591 lines
19 KiB
C
591 lines
19 KiB
C
/*
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* Generate hash tables for Wine debugger symbols
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*
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* Copyright (C) 1993, Eric Youngdale.
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* 2004, Eric Pouech.
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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*/
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#define NONAMELESSUNION
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#define NONAMELESSSTRUCT
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#include "config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include "debugger.h"
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#include "wine/debug.h"
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WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
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static BOOL symbol_get_debug_start(DWORD mod_base, DWORD typeid, DWORD* start)
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{
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DWORD count, tag;
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char buffer[sizeof(TI_FINDCHILDREN_PARAMS) + 256 * sizeof(DWORD)];
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TI_FINDCHILDREN_PARAMS* fcp = (TI_FINDCHILDREN_PARAMS*)buffer;
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int i;
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if (!types_get_info(mod_base, typeid, TI_GET_CHILDRENCOUNT, &count)) return FALSE;
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fcp->Start = 0;
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while (count)
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{
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fcp->Count = min(count, 256);
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if (types_get_info(mod_base, typeid, TI_FINDCHILDREN, fcp))
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{
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for (i = 0; i < min(fcp->Count, count); i++)
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{
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types_get_info(mod_base, fcp->ChildId[i], TI_GET_SYMTAG, &tag);
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if (tag != SymTagFuncDebugStart) continue;
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return types_get_info(mod_base, fcp->ChildId[i], TI_GET_ADDRESS, start);
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}
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count -= min(count, 256);
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fcp->Start += 256;
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}
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}
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return FALSE;
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}
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struct sgv_data
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{
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#define NUMDBGV 100
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struct {
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/* FIXME: NUMDBGV should be made variable */
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struct dbg_lvalue lvalue;
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DWORD flags;
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} syms[NUMDBGV]; /* out : will be filled in with various found symbols */
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int num; /* out : number of found symbols */
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int num_thunks; /* out : number of thunks found */
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const char* name; /* in : name of symbol to look up */
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const char* filename; /* in (opt): filename where to look up symbol */
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int lineno; /* in (opt): line number in filename where to look up symbol */
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unsigned bp_disp : 1, /* in : whether if we take into account func address or func first displayable insn */
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do_thunks : 1; /* in : whether we return thunks tags */
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IMAGEHLP_STACK_FRAME ihsf; /* in : frame for local & parameter variables look up */
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};
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static BOOL CALLBACK sgv_cb(SYMBOL_INFO* sym, ULONG size, void* ctx)
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{
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struct sgv_data* sgv = (struct sgv_data*)ctx;
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DWORD addr;
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IMAGEHLP_LINE il;
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unsigned cookie = DLV_TARGET, insp;
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if (sym->Flags & SYMFLAG_REGISTER)
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{
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const struct dbg_internal_var* div;
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if (dbg_curr_frame != 0)
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{
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dbg_printf(" %s (register): << cannot display, not in correct frame\n",
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sym->Name);
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return TRUE;
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}
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for (div = dbg_context_vars; div->name && div->val != sym->Register; div++);
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if (!div->name)
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{
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dbg_printf(" %s (register): couldn't find register %lu\n",
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sym->Name, sym->Register);
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return TRUE;
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}
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addr = (DWORD)div->pval;
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cookie = DLV_HOST;
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}
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else if (sym->Flags & SYMFLAG_FRAMEREL)
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{
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ULONG offset;
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types_get_info(sym->ModBase, sym->TypeIndex, TI_GET_OFFSET, &offset);
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addr = sgv->ihsf.FrameOffset + offset;
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}
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else if (sym->Flags & SYMFLAG_THUNK)
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{
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if (!sgv->do_thunks) return TRUE;
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sgv->num_thunks++;
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addr = sym->Address;
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}
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else
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{
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il.SizeOfStruct = sizeof(il);
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SymGetLineFromAddr(dbg_curr_process->handle, sym->Address, NULL, &il);
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if (sgv->filename && strcmp(sgv->filename, il.FileName))
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{
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WINE_FIXME("File name mismatch (%s / %s)\n", sgv->filename, il.FileName);
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return TRUE;
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}
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if (sgv->lineno == -1)
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{
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if (!sgv->bp_disp ||
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!symbol_get_debug_start(sym->ModBase, sym->TypeIndex, &addr))
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addr = sym->Address;
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}
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else
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{
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addr = 0;
