00:01:04 +0000 | [diff] [blame] | 2424 | } |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2425 | |
| 2426 | case SyType: |
| 2427 | VG_(core_panic)("unexpected typedef in scope"); |
| 2428 | } |
| 2429 | |
| 2430 | if (v->valuep == 0) { |
| 2431 | /* not interesting or useful */ |
| 2432 | VG_(arena_free)(VG_AR_SYMTAB, v); |
| 2433 | continue; |
| 2434 | } |
| 2435 | |
| 2436 | /* append to end of list */ |
| 2437 | if (list == NULL) |
| 2438 | list = end = v; |
| 2439 | else { |
| 2440 | end->next = v; |
| 2441 | end = v; |
| 2442 | } |
| 2443 | } |
| 2444 | } |
| 2445 | |
| 2446 | return list; |
| 2447 | } |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2448 | |
| 2449 | # undef R_STACK_PTR |
| 2450 | # undef R_FRAME_PTR |
| 2451 | |
jsgf | cb1d1c0 | 2003-10-14 21:55:10 +0000 | [diff] [blame] | 2452 | #endif /* TEST */ |
| 2453 | |
njn | 6c84655 | 2003-09-16 07:41:43 +0000 | [diff] [blame] | 2454 | /* Print into buf info on code address, function name and filename */ |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2455 | |
| 2456 | static Int putStr ( Int n, Int n_buf, Char* buf, Char* str ) |
| 2457 | { |
| 2458 | for (; n < n_buf-1 && *str != 0; n++,str++) |
| 2459 | buf[n] = *str; |
| 2460 | buf[n] = '\0'; |
| 2461 | return n; |
| 2462 | } |
| 2463 | static Int putStrEsc ( Int n, Int n_buf, Char* buf, Char* str ) |
| 2464 | { |
| 2465 | Char alt[2]; |
| 2466 | for (; *str != 0; str++) { |
| 2467 | switch (*str) { |
| 2468 | case '&': n = putStr( n, n_buf, buf, "&"); break; |
| 2469 | case '<': n = putStr( n, n_buf, buf, "<"); break; |
| 2470 | case '>': n = putStr( n, n_buf, buf, ">"); break; |
| 2471 | default: alt[0] = *str; |
| 2472 | alt[1] = 0; |
| 2473 | n = putStr( n, n_buf, buf, alt ); |
| 2474 | break; |
| 2475 | } |
| 2476 | } |
| 2477 | return n; |
| 2478 | } |
| 2479 | |
njn | d01fef7 | 2005-03-25 23:35:48 +0000 | [diff] [blame] | 2480 | Char* VG_(describe_IP)(Addr eip, Char* buf, Int n_buf) |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2481 | { |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2482 | # define APPEND(_str) \ |
| 2483 | n = putStr(n, n_buf, buf, _str); |
| 2484 | # define APPEND_ESC(_str) \ |
| 2485 | n = putStrEsc(n, n_buf, buf, _str); |
njn | 83f9e79 | 2005-06-11 05:04:09 +0000 | [diff] [blame] | 2486 | # define BUF_LEN 4096 |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2487 | |
nethercote | 80f7678 | 2003-11-13 22:34:00 +0000 | [diff] [blame] | 2488 | UInt lineno; |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2489 | UChar ibuf[50]; |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2490 | Int n = 0; |
njn | 83f9e79 | 2005-06-11 05:04:09 +0000 | [diff] [blame] | 2491 | static UChar buf_fn[BUF_LEN]; |
| 2492 | static UChar buf_obj[BUF_LEN]; |
| 2493 | static UChar buf_srcloc[BUF_LEN]; |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2494 | static UChar buf_dirname[BUF_LEN]; |
| 2495 | Bool know_dirinfo = False; |
njn | 83f9e79 | 2005-06-11 05:04:09 +0000 | [diff] [blame] | 2496 | Bool know_fnname = VG_(get_fnname) (eip, buf_fn, BUF_LEN); |
| 2497 | Bool know_objname = VG_(get_objname)(eip, buf_obj, BUF_LEN); |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2498 | Bool know_srcloc = VG_(get_filename_linenum)( |
| 2499 | eip, |
| 2500 | buf_srcloc, BUF_LEN, |
| 2501 | buf_dirname, BUF_LEN, &know_dirinfo, |
| 2502 | &lineno |
