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