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 if (buffer) 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 = 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 enum sym_get_lval symbol_picker_interactive(const char* name, const struct sgv_data* sgv,
196 struct dbg_lvalue* rtn)
201 if (!dbg_interactiveP)
203 dbg_printf("More than one symbol named %s, picking the first one\n", name);
204 *rtn = sgv->syms[0].lvalue;
208 dbg_printf("Many symbols with name '%s', "
209 "choose the one you want (<cr> to abort):\n", name);
210 for (i = 0; i < sgv->num; i++)
212 if (sgv->num - sgv->num_thunks > 1 && (sgv->syms[i].flags & SYMFLAG_THUNK) && !DBG_IVAR(AlwaysShowThunks))
214 dbg_printf("[%d]: ", i + 1);
215 if (sgv->syms[i].flags & SYMFLAG_LOCAL)
217 dbg_printf("%s %sof %s\n",
218 sgv->syms[i].flags & SYMFLAG_PARAMETER ? "Parameter" : "Local variable",
219 sgv->syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL) ? "(in a register) " : "",
222 else if (sgv->syms[i].flags & SYMFLAG_THUNK)
224 print_address(&sgv->syms[i].lvalue.addr, TRUE);
225 /* FIXME: should display where the thunks points to */
226 dbg_printf(" thunk %s\n", name);
230 print_address(&sgv->syms[i].lvalue.addr, TRUE);
237 if (input_read_line("=> ", buffer, sizeof(buffer)))
239 if (buffer[0] == '\0') return sglv_aborted;
241 if (i < 1 || i > sgv->num)
242 dbg_printf("Invalid choice %d\n", i);
244 else return sglv_aborted;
245 } while (i < 1 || i > sgv->num);
247 /* The array is 0-based, but the choices are 1..n,
248 * so we have to subtract one before returning.
250 *rtn = sgv->syms[i - 1].lvalue;
254 enum sym_get_lval symbol_picker_scoped(const char* name, const struct sgv_data* sgv,
255 struct dbg_lvalue* rtn)
260 for (i = 0; i < sgv->num; i++)
262 if (sgv->num - sgv->num_thunks > 1 && (sgv->syms[i].flags & SYMFLAG_THUNK) && !DBG_IVAR(AlwaysShowThunks))
264 if (sgv->syms[i].flags & SYMFLAG_LOCAL)
270 /* FIXME: several locals with same name... which one to pick ?? */
271 dbg_printf("Several local variables/parameters for %s, aborting\n", name);
278 *rtn = sgv->syms[local].lvalue;
281 /* no locals found, multiple globals... abort for now */
282 dbg_printf("Several global variables for %s, aborting\n", name);
286 symbol_picker_t symbol_current_picker = symbol_picker_interactive;
288 /***********************************************************************
291 * Get the address of a named symbol.
293 * sglv_found: if the symbol is found
294 * sglv_unknown: if the symbol isn't found
295 * sglv_aborted: some error occurred (likely, many symbols of same name exist,
296 * and user didn't pick one of them)
298 enum sym_get_lval symbol_get_lvalue(const char* name, const int lineno,
299 struct dbg_lvalue* rtn, BOOL bp_disp)
305 IMAGEHLP_STACK_FRAME ihsf;
307 if (strlen(name) + 4 > sizeof(buffer))
309 WINE_WARN("Too long symbol (%s)\n", name);
315 sgv.name = &buffer[2];
316 sgv.do_thunks = DBG_IVAR(AlwaysShowThunks);
318 if (strchr(name, '!'))