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do
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{
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if (sgv->lineno == il.LineNumber)
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{
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addr = il.Address;
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break;
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}
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} while (SymGetLineNext(dbg_curr_process->handle, &il));
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if (!addr)
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{
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WINE_FIXME("No line (%d) found for %s (setting to symbol)\n",
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sgv->lineno, sgv->name);
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addr = sym->Address;
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}
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}
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}
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if (sgv->num >= NUMDBGV)
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{
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dbg_printf("Too many addresses for symbol '%s', limiting the first %d\n",
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sgv->name, NUMDBGV);
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return FALSE;
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}
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WINE_TRACE("==> %s %s%s%s%s%s%s\n",
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sym->Name,
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(sym->Flags & SYMFLAG_FUNCTION) ? "func " : "",
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(sym->Flags & SYMFLAG_FRAMEREL) ? "framerel " : "",
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(sym->Flags & SYMFLAG_REGISTER) ? "register " : "",
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(sym->Flags & SYMFLAG_REGREL) ? "regrel " : "",
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(sym->Flags & SYMFLAG_PARAMETER) ? "param " : "",
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(sym->Flags & SYMFLAG_THUNK) ? "thunk " : "");
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/* always keep the thunks at end of the array */
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insp = sgv->num;
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if (sgv->num_thunks && !(sym->Flags & SYMFLAG_THUNK))
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{
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insp -= sgv->num_thunks;
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memmove(&sgv->syms[insp + 1], &sgv->syms[insp],
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sizeof(sgv->syms[0]) * sgv->num_thunks);
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}
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sgv->syms[insp].lvalue.addr.Mode = AddrModeFlat;
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sgv->syms[insp].lvalue.addr.Offset = addr;
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types_get_info(sym->ModBase, sym->TypeIndex, TI_GET_TYPE,
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&sgv->syms[insp].lvalue.typeid);
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sgv->syms[insp].lvalue.cookie = cookie;
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sgv->syms[insp].flags = sym->Flags;
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sgv->num++;
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return TRUE;
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}
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/***********************************************************************
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* symbol_get_lvalue
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*
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* Get the address of a named symbol.
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* Return values:
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* sglv_found: if the symbol is found
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* sglv_unknown: if the symbol isn't found
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* sglv_aborted: some error occurred (likely, many symbols of same name exist,
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* and user didn't pick one of them)
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*/
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enum sym_get_lval symbol_get_lvalue(const char* name, const int lineno,
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struct dbg_lvalue* rtn, BOOL bp_disp)
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{
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struct sgv_data sgv;
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int i = 0;
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char tmp[sizeof(SYMBOL_INFO) + 256];
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SYMBOL_INFO* si = (SYMBOL_INFO*)tmp;
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char buffer[512];
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DWORD opt;
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if (strlen(name) + 4 > sizeof(buffer))
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{
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WINE_WARN("Too long symbol (%s)\n", name);
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return sglv_unknown;
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}
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sgv.num = 0;
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sgv.num_thunks = 0;
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sgv.name = &buffer[2];
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sgv.filename = NULL;
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sgv.lineno = lineno;
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sgv.bp_disp = bp_disp ? TRUE : FALSE;
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sgv.do_thunks = DBG_IVAR(AlwaysShowThunks);
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buffer[0] = '*';
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buffer[1] = '!';
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strcpy(&buffer[2], name);
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/* this is a wine specific options to return also ELF modules in the
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* enumeration
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*/
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SymSetOptions((opt = SymGetOptions()) | 0x40000000);
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if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
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{
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SymSetOptions(opt);
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return sglv_unknown;
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}
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if (!sgv.num && (name[0] != '_'))
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{
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buffer[2] = '_';
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strcpy(&buffer[3], name);
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if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
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{
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SymSetOptions(opt);
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return sglv_unknown;
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}
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}
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SymSetOptions(opt);
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/* now grab local symbols */
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si->SizeOfStruct = sizeof(*si);
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si->MaxNameLen = 256;
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if (stack_get_frame(si, &sgv.ihsf) && sgv.num < NUMDBGV)
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{
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if (SymSetContext(dbg_curr_process->handle, &sgv.ihsf, NULL))
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SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
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}
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if (!sgv.num)
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{
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dbg_printf("No symbols found for %s\n", name);
