mirror of
git://source.winehq.org/git/wine.git
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695 lines
21 KiB
C
695 lines
21 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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* 2004-2005, 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, 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(const struct dbg_type* func, ULONG64* 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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struct dbg_type child;
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if (!func->id) return FALSE; /* native dbghelp not always fills the info field */
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if (!types_get_info(func, 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(func, 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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child.module = func->module;
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child.id = fcp->ChildId[i];
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types_get_info(&child, TI_GET_SYMTAG, &tag);
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if (tag != SymTagFuncDebugStart) continue;
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return types_get_info(&child, 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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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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static BOOL fill_sym_lvalue(const SYMBOL_INFO* sym, ULONG base,
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struct dbg_lvalue* lvalue, char* buffer, size_t sz)
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{
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if (buffer) buffer[0] = '\0';
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if (sym->Flags & SYMFLAG_REGISTER)
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{
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DWORD* pval;
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if (!memory_get_register(sym->Register, &pval, buffer, sz))
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return FALSE;
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lvalue->cookie = DLV_HOST;
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lvalue->addr.Offset = (DWORD_PTR)pval;
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}
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else if (sym->Flags & SYMFLAG_REGREL)
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{
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DWORD* pval;
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if (!memory_get_register(sym->Register, &pval, buffer, sz))
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return FALSE;
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lvalue->cookie = DLV_TARGET;
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lvalue->addr.Offset = (ULONG)((ULONG64)*pval + sym->Address);
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}
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else if (sym->Flags & SYMFLAG_VALUEPRESENT)
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{
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struct dbg_type type;
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VARIANT v;
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DWORD* pdw;
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type.module = sym->ModBase;
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type.id = sym->info;
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/* FIXME: this won't work for pointers, as we always for the
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* dereference to be in debuggee address space while here
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* it's in debugger address space
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*/
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if (!types_get_info(&type, TI_GET_VALUE, &v) || (v.n1.n2.vt & VT_BYREF))
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{
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snprintf(buffer, sz, "Couldn't dereference pointer for const value");
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return FALSE;
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}
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pdw = (DWORD*)lexeme_alloc_size(sizeof(*pdw));
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lvalue->cookie = DLV_HOST;
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lvalue->addr.Offset = (ULONG)(DWORD_PTR)pdw;
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*pdw = sym->Value;
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}
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else if (sym->Flags & SYMFLAG_LOCAL)
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{
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lvalue->cookie = DLV_TARGET;
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lvalue->addr.Offset = base + sym->Address;
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}
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else
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{
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lvalue->cookie = DLV_TARGET;
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lvalue->addr.Offset = sym->Address;
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}
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lvalue->addr.Mode = AddrModeFlat;
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lvalue->type.module = sym->ModBase;
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lvalue->type.id = sym->TypeIndex;
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return TRUE;
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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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{
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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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DWORD sym_info;
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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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unsigned do_thunks : 1; /* in : whether we return thunks tags */
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ULONG64 frame_offset; /* in : frame for local & parameter variables look up */
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};
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static BOOL CALLBACK sgv_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
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{
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struct sgv_data* sgv = (struct sgv_data*)ctx;
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unsigned insp;
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char tmp[64];
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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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}
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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%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_LOCAL) ? "local " : "",
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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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if (!fill_sym_lvalue(sym, sgv->frame_offset, &sgv->syms[insp].lvalue, tmp, sizeof(tmp)))
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{
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dbg_printf("%s: %s\n", sym->Name, tmp);
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return TRUE;
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}
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sgv->syms[insp].flags = sym->Flags;
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sgv->syms[insp].sym_info = sym->info;
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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;
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char buffer[512];
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DWORD opt;
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IMAGEHLP_STACK_FRAME ihsf;
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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.do_thunks = DBG_IVAR(AlwaysShowThunks);
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if (strchr(name, '!'))