320 strcpy(buffer, name);
326 strcpy(&buffer[2], name);
329 /* this is a wine specific options to return also ELF modules in the
332 SymSetOptions((opt = SymGetOptions()) | 0x40000000);
333 SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
337 const char* ptr = strchr(name, '!');
338 if ((ptr && ptr[1] != '_') || (!ptr && *name != '_'))
342 int offset = ptr - name;
343 memcpy(buffer, name, offset + 1);
344 buffer[offset + 1] = '_';
345 strcpy(&buffer[offset + 2], ptr + 1);
352 strcpy(&buffer[3], name);
354 SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
359 /* now grab local symbols */
360 if (stack_get_current_frame(&ihsf) && sgv.num < NUMDBGV)
362 sgv.frame_offset = ihsf.FrameOffset;
363 SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
368 dbg_printf("No symbols found for %s\n", name);
372 /* recompute potential offsets for functions (linenumber, skip prolog) */
373 for (i = 0; i < sgv.num; i++)
375 if (sgv.syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL|SYMFLAG_LOCAL|SYMFLAG_THUNK))
380 struct dbg_type type;
383 type.module = sgv.syms[i].lvalue.type.module;
384 type.id = sgv.syms[i].sym_info;
385 if (bp_disp && symbol_get_debug_start(&type, &addr))
386 sgv.syms[i].lvalue.addr.Offset = addr;
394 il.SizeOfStruct = sizeof(il);
395 SymGetLineFromAddr(dbg_curr_process->handle,
396 (DWORD)memory_to_linear_addr(&sgv.syms[i].lvalue.addr),
400 if (lineno == il.LineNumber)
402 sgv.syms[i].lvalue.addr.Offset = il.Address;
406 } while (SymGetLineNext(dbg_curr_process->handle, &il));
408 WINE_FIXME("No line (%d) found for %s (setting to symbol start)\n",
413 if (sgv.num - sgv.num_thunks > 1 || /* many symbols non thunks (and showing only non thunks) */
414 (sgv.num > 1 && DBG_IVAR(AlwaysShowThunks)) || /* many symbols (showing symbols & thunks) */
415 (sgv.num == sgv.num_thunks && sgv.num_thunks > 1))
417 return symbol_current_picker(name, &sgv, rtn);
419 /* first symbol is the one we want:
420 * - only one symbol found,
421 * - or many symbols but only one non thunk when AlwaysShowThunks is FALSE
423 *rtn = sgv.syms[0].lvalue;
427 BOOL symbol_is_local(const char* name)
430 IMAGEHLP_STACK_FRAME ihsf;
435 sgv.do_thunks = FALSE;
437 if (stack_get_current_frame(&ihsf))
439 sgv.frame_offset = ihsf.FrameOffset;
440 SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
445 /***********************************************************************
446 * symbol_read_symtable
448 * Read a symbol file into the hash table.
450 void symbol_read_symtable(const char* filename, unsigned long offset)
452 dbg_printf("No longer supported\n");
455 /* FIXME: have to implement SymAddSymbol in dbghelp, but likely we'll need to link
456 * this with an already loaded module !!
465 if (!(symbolfile = fopen(filename, "r")))
467 WINE_WARN("Unable to open symbol table %s\n", filename);
471 dbg_printf("Reading symbols from file %s\n", filename);
475 fgets(buffer, sizeof(buffer), symbolfile);
476 if (feof(symbolfile)) break;
478 /* Strip any text after a # sign (i.e. comments) */
479 cpnt = strchr(buffer, '#');
480 if (cpnt) *cpnt = '\0';
482 /* Quietly ignore any lines that have just whitespace */
483 for (cpnt = buffer; *cpnt; cpnt++)
485 if (*cpnt != ' ' && *cpnt != '\t') break;
487 if (!*cpnt || *cpnt == '\n') continue;
489 if (sscanf(buffer, "%lx %c %s", &addr, &type, name) == 3)
491 if (value.addr.off + offset < value.addr.off)
492 WINE_WARN("Address wrap around\n");
493 value.addr.off += offset;
494 SymAddSymbol(current_process->handle, BaseOfDll,
502 /***********************************************************************
503 * symbol_get_function_line_status
505 * Find the symbol nearest to a given address.
507 enum dbg_line_status symbol_get_function_line_status(const ADDRESS64* addr)
511 ULONG64 disp64, start;
512 DWORD lin = (DWORD)memory_to_linear_addr(addr);
513 char buffer[sizeof(SYMBOL_INFO) + 256];
514 SYMBOL_INFO* sym = (SYMBOL_INFO*)buffer;
515 struct dbg_type func;
517 il.SizeOfStruct = sizeof(il);
518 sym->SizeOfStruct = sizeof(SYMBOL_INFO);
519 sym->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
521 /* do we have some info for lin address ? */
522 if (!SymFromAddr(dbg_curr_process->handle, lin, &disp64, sym))
523 return dbg_no_line_info;
528 /* FIXME: so far dbghelp doesn't return the 16 <=> 32 thunks
529 * and furthermore, we no longer take care of them !!!