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return sglv_unknown;
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}
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if (dbg_interactiveP)
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{
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if (sgv.num - sgv.num_thunks > 1 || /* many symbols non thunks (and showing only non thunks) */
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(sgv.num > 1 && DBG_IVAR(AlwaysShowThunks)) || /* many symbols (showing symbols & thunks) */
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(sgv.num == sgv.num_thunks && sgv.num_thunks > 1))
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{
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dbg_printf("Many symbols with name '%s', "
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"choose the one you want (<cr> to abort):\n", name);
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for (i = 0; i < sgv.num; i++)
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{
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if (sgv.num - sgv.num_thunks > 1 && (sgv.syms[i].flags & SYMFLAG_THUNK) && !DBG_IVAR(AlwaysShowThunks))
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continue;
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dbg_printf("[%d]: ", i + 1);
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if (sgv.syms[i].flags & SYMFLAG_LOCAL)
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{
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dbg_printf("local variable of %s\n", si->Name);
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}
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else if (sgv.syms[i].flags & SYMFLAG_PARAMETER)
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{
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dbg_printf("parameter of %s\n", si->Name);
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}
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else if (sgv.syms[i].flags & SYMFLAG_THUNK)
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{
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print_address(&sgv.syms[i].lvalue.addr, TRUE);
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/* FIXME: should display where the thunks points to */
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dbg_printf(" thunk %s\n", name);
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}
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else
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{
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print_address(&sgv.syms[i].lvalue.addr, TRUE);
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dbg_printf("\n");
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}
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}
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do
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{
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i = 0;
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if (input_read_line("=> ", buffer, sizeof(buffer)))
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{
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if (buffer[0] == '\0') return sglv_aborted;
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i = atoi(buffer);
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if (i < 1 || i > sgv.num)
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dbg_printf("Invalid choice %d\n", i);
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}
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} while (i < 1 || i > sgv.num);
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/* The array is 0-based, but the choices are 1..n,
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* so we have to subtract one before returning.
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*/
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i--;
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}
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}
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else
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{
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dbg_printf("More than one symbol named %s, picking the first one\n", name);
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i = 0;
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}
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*rtn = sgv.syms[i].lvalue;
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return sglv_found;
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}
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/***********************************************************************
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* symbol_read_symtable
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*
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* Read a symbol file into the hash table.
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*/
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void symbol_read_symtable(const char* filename, unsigned long offset)
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{
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dbg_printf("No longer supported\n");
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#if 0
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/* FIXME: have to implement SymAddSymbol in dbghelp, but likely to link this with
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* a loaded module !!
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*/
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FILE* symbolfile;
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unsigned addr;
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char type;
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char* cpnt;
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char buffer[256];
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char name[256];
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if (!(symbolfile = fopen(filename, "r")))
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{
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WINE_WARN("Unable to open symbol table %s\n", filename);
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return;
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}
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dbg_printf("Reading symbols from file %s\n", filename);
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while (1)
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{
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fgets(buffer, sizeof(buffer), symbolfile);
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if (feof(symbolfile)) break;
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/* Strip any text after a # sign (i.e. comments) */
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cpnt = strchr(buffer, '#');
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if (cpnt) *cpnt = '\0';
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/* Quietly ignore any lines that have just whitespace */
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for (cpnt = buffer; *cpnt; cpnt++)
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{
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if (*cpnt != ' ' && *cpnt != '\t') break;
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}
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if (!*cpnt || *cpnt == '\n') continue;
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if (sscanf(buffer, "%lx %c %s", &addr, &type, name) == 3)
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{
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if (value.addr.off + offset < value.addr.off)
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WINE_WARN("Address wrap around\n");
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value.addr.off += offset;
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SymAddSymbol(current_process->handle, BaseOfDll,
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name, addr, 0, 0);
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}
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}
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fclose(symbolfile);
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#endif
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}
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/***********************************************************************
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* symbol_get_function_line_status
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*
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* Find the symbol nearest to a given address.