| 2503 | ); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2504 | if (VG_(clo_xml)) { |
| 2505 | |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2506 | Bool human_readable = True; |
| 2507 | HChar* maybe_newline = human_readable ? "\n " : ""; |
| 2508 | HChar* maybe_newline2 = human_readable ? "\n " : ""; |
| 2509 | |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2510 | /* Print in XML format, dumping in as much info as we know. */ |
| 2511 | APPEND("<frame>"); |
| 2512 | VG_(sprintf)(ibuf,"<ip>0x%llx</ip>", (ULong)eip); |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2513 | APPEND(maybe_newline); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2514 | APPEND(ibuf); |
| 2515 | if (know_objname) { |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2516 | APPEND(maybe_newline); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2517 | APPEND("<obj>"); |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2518 | APPEND_ESC(buf_obj); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2519 | APPEND("</obj>"); |
| 2520 | } |
| 2521 | if (know_fnname) { |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2522 | APPEND(maybe_newline); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2523 | APPEND("<fn>"); |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2524 | APPEND_ESC(buf_fn); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2525 | APPEND("</fn>"); |
| 2526 | } |
| 2527 | if (know_srcloc) { |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2528 | if (know_dirinfo) { |
| 2529 | APPEND(maybe_newline); |
| 2530 | APPEND("<dir>"); |
| 2531 | APPEND(buf_dirname); |
| 2532 | APPEND("</dir>"); |
| 2533 | } |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2534 | APPEND(maybe_newline); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2535 | APPEND("<file>"); |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2536 | APPEND_ESC(buf_srcloc); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2537 | APPEND("</file>"); |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2538 | APPEND(maybe_newline); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2539 | APPEND("<line>"); |
| 2540 | VG_(sprintf)(ibuf,"%d",lineno); |
| 2541 | APPEND(ibuf); |
| 2542 | APPEND("</line>"); |
| 2543 | } |
sewardj | 8665d8e | 2005-06-01 17:35:23 +0000 | [diff] [blame] | 2544 | APPEND(maybe_newline2); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2545 | APPEND("</frame>"); |
| 2546 | |
| 2547 | } else { |
| 2548 | |
| 2549 | /* Print for humans to read */ |
| 2550 | VG_(sprintf)(ibuf,"0x%llx: ", (ULong)eip); |
| 2551 | APPEND(ibuf); |
| 2552 | if (know_fnname) { |
| 2553 | APPEND(buf_fn); |
| 2554 | if (!know_srcloc && know_objname) { |
| 2555 | APPEND(" (in "); |
| 2556 | APPEND(buf_obj); |
| 2557 | APPEND(")"); |
| 2558 | } |
| 2559 | } else if (know_objname && !know_srcloc) { |
| 2560 | APPEND("(within "); |
njn | 6c84655 | 2003-09-16 07:41:43 +0000 | [diff] [blame] | 2561 | APPEND(buf_obj); |
| 2562 | APPEND(")"); |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2563 | } else { |
| 2564 | APPEND("???"); |
njn | 6c84655 | 2003-09-16 07:41:43 +0000 | [diff] [blame] | 2565 | } |
sewardj | 71bc3cb | 2005-05-19 00:25:45 +0000 | [diff] [blame] | 2566 | if (know_srcloc) { |
| 2567 | APPEND(" ("); |
| 2568 | APPEND(buf_srcloc); |
| 2569 | APPEND(":"); |
| 2570 | VG_(sprintf)(ibuf,"%d",lineno); |
| 2571 | APPEND(ibuf); |
