2 * Generate hash tables for Wine debugger symbols
4 * Copyright (C) 1993, Eric Youngdale.
5 * 2004-2005, Eric Pouech.
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
22 #define NONAMELESSUNION
23 #define NONAMELESSSTRUCT
31 #include "wine/debug.h"
33 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
35 static BOOL symbol_get_debug_start(const struct dbg_type* func, ULONG64* start)
38 char buffer[sizeof(TI_FINDCHILDREN_PARAMS) + 256 * sizeof(DWORD)];
39 TI_FINDCHILDREN_PARAMS* fcp = (TI_FINDCHILDREN_PARAMS*)buffer;
41 struct dbg_type child;
43 if (!func->id) return FALSE; /* native dbghelp not always fills the info field */
45 if (!types_get_info(func, TI_GET_CHILDRENCOUNT, &count)) return FALSE;
49 fcp->Count = min(count, 256);
50 if (types_get_info(func, TI_FINDCHILDREN, fcp))
52 for (i = 0; i < min(fcp->Count, count); i++)
54 child.module = func->module;
55 child.id = fcp->ChildId[i];
56 types_get_info(&child, TI_GET_SYMTAG, &tag);
57 if (tag != SymTagFuncDebugStart) continue;
58 return types_get_info(&child, TI_GET_ADDRESS, start);
60 count -= min(count, 256);
68 static BOOL fill_sym_lvalue(const SYMBOL_INFO* sym, ULONG base,
69 struct dbg_lvalue* lvalue, char* buffer, size_t sz)
71 if (buffer) buffer[0] = '\0';
72 if (sym->Flags & SYMFLAG_REGISTER)
76 if (!memory_get_register(sym->Register, &pval, buffer, sz))
78 lvalue->cookie = DLV_HOST;
79 lvalue->addr.Offset = (DWORD_PTR)pval;
81 else if (sym->Flags & SYMFLAG_REGREL)
85 if (!memory_get_register(sym->Register, &pval, buffer, sz))
87 lvalue->cookie = DLV_TARGET;
88 lvalue->addr.Offset = (ULONG)((ULONG64)*pval + sym->Address);
90 else if (sym->Flags & SYMFLAG_VALUEPRESENT)
96 type.module = sym->ModBase;
99 /* FIXME: this won't work for pointers, as we always for the
100 * dereference to be in debuggee address space while here
101 * it's in debugger address space
103 if (!types_get_info(&type, TI_GET_VALUE, &v) || (v.n1.n2.vt & VT_BYREF))
105 snprintf(buffer, sz, "Couldn't dereference pointer for const value");
108 pdw = (DWORD*)lexeme_alloc_size(sizeof(*pdw));
109 lvalue->cookie = DLV_HOST;
110 lvalue->addr.Offset = (ULONG)(DWORD_PTR)pdw;
113 else if (sym->Flags & SYMFLAG_LOCAL)
115 lvalue->cookie = DLV_TARGET;
116 lvalue->addr.Offset = base + sym->Address;
120 lvalue->cookie = DLV_TARGET;
121 lvalue->addr.Offset = sym->Address;
123 lvalue->addr.Mode = AddrModeFlat;
124 lvalue->type.module = sym->ModBase;
125 lvalue->type.id = sym->TypeIndex;
135 /* FIXME: NUMDBGV should be made variable */
136 struct dbg_lvalue lvalue;
139 } syms[NUMDBGV]; /* out : will be filled in with various found symbols */
140 int num; /* out : number of found symbols */
141 int num_thunks; /* out : number of thunks found */
142 const char* name; /* in : name of symbol to look up */
143 unsigned do_thunks : 1; /* in : whether we return thunks tags */
144 ULONG64 frame_offset; /* in : frame for local & parameter variables look up */
147 static BOOL CALLBACK sgv_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
149 struct sgv_data* sgv = (struct sgv_data*)ctx;
153 if (sym->Flags & SYMFLAG_THUNK)
155 if (!sgv->do_thunks) return TRUE;
159 if (sgv->num >= NUMDBGV)
161 dbg_printf("Too many addresses for symbol '%s', limiting the first %d\n",
165 WINE_TRACE("==> %s %s%s%s%s%s%s%s\n",
167 (sym->Flags & SYMFLAG_FUNCTION) ? "func " : "",
168 (sym->Flags & SYMFLAG_FRAMEREL) ? "framerel " : "",
169 (sym->Flags & SYMFLAG_REGISTER) ? "register " : "",
170 (sym->Flags & SYMFLAG_REGREL) ? "regrel " : "",
171 (sym->Flags & SYMFLAG_PARAMETER) ? "param " : "",
172 (sym->Flags & SYMFLAG_LOCAL) ? "local " : "",
173 (sym->Flags & SYMFLAG_THUNK) ? "thunk " : "");
175 /* always keep the thunks at end of the array */
177 if (sgv->num_thunks && !(sym->Flags & SYMFLAG_THUNK))
179 insp -= sgv->num_thunks;
180 memmove(&sgv->syms[insp + 1], &sgv->syms[insp],
181 sizeof(sgv->syms[0]) * sgv->num_thunks);
183 if (!fill_sym_lvalue(sym, sgv->frame_offset, &sgv->syms[insp].lvalue, tmp, sizeof(tmp)))
185 dbg_printf("%s: %s\n", sym->Name, tmp);
188 sgv->syms[insp].flags = sym->Flags;
189 sgv->syms[insp].sym_info = sym->info;
195 /***********************************************************************
198 * Get the address of a named symbol.