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*/
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enum dbg_line_status symbol_get_function_line_status(const ADDRESS* addr)
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{
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IMAGEHLP_LINE il;
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DWORD disp, start, size;
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DWORD lin = (DWORD)memory_to_linear_addr(addr);
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char buffer[sizeof(SYMBOL_INFO) + 256];
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SYMBOL_INFO* sym = (SYMBOL_INFO*)buffer;
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il.SizeOfStruct = sizeof(il);
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sym->SizeOfStruct = sizeof(SYMBOL_INFO);
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sym->MaxNameLen = sizeof(buffer) - sizeof(SYMBOL_INFO);
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/* do we have some info for lin address ? */
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if (!SymFromAddr(dbg_curr_process->handle, lin, NULL, sym))
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return dbg_no_line_info;
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switch (sym->Tag)
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{
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case SymTagThunk:
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/* FIXME: so far dbghelp doesn't return the 16 <=> 32 thunks
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* and furthermore, we no longer take care of them !!!
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*/
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return dbg_in_a_thunk;
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case SymTagFunction:
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case SymTagPublicSymbol: break;
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default:
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WINE_FIXME("Unexpected sym-tag 0x%08lx\n", sym->Tag);
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case SymTagData:
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return dbg_no_line_info;
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}
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/* we should have a function now */
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if (!SymGetLineFromAddr(dbg_curr_process->handle, lin, &disp, &il))
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return dbg_no_line_info;
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if (symbol_get_debug_start(sym->ModBase, sym->TypeIndex, &start) && lin < start)
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return dbg_not_on_a_line_number;
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if (!types_get_info(sym->ModBase, sym->TypeIndex, TI_GET_LENGTH, &size) || size == 0)
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size = 0x100000;
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if (il.FileName && il.FileName[0] && disp < size)
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return (disp == 0) ? dbg_on_a_line_number : dbg_not_on_a_line_number;
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return dbg_no_line_info;
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}
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/***********************************************************************
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* symbol_get_line
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*
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* Find the symbol nearest to a given address.
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* Returns sourcefile name and line number in a format that the listing
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* handler can deal with.
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*/
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BOOL symbol_get_line(const char* filename, const char* name, IMAGEHLP_LINE* line)
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{
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struct sgv_data sgv;
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char buffer[512];
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DWORD opt;
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sgv.num = 0;
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sgv.num_thunks = 0;
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sgv.name = &buffer[2];
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sgv.filename = filename;
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sgv.lineno = -1;
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sgv.bp_disp = FALSE;
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sgv.do_thunks = FALSE;
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buffer[0] = '*';
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buffer[1] = '!';
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strcpy(&buffer[2], name);
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/* this is a wine specific options to return also ELF modules in the
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* enumeration
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*/
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SymSetOptions((opt = SymGetOptions()) | 0x40000000);
