programs/winedbg/tgt_module.c

   1 /*
   2  * Wine debugger - loading a module for debug purposes
   3  *
   4  * Copyright 2006 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 #define NONAMELESSUNION
  22 #define NONAMELESSSTRUCT
  23
  24 #include "config.h"
  25
  26 #include <stdlib.h>
  27 #include <stdio.h>
  28 #include <string.h>
  29 #include <stdarg.h>
  30
  31 #include "debugger.h"
  32 #include "wine/debug.h"
  33
  34 WINE_DEFAULT_DEBUG_CHANNEL(winedbg);
  35
  36 static struct be_process_io be_process_module_io;
  37
  38 static BOOL WINAPI tgt_process_module_read(HANDLE hProcess, const void* addr,
  39                                              void* buffer, SIZE_T len, SIZE_T* rlen)
  40 {
  41     return FALSE;
  42 }
  43
  44 static BOOL WINAPI tgt_process_module_write(HANDLE hProcess, void* addr,
  45                                              const void* buffer, SIZE_T len, SIZE_T* wlen)
  46 {
  47     return FALSE;
  48 }
  49
  50 enum dbg_start tgt_module_load(const char* name, BOOL keep)
  51 {
  52     DWORD opts = SymGetOptions();
  53     HANDLE hDummy = (HANDLE)0x87654321;
  54     enum dbg_start ret = start_ok;
  55     WCHAR* nameW;
  56     unsigned len;
  57
  58     SymSetOptions((opts & ~(SYMOPT_UNDNAME|SYMOPT_DEFERRED_LOADS)) |
  59                   SYMOPT_LOAD_LINES | SYMOPT_AUTO_PUBLICS | 0x40000000);
  60     if (!dbg_init(hDummy, NULL, FALSE))
  61         return start_error_init;
  62     len = MultiByteToWideChar(CP_ACP, 0, name, -1, NULL, 0);
  63     nameW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
  64     if (!nameW)
  65     {
  66         ret = start_error_init;
  67         keep = FALSE;
  68     }
  69     else
  70     {
  71         len = MultiByteToWideChar(CP_ACP, 0, name, -1, nameW, len);
  72         if (!dbg_load_module(hDummy, NULL, nameW, 0, 0))
  73         {
  74             ret = start_error_init;
  75             keep = FALSE;
  76         }
  77         HeapFree(GetProcessHeap(), 0, nameW);
  78     }
  79
  80     if (keep)
  81     {
  82         dbg_printf("Non supported mode... errors may occur\n"
  83                    "Use at your own risks\n");
  84         SymSetOptions(SymGetOptions() | 0x40000000);
  85         dbg_curr_process = dbg_add_process(&be_process_module_io, 1, hDummy);
  86         dbg_curr_pid = 1;
  87         dbg_curr_thread = dbg_add_thread(dbg_curr_process, 2, NULL, NULL);
  88
  89         /* FIXME: missing thread creation, fetching frames, restoring dbghelp's options... */
  90     }
  91     else
  92     {
  93         SymCleanup(hDummy);
  94         SymSetOptions(opts);
  95     }
  96
  97     return ret;
  98 }
  99
 100 static BOOL tgt_process_module_close_process(struct dbg_process* pcs, BOOL kill)
 101 {
 102     SymCleanup(pcs->handle);
 103     dbg_del_process(pcs);
 104     return TRUE;
 105 }
 106
 107 static BOOL WINAPI tgt_process_module_get_selector(HANDLE hThread, DWORD sel, LDT_ENTRY* le)
 108 {
 109     return FALSE;
 110 }
 111
 112 static struct be_process_io be_process_module_io =
 113 {
 114     tgt_process_module_close_process,
 115     tgt_process_module_read,
 116     tgt_process_module_write,
 117     tgt_process_module_get_selector,
 118 };