200 * sglv_found: if the symbol is found
201 * sglv_unknown: if the symbol isn't found
202 * sglv_aborted: some error occurred (likely, many symbols of same name exist,
203 * and user didn't pick one of them)
205 enum sym_get_lval symbol_get_lvalue(const char* name, const int lineno,
206 struct dbg_lvalue* rtn, BOOL bp_disp)
212 IMAGEHLP_STACK_FRAME ihsf;
214 if (strlen(name) + 4 > sizeof(buffer))
216 WINE_WARN("Too long symbol (%s)\n", name);
222 sgv.name = &buffer[2];
223 sgv.do_thunks = DBG_IVAR(AlwaysShowThunks);
225 if (strchr(name, '!'))
227 strcpy(buffer, name);
233 strcpy(&buffer[2], name);
236 /* this is a wine specific options to return also ELF modules in the
239 SymSetOptions((opt = SymGetOptions()) | 0x40000000);
240 SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
244 const char* ptr = strchr(name, '!');
245 if ((ptr && ptr[1] != '_') || (!ptr && *name != '_'))
249 int offset = ptr - name;
250 memcpy(buffer, name, offset + 1);
251 buffer[offset + 1] = '_';
252 strcpy(&buffer[offset + 2], ptr + 1);
259 strcpy(&buffer[3], name);
261 SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
266 /* now grab local symbols */
267 if (stack_get_current_frame(&ihsf) && sgv.num < NUMDBGV)
269 sgv.frame_offset = ihsf.FrameOffset;
270 SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
275 dbg_printf("No symbols found for %s\n", name);
279 /* recompute potential offsets for functions (linenumber, skip prolog) */
280 for (i = 0; i < sgv.num; i++)
282 if (sgv.syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL|SYMFLAG_LOCAL|SYMFLAG_THUNK))
287 struct dbg_type type;
290 type.module = sgv.syms[i].lvalue.type.module;
291 type.id = sgv.syms[i].sym_info;
292 if (bp_disp && symbol_get_debug_start(&type, &addr))
293 sgv.syms[i].lvalue.addr.Offset = addr;
301 il.SizeOfStruct = sizeof(il);
302 SymGetLineFromAddr(dbg_curr_process->handle,
303 (DWORD)memory_to_linear_addr(&sgv.syms[i].lvalue.addr),
307 if (lineno == il.LineNumber)
309 sgv.syms[i].lvalue.addr.Offset = il.Address;
313 } while (SymGetLineNext(dbg_curr_process->handle, &il));
315 WINE_FIXME("No line (%d) found for %s (setting to symbol start)\n",
321 if (dbg_interactiveP)
323 if (sgv.num - sgv.num_thunks > 1 || /* many symbols non thunks (and showing only non thunks) */
324 (sgv.num > 1 && DBG_IVAR(AlwaysShowThunks)) || /* many symbols (showing symbols & thunks) */
325 (sgv.num == sgv.num_thunks && sgv.num_thunks > 1))
327 dbg_printf("Many symbols with name '%s', "
328 "choose the one you want (<cr> to abort):\n", name);
329 for (i = 0; i < sgv.num; i++)
331 if (sgv.num - sgv.num_thunks > 1 && (sgv.syms[i].flags & SYMFLAG_THUNK) && !DBG_IVAR(AlwaysShowThunks))
333 dbg_printf("[%d]: ", i + 1);
334 if (sgv.syms[i].flags & SYMFLAG_LOCAL)
336 dbg_printf("%s %sof %s\n",
337 sgv.syms[i].flags & SYMFLAG_PARAMETER ? "Parameter" : "Local variable",
338 sgv.syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL) ? "(in a register) " : "",
341 else if (sgv.syms[i].flags & SYMFLAG_THUNK)
343 print_address(&sgv.syms[i].lvalue.addr, TRUE);
344 /* FIXME: should display where the thunks points to */
345 dbg_printf(" thunk %s\n", name);
349 print_address(&sgv.syms[i].lvalue.addr, TRUE);
356 if (input_read_line("=> ", buffer, sizeof(buffer)))
358 if (buffer[0] == '\0') return sglv_aborted;
360 if (i < 1 || i > sgv.num)
361 dbg_printf("Invalid choice %d\n", i);
363 else return sglv_aborted;
364 } while (i < 1 || i > sgv.num);
366 /* The array is 0-based, but the choices are 1..n,
367 * so we have to subtract one before returning.