531 return dbg_in_a_thunk;
533 case SymTagPublicSymbol: break;
535 WINE_FIXME("Unexpected sym-tag 0x%08x\n", sym->Tag);
537 return dbg_no_line_info;
539 /* we should have a function now */
540 if (!SymGetLineFromAddr(dbg_curr_process->handle, lin, &disp, &il))
541 return dbg_no_line_info;
543 func.module = sym->ModBase;
546 if (symbol_get_debug_start(&func, &start) && lin < start)
547 return dbg_not_on_a_line_number;
549 if (!sym->Size) sym->Size = 0x100000;
550 if (il.FileName && il.FileName[0] && disp < sym->Size)
551 return (disp == 0) ? dbg_on_a_line_number : dbg_not_on_a_line_number;
553 return dbg_no_line_info;
556 /***********************************************************************
559 * Find the symbol nearest to a given address.
560 * Returns sourcefile name and line number in a format that the listing
561 * handler can deal with.
563 BOOL symbol_get_line(const char* filename, const char* name, IMAGEHLP_LINE* line)
567 DWORD opt, disp, linear;
568 unsigned i, found = FALSE;
573 sgv.name = &buffer[2];
574 sgv.do_thunks = FALSE;
578 strcpy(&buffer[2], name);
580 /* this is a wine specific options to return also ELF modules in the
583 SymSetOptions((opt = SymGetOptions()) | 0x40000000);
584 if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
590 if (!sgv.num && (name[0] != '_'))
593 strcpy(&buffer[3], name);
594 if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
602 for (i = 0; i < sgv.num; i++)
604 linear = (DWORD)memory_to_linear_addr(&sgv.syms[i].lvalue.addr);
606 il.SizeOfStruct = sizeof(il);
607 if (!SymGetLineFromAddr(dbg_curr_process->handle, linear, &disp, &il))
609 if (filename && strcmp(line->FileName, filename)) continue;
612 WINE_FIXME("Several found, returning first (may not be what you want)...\n");
620 if (filename) dbg_printf("No such function %s in %s\n", name, filename);
621 else dbg_printf("No such function %s\n", name);
627 /******************************************************************
631 * <name>=<value> in non detailed form
632 * <name>=<value> (local|pmt <where>) in detailed form
633 * Note <value> can be an error message in case of error
635 void symbol_print_local(const SYMBOL_INFO* sym, ULONG base,
638 struct dbg_lvalue lvalue;
641 dbg_printf("%s=", sym->Name);
643 if (fill_sym_lvalue(sym, base, &lvalue, buffer, sizeof(buffer)))
645 print_value(&lvalue, 0, 1);
647 dbg_printf(" (%s%s)",
648 (sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local",
653 dbg_printf("%s", buffer);
656 (sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local");
660 static BOOL CALLBACK info_locals_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
662 struct dbg_type type;
665 type.module = sym->ModBase;
666 type.id = sym->TypeIndex;
667 types_print_type(&type, FALSE);
670 symbol_print_local(sym, (ULONG)ctx, TRUE);
676 int symbol_info_locals(void)
678 IMAGEHLP_STACK_FRAME ihsf;
681 stack_get_current_frame(&ihsf);
682 addr.Mode = AddrModeFlat;
683 addr.Offset = ihsf.InstructionOffset;
684 print_address(&addr, FALSE);
685 dbg_printf(": (%08lx)\n", (DWORD_PTR)ihsf.FrameOffset);
686 SymEnumSymbols(dbg_curr_process->handle, 0, NULL, info_locals_cb, (void*)(DWORD_PTR)ihsf.FrameOffset);
692 static BOOL CALLBACK symbols_info_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
694 struct dbg_type type;
697 mi.SizeOfStruct = sizeof(mi);
699 if (!SymGetModuleInfo(dbg_curr_process->handle, sym->ModBase, &mi))
700 mi.ModuleName[0] = '\0';
703 size_t len = strlen(mi.ModuleName);
704 if (len > 5 && !strcmp(mi.ModuleName + len - 5, "<elf>"))
705 mi.ModuleName[len - 5] = '\0';
708 dbg_printf("%08lx: %s!%s", (ULONG_PTR)sym->Address, mi.ModuleName, sym->Name);
709 type.id = sym->TypeIndex;
710 type.module = sym->ModBase;
712 if (sym->TypeIndex != dbg_itype_none && sym->TypeIndex != 0)
715 types_print_type(&type, FALSE);
721 void symbol_info(const char* str)
726 if (strlen(str) + 3 >= sizeof(buffer))
728 dbg_printf("Symbol too long (%s)\n", str);
733 strcpy(&buffer[2], str);
734 /* this is a wine specific options to return also ELF modules in the
737 SymSetOptions((opt = SymGetOptions()) | 0x40000000);
738 SymEnumSymbols(dbg_curr_process->handle, 0, buffer, symbols_info_cb, NULL);