-
-static int dbg_hlp_init(HANDLE process_handle)
-{
- if (dbg_hlp) {
- /* debug help is already loaded */
- return 0;
- }
-
- /* allocation */
- dbg_hlp = xbt_new0(s_xbt_debug_hlp_t, 1);
-
- /* load the library */
- dbg_hlp->instance = LoadLibraryA("Dbghelp.dll");
-
- if (!dbg_hlp->instance) {
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int) GetLastError();
- }
-
- /* get the pointers to debug help library exported functions */
- dbg_hlp->sym_initialize =
- (xbt_pfn_sym_initialize_t) GetProcAddress(dbg_hlp->instance, "SymInitialize");
-
- dbg_hlp->sym_cleanup =
- (xbt_pfn_sym_cleanup_t) GetProcAddress(dbg_hlp->instance, "SymCleanup");
-
- dbg_hlp->sym_function_table_access =
- (xbt_pfn_sym_function_table_access_t) GetProcAddress(dbg_hlp->instance, "SymFunctionTableAccess");
-
- dbg_hlp->sym_get_line_from_addr =
- (xbt_pfn_sym_get_line_from_addr_t) GetProcAddress(dbg_hlp->instance, "SymGetLineFromAddr");
-
- dbg_hlp->sym_get_module_base =
- (xbt_pfn_sym_get_module_base_t) GetProcAddress(dbg_hlp->instance, "SymGetModuleBase");
-
- dbg_hlp->sym_get_options =
- (xbt_pfn_sym_get_options_t) GetProcAddress(dbg_hlp->instance, "SymGetOptions");
-
- dbg_hlp->sym_get_sym_from_addr =
- (xbt_pfn_sym_get_sym_from_addr_t) GetProcAddress(dbg_hlp->instance, "SymGetSymFromAddr");
-
- dbg_hlp->sym_set_options =
- (xbt_pfn_sym_set_options_t) GetProcAddress(dbg_hlp->instance, "SymSetOptions");
-
- dbg_hlp->stack_walk =
- (xbt_pfn_stack_walk_t) GetProcAddress(dbg_hlp->instance, "StackWalk");
-
- /* Check that everything worked well */
- if (!dbg_hlp->sym_initialize ||
- !dbg_hlp->sym_cleanup ||
- !dbg_hlp->sym_function_table_access ||
- !dbg_hlp->sym_get_line_from_addr ||
- !dbg_hlp->sym_get_module_base ||
- !dbg_hlp->sym_get_options ||
- !dbg_hlp->sym_get_sym_from_addr ||
- !dbg_hlp->sym_set_options ||
- !dbg_hlp->stack_walk
- ) {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int) GetLastError();
- }
-
- dbg_hlp->process_handle = process_handle;
-
- (*(dbg_hlp->sym_set_options)) ((*(dbg_hlp->sym_get_options)) () |
- SYMOPT_LOAD_LINES | SYMOPT_DEFERRED_LOADS);
-
- if (!(*(dbg_hlp->sym_initialize)) (dbg_hlp->process_handle, 0, 1)) {
- FreeLibrary(dbg_hlp->instance);
- free(dbg_hlp);
- dbg_hlp = NULL;
- return (int) GetLastError();
- }
-
-
- return 0;
-}
-
-static int dbg_hlp_finalize(void)
-{
- if (!dbg_hlp)
- return EINVAL;
-
- if (!(*(dbg_hlp->sym_cleanup)) (dbg_hlp->process_handle))
- return (int) GetLastError();
-
- if (!FreeLibrary(dbg_hlp->instance))
- return (int) GetLastError();
-
- free(dbg_hlp);
- dbg_hlp = NULL;
-
- return 0;
-}