| 2572 | APPEND(")"); |
| 2573 | } |
| 2574 | |
njn | 6c84655 | 2003-09-16 07:41:43 +0000 | [diff] [blame] | 2575 | } |
| 2576 | return buf; |
| 2577 | |
sewardj | 948d761 | 2005-06-09 23:58:36 +0000 | [diff] [blame] | 2578 | # undef APPEND |
| 2579 | # undef APPEND_ESC |
sewardj | 7cee6f9 | 2005-06-13 17:39:06 +0000 | [diff] [blame] | 2580 | # undef BUF_LEN |
njn | 6c84655 | 2003-09-16 07:41:43 +0000 | [diff] [blame] | 2581 | } |
| 2582 | |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2583 | /* Returns True if OK. If not OK, *{ip,sp,fp}P are not changed. */ |
sewardj | 1d3cee2 | 2005-11-14 15:10:12 +0000 | [diff] [blame] | 2584 | /* NOTE: this function may rearrange the order of entries in the |
| 2585 | SegInfo list. */ |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2586 | Bool VG_(use_CFI_info) ( /*MOD*/Addr* ipP, |
| 2587 | /*MOD*/Addr* spP, |
| 2588 | /*MOD*/Addr* fpP, |
| 2589 | Addr min_accessible, |
| 2590 | Addr max_accessible ) |
| 2591 | { |
| 2592 | Int i; |
| 2593 | SegInfo* si; |
| 2594 | CfiSI* cfisi = NULL; |
| 2595 | Addr cfa, ipHere, spHere, fpHere, ipPrev, spPrev, fpPrev; |
| 2596 | |
sewardj | 1d3cee2 | 2005-11-14 15:10:12 +0000 | [diff] [blame] | 2597 | static UInt n_search = 0; |
| 2598 | static UInt n_steps = 0; |
| 2599 | n_search++; |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 2600 | |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2601 | if (0) VG_(printf)("search for %p\n", *ipP); |
| 2602 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 2603 | for (si = segInfo_list; si != NULL; si = si->next) { |
sewardj | 1d3cee2 | 2005-11-14 15:10:12 +0000 | [diff] [blame] | 2604 | n_steps++; |
| 2605 | |
sewardj | bf60375 | 2005-05-02 00:36:27 +0000 | [diff] [blame] | 2606 | /* Use the per-SegInfo summary address ranges to skip |
| 2607 | inapplicable SegInfos quickly. */ |
| 2608 | if (si->cfisi_used == 0) |
| 2609 | continue; |
| 2610 | if (*ipP < si->cfisi_minaddr || *ipP > si->cfisi_maxaddr) |
| 2611 | continue; |
| 2612 | |
sewardj | 3a1c7db | 2005-05-02 09:43:44 +0000 | [diff] [blame] | 2613 | i = search_one_cfitab( si, *ipP ); |
| 2614 | if (i != -1) { |
| 2615 | vg_assert(i >= 0 && i < si->cfisi_used); |
| 2616 | cfisi = &si->cfisi[i]; |
| 2617 | break; |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2618 | } |
| 2619 | } |
| 2620 | |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2621 | if (cfisi == NULL) |
| 2622 | return False; |
| 2623 | |
sewardj | 1d3cee2 | 2005-11-14 15:10:12 +0000 | [diff] [blame] | 2624 | if (0 && ((n_search & 0xFFFFF) == 0)) |
| 2625 | VG_(printf)("%u %u\n", n_search, n_steps); |
| 2626 | |
| 2627 | /* Start of performance-enhancing hack: once every 16 (chosen |
| 2628 | hackily after profiling) successful searchs, move the found |
| 2629 | SegInfo one step closer to the start of the list. This makes |
| 2630 | future searches cheaper. For starting konqueror on amd64, this |
| 2631 | in fact reduces the total amount of searching done by the above |
| 2632 | find-the-right-SegInfo loop by more than a factor of 20. */ |
| 2633 | if ((n_search & 0xF) == 0) { |
| 2634 | /* Move si one step closer to the start of the list. */ |
| 2635 | SegInfo* si0 = segInfo_list; |
| 2636 | SegInfo* si1 = NULL; |
| 2637 | SegInfo* si2 = NULL; |
| 2638 | SegInfo* tmp; |
| 2639 | while (True) { |
| 2640 | if (si0 == NULL) break; |
| 2641 | if (si0 == si) break; |
