/******************************************************************
* module_get_debug
*
* get the debug information from a module:
* - if the module's type is deferred, then force loading of debug info (and return
* the module itself)
* - if the module has no debug info and has an ELF container, then return the ELF
* container (and also force the ELF container's debug info loading if deferred)
* - otherwise return the module itself if it has some debug info
*/
BOOL module_get_debug(struct module_pair* pair)
{
IMAGEHLP_DEFERRED_SYMBOL_LOADW64 idslW64;
if (!pair->requested) return FALSE;
/* for a PE builtin, always get info from container */
if (!(pair->effective = module_get_container(pair->pcs, pair->requested)))
pair->effective = pair->requested;
/* if deferred, force loading */
if (pair->effective->module.SymType == SymDeferred)
{
BOOL ret;
if (pair->effective->is_virtual) ret = FALSE;
else switch (pair->effective->type)
{
#ifndef DBGHELP_STATIC_LIB
case DMT_ELF:
ret = elf_load_debug_info(pair->effective);
break;
#endif
case DMT_PE:
idslW64.SizeOfStruct = sizeof(idslW64);
idslW64.BaseOfImage = pair->effective->module.BaseOfImage;
idslW64.CheckSum = pair->effective->module.CheckSum;
idslW64.TimeDateStamp = pair->effective->module.TimeDateStamp;
memcpy(idslW64.FileName, pair->effective->module.ImageName,
sizeof(pair->effective->module.ImageName));
idslW64.Reparse = FALSE;
idslW64.hFile = INVALID_HANDLE_VALUE;
pcs_callback(pair->pcs, CBA_DEFERRED_SYMBOL_LOAD_START, &idslW64);
ret = pe_load_debug_info(pair->pcs, pair->effective);
pcs_callback(pair->pcs,
ret ? CBA_DEFERRED_SYMBOL_LOAD_COMPLETE : CBA_DEFERRED_SYMBOL_LOAD_FAILURE,
&idslW64);
break;
#ifndef DBGHELP_STATIC_LIB
case DMT_MACHO:
ret = macho_load_debug_info(pair->effective);
break;
#endif
default:
ret = FALSE;
break;
}
if (!ret) pair->effective->module.SymType = SymNone;
assert(pair->effective->module.SymType != SymDeferred);
pair->effective->module.NumSyms = pair->effective->ht_symbols.num_elts;
}
return pair->effective->module.SymType != SymNone;
}
/******************************************************************
* module_get_debug
*
* get the debug information from a module:
* - if the module's type is deferred, then force loading of debug info (and return
* the module itself)
* - if the module has no debug info and has an ELF container, then return the ELF
* container (and also force the ELF container's debug info loading if deferred)
* - otherwise return the module itself if it has some debug info
*/
BOOL module_get_debug(const struct process* pcs, struct module_pair* pair)
{
IMAGEHLP_DEFERRED_SYMBOL_LOAD64 idsl64;
if (!pair->requested) return FALSE;
/* for a PE builtin, always get info from container */
if (!(pair->effective = module_get_container(pcs, pair->requested)))
pair->effective = pair->requested;
/* if deferred, force loading */
if (pair->effective->module.SymType == SymDeferred)
{
BOOL ret;
if (pair->effective->is_virtual) ret = FALSE;
else switch (pair->effective->type)
{
case DMT_ELF:
ret = elf_load_debug_info(pair->effective, NULL);
break;
case DMT_PE:
idsl64.SizeOfStruct = sizeof(idsl64);
idsl64.BaseOfImage = pair->effective->module.BaseOfImage;
idsl64.CheckSum = pair->effective->module.CheckSum;
idsl64.TimeDateStamp = pair->effective->module.TimeDateStamp;
strcpy(idsl64.FileName, pair->effective->module.ImageName);
idsl64.Reparse = FALSE;
idsl64.hFile = INVALID_HANDLE_VALUE;
pcs_callback(pcs, CBA_DEFERRED_SYMBOL_LOAD_START, &idsl64);
ret = pe_load_debug_info(pcs, pair->effective);
pcs_callback(pcs,
ret ? CBA_DEFERRED_SYMBOL_LOAD_COMPLETE : CBA_DEFERRED_SYMBOL_LOAD_FAILURE,
&idsl64);
break;
default:
ret = FALSE;
break;
}
if (!ret) pair->effective->module.SymType = SymNone;
assert(pair->effective->module.SymType != SymDeferred);
module_compute_num_syms(pair->effective);
}
return pair->effective->module.SymType != SymNone;
}