374 /* FIXME: could display the list of non-picked up symbols */
376 dbg_printf("More than one symbol named %s, picking the first one\n", name);
378 *rtn = sgv.syms[i].lvalue;
382 BOOL symbol_is_local(const char* name)
385 IMAGEHLP_STACK_FRAME ihsf;
390 sgv.do_thunks = FALSE;
392 if (stack_get_current_frame(&ihsf))
394 sgv.frame_offset = ihsf.FrameOffset;
395 SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
400 /***********************************************************************
401 * symbol_read_symtable
403 * Read a symbol file into the hash table.
405 void symbol_read_symtable(const char* filename, unsigned long offset)
407 dbg_printf("No longer supported\n");
410 /* FIXME: have to implement SymAddSymbol in dbghelp, but likely we'll need to link
411 * this with an already loaded module !!
420 if (!(symbolfile = fopen(filename, "r")))
422 WINE_WARN("Unable to open symbol table %s\n", filename);
426 dbg_printf("Reading symbols from file %s\n", filename);
430 fgets(buffer, sizeof(buffer), symbolfile);
431 if (feof(symbolfile)) break;
433 /* Strip any text after a # sign (i.e. comments) */
434 cpnt = strchr(buffer, '#');
435 if (cpnt) *cpnt = '\0';
437 /* Quietly ignore any lines that have just whitespace */
438 for (cpnt = buffer; *cpnt; cpnt++)
440 if (*cpnt != ' ' && *cpnt != '\t') break;
442 if (!*cpnt || *cpnt == '\n') continue;
444 if (sscanf(buffer, "%lx %c %s", &addr, &type, name) == 3)
446 if (value.addr.off + offset < value.addr.off)
447 WINE_WARN("Address wrap around\n");
448 value.addr.off += offset;
449 SymAddSymbol(current_process->handle, BaseOfDll,
457 /***********************************************************************
458 * symbol_get_function_line_status
460 * Find the symbol nearest to a given address.
462 enum dbg_line_status symbol_get_function_line_status(const ADDRESS64* addr)
466 ULONG64 disp64, start;
467 DWORD lin = (DWORD)memory_to_linear_addr(addr);
468 char buffer[sizeof(SYMBOL_INFO) + 256];
469 SYMBOL_INFO* sym = (SYMBOL_INFO*)buffer;
470 struct dbg_type func;
472 il.SizeOfStruct = sizeof(il);
473 sym->SizeOfStruct = sizeof(SYMBOL_INFO);
474 sym->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
476 /* do we have some info for lin address ? */
477 if (!SymFromAddr(dbg_curr_process->handle, lin, &disp64, sym))
478 return dbg_no_line_info;
483 /* FIXME: so far dbghelp doesn't return the 16 <=> 32 thunks
484 * and furthermore, we no longer take care of them !!!
486 return dbg_in_a_thunk;
488 case SymTagPublicSymbol: break;
490 WINE_FIXME("Unexpected sym-tag 0x%08x\n", sym->Tag);
492 return dbg_no_line_info;
494 /* we should have a function now */
495 if (!SymGetLineFromAddr(dbg_curr_process->handle, lin, &disp, &il))
496 return dbg_no_line_info;
498 func.module = sym->ModBase;
501 if (symbol_get_debug_start(&func, &start) && lin < start)
502 return dbg_not_on_a_line_number;
504 if (!sym->Size) sym->Size = 0x100000;
505 if (il.FileName && il.FileName[0] && disp < sym->Size)
506 return (disp == 0) ? dbg_on_a_line_number : dbg_not_on_a_line_number;
508 return dbg_no_line_info;
511 /***********************************************************************
514 * Find the symbol nearest to a given address.