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{
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strcpy(buffer, name);
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}
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else
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{
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buffer[0] = '*';
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buffer[1] = '!';
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strcpy(&buffer[2], name);
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}
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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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SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
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if (!sgv.num)
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{
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const char* ptr = strchr(name, '!');
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if ((ptr && ptr[1] != '_') || (!ptr && *name != '_'))
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{
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if (ptr)
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{
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int offset = ptr - name;
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memcpy(buffer, name, offset + 1);
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buffer[offset + 1] = '_';
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strcpy(&buffer[offset + 2], ptr + 1);
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}
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else
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{
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buffer[0] = '*';
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buffer[1] = '!';
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buffer[2] = '_';
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strcpy(&buffer[3], name);
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}
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SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv);
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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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if (stack_get_current_frame(&ihsf) && sgv.num < NUMDBGV)
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{
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sgv.frame_offset = ihsf.FrameOffset;
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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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/* recompute potential offsets for functions (linenumber, skip prolog) */
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for (i = 0; i < sgv.num; i++)
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{
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if (sgv.syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL|SYMFLAG_LOCAL|SYMFLAG_THUNK))
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continue;
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if (lineno == -1)
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{
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struct dbg_type type;
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ULONG64 addr;
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type.module = sgv.syms[i].lvalue.type.module;
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type.id = sgv.syms[i].sym_info;
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if (bp_disp && symbol_get_debug_start(&type, &addr))
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sgv.syms[i].lvalue.addr.Offset = addr;
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}
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else
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{
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DWORD disp;
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IMAGEHLP_LINE il;
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BOOL found = FALSE;
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il.SizeOfStruct = sizeof(il);
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SymGetLineFromAddr(dbg_curr_process->handle,
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(DWORD)memory_to_linear_addr(&sgv.syms[i].lvalue.addr),
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&disp, &il);
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do
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{
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if (lineno == il.LineNumber)
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{
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sgv.syms[i].lvalue.addr.Offset = il.Address;
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found = TRUE;
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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 (!found)
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WINE_FIXME("No line (%d) found for %s (setting to symbol start)\n",
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lineno, name);
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}
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}
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i = 0;
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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("%s %sof %s\n",
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sgv.syms[i].flags & SYMFLAG_PARAMETER ? "Parameter" : "Local variable",
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sgv.syms[i].flags & (SYMFLAG_REGISTER|SYMFLAG_REGREL) ? "(in a register) " : "",
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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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else return sglv_aborted;
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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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/* FIXME: could display the list of non-picked up symbols */
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if (sgv.num > 1)
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dbg_printf("More than one symbol named %s, picking the first one\n", name);
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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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BOOL symbol_is_local(const char* name)
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{
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struct sgv_data sgv;
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IMAGEHLP_STACK_FRAME ihsf;
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sgv.num = 0;
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sgv.num_thunks = 0;
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sgv.name = name;
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sgv.do_thunks = FALSE;
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if (stack_get_current_frame(&ihsf))
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{
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sgv.frame_offset = ihsf.FrameOffset;
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SymEnumSymbols(dbg_curr_process->handle, 0, name, sgv_cb, (void*)&sgv);
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}
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return sgv.num > 0;
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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 we'll need to link
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* this with an already 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 ADDRESS64* addr)
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{
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IMAGEHLP_LINE il;
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DWORD disp;
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ULONG64 disp64, start;
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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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struct dbg_type func;
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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, &disp64, 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%08x\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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func.module = sym->ModBase;
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func.id = sym->info;
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if (symbol_get_debug_start(&func, &start) && lin < start)
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return dbg_not_on_a_line_number;
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if (!sym->Size) sym->Size = 0x100000;
|
|
if (il.FileName && il.FileName[0] && disp < sym->Size)
|
|
return (disp == 0) ? dbg_on_a_line_number : dbg_not_on_a_line_number;
|
|
|
|
return dbg_no_line_info;
|
|
}
|
|
|
|
/***********************************************************************
|
|
* symbol_get_line
|
|
*
|
|
* Find the symbol nearest to a given address.
|
|
* Returns sourcefile name and line number in a format that the listing
|
|
* handler can deal with.
