dlls/dbghelp/memory.c

   1 /*
   2  * File memory.c - managing memory
   3  *
   4  * Copyright (C) 2004, Eric Pouech
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "config.h"
  22
  23 #include <assert.h>
  24 #include "dbghelp_private.h"
  25 #include "wine/debug.h"
  26
  27 WINE_DEFAULT_DEBUG_CHANNEL(dbghelp);
  28
  29 /******************************************************************
  30  *              addr_to_linear
  31  *
  32  * converts an address into its linear value
  33  */
  34 DWORD WINAPI addr_to_linear(HANDLE hProcess, HANDLE hThread, ADDRESS* addr)
  35 {
  36     LDT_ENTRY   le;
  37
  38     switch (addr->Mode)
  39     {
  40     case AddrMode1616:
  41         if (GetThreadSelectorEntry(hThread, addr->Segment, &le))
  42             return (le.HighWord.Bits.BaseHi << 24) +
  43                 (le.HighWord.Bits.BaseMid << 16) + le.BaseLow + LOWORD(addr->Offset);
  44         break;
  45     case AddrMode1632:
  46         if (GetThreadSelectorEntry(hThread, addr->Segment, &le))
  47             return (le.HighWord.Bits.BaseHi << 24) +
  48                 (le.HighWord.Bits.BaseMid << 16) + le.BaseLow + addr->Offset;
  49         break;
  50     case AddrModeReal:
  51         return (DWORD)(LOWORD(addr->Segment) << 4) + addr->Offset;
  52     case AddrModeFlat:
  53         return addr->Offset;
  54     default:
  55         FIXME("Unsupported (yet) mode (%x)\n", addr->Mode);
  56         return 0;
  57     }
  58     FIXME("Failed to linearize address %04x:%08x (mode %x)\n",
  59           addr->Segment, addr->Offset, addr->Mode);
  60     return 0;
  61 }