515 * Returns sourcefile name and line number in a format that the listing
516 * handler can deal with.
518 BOOL symbol_get_line(const char* filename, const char* name, IMAGEHLP_LINE* line)
522 DWORD opt, disp, linear;
523 unsigned i, found = FALSE;
528 sgv.name = &buffer[2];
529 sgv.do_thunks = FALSE;
533 strcpy(&buffer[2], name);
535 /* this is a wine specific options to return also ELF modules in the
538 SymSetOptions((opt = SymGetOptions()) | 0x40000000);
539 if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
545 if (!sgv.num && (name[0] != '_'))
548 strcpy(&buffer[3], name);
549 if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
557 for (i = 0; i < sgv.num; i++)
559 linear = (DWORD)memory_to_linear_addr(&sgv.syms[i].lvalue.addr);
561 il.SizeOfStruct = sizeof(il);
562 if (!SymGetLineFromAddr(dbg_curr_process->handle, linear, &disp, &il))
564 if (filename && strcmp(line->FileName, filename)) continue;
567 WINE_FIXME("Several found, returning first (may not be what you want)...\n");
575 if (filename) dbg_printf("No such function %s in %s\n", name, filename);
576 else dbg_printf("No such function %s\n", name);
582 /******************************************************************
586 * <name>=<value> in non detailed form
587 * <name>=<value> (local|pmt <where>) in detailed form
588 * Note <value> can be an error message in case of error
590 void symbol_print_local(const SYMBOL_INFO* sym, ULONG base,
593 struct dbg_lvalue lvalue;
596 dbg_printf("%s=", sym->Name);
598 if (fill_sym_lvalue(sym, base, &lvalue, buffer, sizeof(buffer)))
600 print_value(&lvalue, 'x', 1);
602 dbg_printf(" (%s%s)",
603 (sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local",
611 (sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local");
615 static BOOL CALLBACK info_locals_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
617 struct dbg_type type;
620 type.module = sym->ModBase;
621 type.id = sym->TypeIndex;
622 types_print_type(&type, FALSE);
625 symbol_print_local(sym, (ULONG)ctx, TRUE);
631 int symbol_info_locals(void)
633 IMAGEHLP_STACK_FRAME ihsf;
636 stack_get_current_frame(&ihsf);
637 addr.Mode = AddrModeFlat;
638 addr.Offset = ihsf.InstructionOffset;
639 print_address(&addr, FALSE);
640 dbg_printf(": (%08lx)\n", (DWORD_PTR)ihsf.FrameOffset);
641 SymEnumSymbols(dbg_curr_process->handle, 0, NULL, info_locals_cb, (void*)(DWORD_PTR)ihsf.FrameOffset);
647 static BOOL CALLBACK symbols_info_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
649 struct dbg_type type;
652 mi.SizeOfStruct = sizeof(mi);
654 if (!SymGetModuleInfo(dbg_curr_process->handle, sym->ModBase, &mi))
655 mi.ModuleName[0] = '\0';
658 size_t len = strlen(mi.ModuleName);
659 if (len > 5 && !strcmp(mi.ModuleName + len - 5, "<elf>"))
660 mi.ModuleName[len - 5] = '\0';
663 dbg_printf("%08lx: %s!%s", (ULONG_PTR)sym->Address, mi.ModuleName, sym->Name);
664 type.id = sym->TypeIndex;
665 type.module = sym->ModBase;
667 if (sym->TypeIndex != dbg_itype_none && sym->TypeIndex != 0)
670 types_print_type(&type, FALSE);
676 void symbol_info(const char* str)
681 if (strlen(str) + 3 >= sizeof(buffer))
683 dbg_printf("Symbol too long (%s)\n", str);
688 strcpy(&buffer[2], str);
689 /* this is a wine specific options to return also ELF modules in the
692 SymSetOptions((opt = SymGetOptions()) | 0x40000000);
693 SymEnumSymbols(dbg_curr_process->handle, 0, buffer, symbols_info_cb, NULL);