|
|
*/
|
|
BOOL symbol_get_line(const char* filename, const char* name, IMAGEHLP_LINE* line)
|
|
{
|
|
struct sgv_data sgv;
|
|
char buffer[512];
|
|
DWORD opt, disp, linear;
|
|
unsigned i, found = FALSE;
|
|
IMAGEHLP_LINE il;
|
|
|
|
sgv.num = 0;
|
|
sgv.num_thunks = 0;
|
|
sgv.name = &buffer[2];
|
|
sgv.do_thunks = FALSE;
|
|
|
|
buffer[0] = '*';
|
|
buffer[1] = '!';
|
|
strcpy(&buffer[2], name);
|
|
|
|
/* this is a wine specific options to return also ELF modules in the
|
|
* enumeration
|
|
*/
|
|
SymSetOptions((opt = SymGetOptions()) | 0x40000000);
|
|
if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
|
|
{
|
|
SymSetOptions(opt);
|
|
return FALSE;
|
|
}
|
|
|
|
if (!sgv.num && (name[0] != '_'))
|
|
{
|
|
buffer[2] = '_';
|
|
strcpy(&buffer[3], name);
|
|
if (!SymEnumSymbols(dbg_curr_process->handle, 0, buffer, sgv_cb, (void*)&sgv))
|
|
{
|
|
SymSetOptions(opt);
|
|
return FALSE;
|
|
}
|
|
}
|
|
SymSetOptions(opt);
|
|
|
|
for (i = 0; i < sgv.num; i++)
|
|
{
|
|
linear = (DWORD)memory_to_linear_addr(&sgv.syms[i].lvalue.addr);
|
|
|
|
il.SizeOfStruct = sizeof(il);
|
|
if (!SymGetLineFromAddr(dbg_curr_process->handle, linear, &disp, &il))
|
|
continue;
|
|
if (filename && strcmp(line->FileName, filename)) continue;
|
|
if (found)
|
|
{
|
|
WINE_FIXME("Several found, returning first (may not be what you want)...\n");
|
|
break;
|
|
}
|
|
found = TRUE;
|
|
*line = il;
|
|
}
|
|
if (!found)
|
|
{
|
|
if (filename) dbg_printf("No such function %s in %s\n", name, filename);
|
|
else dbg_printf("No such function %s\n", name);
|
|
return FALSE;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/******************************************************************
|
|
* symbol_print_local
|
|
*
|
|
* Overall format is:
|
|
* <name>=<value> in non detailed form
|
|
* <name>=<value> (local|pmt <where>) in detailed form
|
|
* Note <value> can be an error message in case of error
|
|
*/
|
|
void symbol_print_local(const SYMBOL_INFO* sym, ULONG base,
|
|
BOOL detailed)
|
|
{
|
|
struct dbg_lvalue lvalue;
|
|
char buffer[64];
|
|
|
|
dbg_printf("%s=", sym->Name);
|
|
|
|
if (fill_sym_lvalue(sym, base, &lvalue, buffer, sizeof(buffer)))
|
|
{
|
|
print_value(&lvalue, 0, 1);
|
|
if (detailed)
|
|
dbg_printf(" (%s%s)",
|
|
(sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local",
|
|
buffer);
|
|
}
|
|
else
|
|
{
|
|
dbg_printf(buffer);
|
|
if (detailed)
|
|
dbg_printf(" (%s)",
|
|
(sym->Flags & SYMFLAG_PARAMETER) ? "parameter" : "local");
|
|
}
|
|
}
|
|
|
|
static BOOL CALLBACK info_locals_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
|
|
{
|
|
struct dbg_type type;
|
|
|
|
dbg_printf("\t");
|
|
type.module = sym->ModBase;
|
|
type.id = sym->TypeIndex;
|
|
types_print_type(&type, FALSE);
|
|
|
|
dbg_printf(" ");
|
|
symbol_print_local(sym, (ULONG)ctx, TRUE);
|
|
dbg_printf("\n");
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
int symbol_info_locals(void)
|
|
{
|
|
IMAGEHLP_STACK_FRAME ihsf;
|
|
ADDRESS64 addr;
|
|
|
|
stack_get_current_frame(&ihsf);
|
|
addr.Mode = AddrModeFlat;
|
|
addr.Offset = ihsf.InstructionOffset;
|
|
print_address(&addr, FALSE);
|
|
dbg_printf(": (%08lx)\n", (DWORD_PTR)ihsf.FrameOffset);
|
|
SymEnumSymbols(dbg_curr_process->handle, 0, NULL, info_locals_cb, (void*)(DWORD_PTR)ihsf.FrameOffset);
|
|
|
|
return TRUE;
|
|
|
|
}
|
|
|
|
static BOOL CALLBACK symbols_info_cb(PSYMBOL_INFO sym, ULONG size, PVOID ctx)
|
|
{
|
|
struct dbg_type type;
|
|
IMAGEHLP_MODULE mi;
|
|
|
|
mi.SizeOfStruct = sizeof(mi);
|
|
|
|
if (!SymGetModuleInfo(dbg_curr_process->handle, sym->ModBase, &mi))
|
|
mi.ModuleName[0] = '\0';
|
|
else
|
|
{
|
|
size_t len = strlen(mi.ModuleName);
|
|
if (len > 5 && !strcmp(mi.ModuleName + len - 5, "<elf>"))
|
|
mi.ModuleName[len - 5] = '\0';
|
|
}
|
|
|
|
dbg_printf("%08lx: %s!%s", (ULONG_PTR)sym->Address, mi.ModuleName, sym->Name);
|
|
type.id = sym->TypeIndex;
|
|
type.module = sym->ModBase;
|
|
|
|
if (sym->TypeIndex != dbg_itype_none && sym->TypeIndex != 0)
|
|
{
|
|
dbg_printf(" ");
|
|
types_print_type(&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);
|
|
}
|