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if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
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{
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SymSetOptions(opt);
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return sglv_unknown;
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}
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if (!sgv.num && (name[0] != '_'))
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{
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buffer[2] = '_';
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strcpy(&buffer[3], name);
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if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
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{
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SymSetOptions(opt);
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return sglv_unknown;
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}
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}
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SymSetOptions(opt);
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switch (sgv.num)
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{
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case 0:
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if (filename) dbg_printf("No such function %s in %s\n", name, filename);
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else dbg_printf("No such function %s\n", name);
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return FALSE;
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default:
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WINE_FIXME("Several found, returning first (may not be what you want)...\n");
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case 1:
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return SymGetLineFromAddr(dbg_curr_process->handle,
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(DWORD)memory_to_linear_addr(&sgv.syms[0].lvalue.addr),
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NULL, line);
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}
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return TRUE;
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}
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static BOOL CALLBACK info_locals_cb(SYMBOL_INFO* sym, ULONG size, void* ctx)
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{
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DWORD tid;
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ULONG v, val;
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const char* explain = NULL;
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char buf[128];
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dbg_printf("\t");
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types_get_info(sym->ModBase, sym->TypeIndex, TI_GET_TYPE, &tid);
|
|
types_print_type(sym->ModBase, tid, FALSE);
|
|
|
|
if (sym->Flags & SYMFLAG_LOCAL) explain = "local";
|
|
else if (sym->Flags & SYMFLAG_PARAMETER) explain = "parameter";
|
|
else if (sym->Flags & SYMFLAG_REGISTER) explain = buf;
|
|
|
|
if (sym->Flags & SYMFLAG_REGISTER)
|
|
{
|
|
const struct dbg_internal_var* div;
|
|
|
|
if (dbg_curr_frame != 0)
|
|
{
|
|
dbg_printf(" %s (register): << cannot display, not in correct frame\n",
|
|
sym->Name);
|
|
return TRUE;
|
|
}
|
|
for (div = dbg_context_vars; div->name; div++)
|
|
{
|
|
if (div->val == sym->Register)
|
|
{
|
|
val = *div->pval;
|
|
sprintf(buf, "local in register %s", div->name);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
else if (sym->Flags & SYMFLAG_FRAMEREL)
|
|
{
|
|
types_get_info(sym->ModBase, sym->TypeIndex, TI_GET_OFFSET, &v);
|
|
v += ((IMAGEHLP_STACK_FRAME*)ctx)->FrameOffset;
|
|
|
|
dbg_read_memory_verbose((void*)v, &val, sizeof(val));
|
|
}
|
|
dbg_printf(" %s = 0x%8.8lx (%s)\n", sym->Name, val, explain);
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
int symbol_info_locals(void)
|
|
{
|
|
IMAGEHLP_STACK_FRAME ihsf;
|
|
char buffer[sizeof(SYMBOL_INFO) + 256];
|
|
SYMBOL_INFO* si = (SYMBOL_INFO*)buffer;
|
|
|
|
si->SizeOfStruct = sizeof(*si);
|
|
si->MaxNameLen = 256;
|
|
if (stack_get_frame(si, &ihsf))
|
|
{
|
|
dbg_printf("%s:\n", si->Name);
|
|
if (SymSetContext(dbg_curr_process->handle, &ihsf, NULL))
|
|
SymEnumSymbols(dbg_curr_process->handle, 0, NULL, info_locals_cb, &ihsf);
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
static BOOL CALLBACK symbols_info_cb(SYMBOL_INFO* sym, ULONG size, void* ctx)
|
|
{
|
|
DWORD type;
|
|
|
|
dbg_printf("%08lx: %s (", sym->Address, sym->Name);
|
|
if (sym->TypeIndex != dbg_itype_none && sym->TypeIndex != 0 &&
|
|
types_get_info(sym->ModBase, sym->TypeIndex, TI_GET_TYPE, &type))
|
|
{
|
|
types_print_type(sym->ModBase, type, FALSE);
|
|
}
|
|
dbg_printf(")\n");
|
|
return TRUE;
|
|
}
|
|
|
|
void symbol_info(const char* str)
|
|
{
|
|
char buffer[512];
|
|
DWORD opt;
|
|
|
|
if (strlen(str) + 3 >= sizeof(buffer))
|
|
{
|
|
dbg_printf("Symbol too long (%s)\n", str);
|
|
return;
|
|
}
|
|
buffer[0] = '*';
|
|
buffer[1] = '!';
|
|
strcpy(&buffer[2], str);
|
|
/* this is a wine specific options to return also ELF modules in the
|
|
* enumeration
|
|
*/
|
|
SymSetOptions((opt = SymGetOptions()) | 0x40000000);
|
|
SymEnumSymbols(dbg_curr_process->handle, 0, buffer, symbols_info_cb, NULL);
|
|
SymSetOptions(opt);
|
|
}
|