| 2642 | si2 = si1; |
| 2643 | si1 = si0; |
| 2644 | si0 = si0->next; |
| 2645 | } |
| 2646 | if (si0 == si && si0 != NULL && si1 != NULL && si2 != NULL) { |
| 2647 | /* si0 points to si, si1 to its predecessor, and si2 to si1's |
| 2648 | predecessor. Swap si0 and si1, that is, move si0 one step |
| 2649 | closer to the start of the list. */ |
| 2650 | tmp = si0->next; |
| 2651 | si2->next = si0; |
| 2652 | si0->next = si1; |
| 2653 | si1->next = tmp; |
| 2654 | } |
| 2655 | } |
| 2656 | /* End of performance-enhancing hack. */ |
| 2657 | |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2658 | if (0) { |
| 2659 | VG_(printf)("found cfisi: "); |
sewardj | 7eb7c58 | 2005-06-23 01:02:53 +0000 | [diff] [blame] | 2660 | ML_(ppCfiSI)(cfisi); |
sewardj | 3516553 | 2005-04-30 18:47:48 +0000 | [diff] [blame] | 2661 | } |
| 2662 | |
| 2663 | ipPrev = spPrev = fpPrev = 0; |
| 2664 | |
| 2665 | ipHere = *ipP; |
| 2666 | spHere = *spP; |
| 2667 | fpHere = *fpP; |
| 2668 | |
| 2669 | cfa = cfisi->cfa_off + (cfisi->cfa_sprel ? spHere : fpHere); |
| 2670 | |
| 2671 | # define COMPUTE(_prev, _here, _how, _off) \ |
| 2672 | do { \ |
| 2673 | switch (_how) { \ |
| 2674 | case CFIR_UNKNOWN: \ |
| 2675 | return False; \ |
| 2676 | case CFIR_SAME: \ |
| 2677 | _prev = _here; break; \ |
| 2678 | case CFIR_MEMCFAREL: { \ |
| 2679 | Addr a = cfa + (Word)_off; \ |
| 2680 | if (a < min_accessible \ |
| 2681 | || a+sizeof(Addr) > max_accessible) \ |
| 2682 | return False; \ |
| 2683 | _prev = *(Addr*)a; \ |
| 2684 | break; \ |
| 2685 | } \ |
| 2686 | case CFIR_CFAREL: \ |
| 2687 | _prev = cfa + (Word)_off; \ |
| 2688 | break; \ |
| 2689 | } \ |
| 2690 | } while (0) |
| 2691 | |
| 2692 | COMPUTE(ipPrev, ipHere, cfisi->ra_how, cfisi->ra_off); |
| 2693 | COMPUTE(spPrev, spHere, cfisi->sp_how, cfisi->sp_off); |
| 2694 | COMPUTE(fpPrev, fpHere, cfisi->fp_how, cfisi->fp_off); |
| 2695 | |
| 2696 | # undef COMPUTE |
| 2697 | |
| 2698 | *ipP = ipPrev; |
| 2699 | *spP = spPrev; |
| 2700 | *fpP = fpPrev; |
| 2701 | return True; |
| 2702 | } |
| 2703 | |
| 2704 | |
sewardj | 25c7c3a | 2003-07-10 00:17:58 +0000 | [diff] [blame] | 2705 | /*------------------------------------------------------------*/ |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2706 | /*--- SegInfo accessor functions ---*/ |
| 2707 | /*------------------------------------------------------------*/ |
| 2708 | |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2709 | const SegInfo* VG_(next_seginfo)(const SegInfo* si) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2710 | { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2711 | if (si == NULL) |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 2712 | return segInfo_list; |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2713 | return si->next; |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2714 | } |
| 2715 | |
njn | d9e5fd7 | 2005-06-25 19:51:33 +0000 | [diff] [blame] | 2716 | Addr VG_(seginfo_start)(const SegInfo* si) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2717 | { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2718 | return si->start; |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2719 | } |
| 2720 | |
njn | d9e5fd7 | 2005-06-25 19:51:33 +0000 | [diff] [blame] | 2721 | SizeT VG_(seginfo_size)(const SegInfo* si) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2722 | { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2723 | return si->size; |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2724 | } |
| 2725 | |
njn | 4f612c2 | 2005-06-25 20:22:43 +0000 | [diff] [blame] | 2726 | const UChar* VG_(seginfo_soname)(const SegInfo* si) |
| 2727 | { |
| 2728 | return si->soname; |
| 2729 | } |
| 2730 | |
njn | d9e5fd7 | 2005-06-25 19:51:33 +0000 | [diff] [blame] | 2731 | const UChar* VG_(seginfo_filename)(const SegInfo* si) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2732 | { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2733 | return si->filename; |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2734 | } |
| 2735 | |
njn | d9e5fd7 | 2005-06-25 19:51:33 +0000 | [diff] [blame] | 2736 | ULong VG_(seginfo_sym_offset)(const SegInfo* si) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2737 | { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2738 | return si->offset; |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2739 | } |
| 2740 | |
njn | d9e5fd7 | 2005-06-25 19:51:33 +0000 | [diff] [blame] | 2741 | VgSectKind VG_(seginfo_sect_kind)(Addr a) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2742 | { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2743 | SegInfo* si; |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2744 | VgSectKind ret = Vg_SectUnknown; |
| 2745 | |
njn | 16eeb4e | 2005-06-16 03:56:58 +0000 | [diff] [blame] | 2746 | for(si = segInfo_list; si != NULL; si = si->next) { |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2747 | if (a >= si->start && a < (si->start + si->size)) { |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2748 | if (0) |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2749 | VG_(printf)("addr=%p si=%p %s got=%p %d plt=%p %d data=%p %d bss=%p %d\n", |
| 2750 | a, si, si->filename, |
| 2751 | si->got_start, si->got_size, |
| 2752 | si->plt_start, si->plt_size, |
| 2753 | si->data_start, si->data_size, |
| 2754 | si->bss_start, si->bss_size); |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2755 | ret = Vg_SectText; |
| 2756 | |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2757 | if (a >= si->data_start && a < (si->data_start + si->data_size)) |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 2758 | ret = Vg_SectData; |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2759 | else if (a >= si->bss_start && a < (si->bss_start + si->bss_size)) |
sewardj | 8fe15a3 | 2002-10-20 19:29:21 +0000 | [diff] [blame] | 2760 | ret = Vg_SectBSS; |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2761 | else if (a >= si->plt_start && a < (si->plt_start + si->plt_size)) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2762 | ret = Vg_SectPLT; |
njn | 36ef6ba | 2005-05-14 18:42:26 +0000 | [diff] [blame] | 2763 | else if (a >= si->got_start && a < (si->got_start + si->got_size)) |
sewardj | 4710438 | 2002-10-20 18:35:48 +0000 | [diff] [blame] | 2764 | ret = Vg_SectGOT; |
| 2765 | } |
| 2766 | } |
| 2767 | |
| 2768 | return ret; |
| 2769 | } |
| 2770 | |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2771 | /*--------------------------------------------------------------------*/ |
njn | ea27e46 | 2005-05-31 02:38:09 +0000 | [diff] [blame] | 2772 | /*--- end ---*/ |
sewardj | de4a1d0 | 2002-03-22 01:27:54 +0000 | [diff] [blame] | 2773 | /*--------------------------------------------------------------------*/ |