/******************************************************************
* pe_locate_with_coff_symbol_table
*
* Use the COFF symbol table (if any) from the IMAGE_FILE_HEADER to set the absolute address
* of global symbols.
* Mingw32 requires this for stabs debug information as address for global variables isn't filled in
* (this is similar to what is done in elf_module.c when using the .symtab ELF section)
*/
static BOOL pe_locate_with_coff_symbol_table(struct module* module)
{
struct image_file_map* fmap = &module->format_info[DFI_PE]->u.pe_info->fmap;
const IMAGE_SYMBOL* isym;
int i, numsym, naux;
char tmp[9];
const char* name;
struct hash_table_iter hti;
void* ptr;
struct symt_data* sym;
const char* mapping;
numsym = fmap->u.pe.ntheader.FileHeader.NumberOfSymbols;
if (!fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable || !numsym)
return TRUE;
if (!(mapping = pe_map_full(fmap, NULL))) return FALSE;
isym = (const IMAGE_SYMBOL*)(mapping + fmap->u.pe.ntheader.FileHeader.PointerToSymbolTable);
for (i = 0; i < numsym; i+= naux, isym += naux)
{
if (isym->StorageClass == IMAGE_SYM_CLASS_EXTERNAL &&
isym->SectionNumber > 0 && isym->SectionNumber <= fmap->u.pe.ntheader.FileHeader.NumberOfSections)
{
if (isym->N.Name.Short)
{
name = memcpy(tmp, isym->N.ShortName, 8);
tmp[8] = '\0';
}
else name = fmap->u.pe.strtable + isym->N.Name.Long;
if (name[0] == '_') name++;
hash_table_iter_init(&module->ht_symbols, &hti, name);
while ((ptr = hash_table_iter_up(&hti)))
{
sym = CONTAINING_RECORD(ptr, struct symt_data, hash_elt);
if (sym->symt.tag == SymTagData &&
(sym->kind == DataIsGlobal || sym->kind == DataIsFileStatic) &&
sym->u.var.kind == loc_absolute &&
!strcmp(sym->hash_elt.name, name))
{
TRACE("Changing absolute address for %d.%s: %lx -> %s\n",
isym->SectionNumber, name, sym->u.var.offset,
wine_dbgstr_longlong(module->module.BaseOfImage +
fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress +
isym->Value));
sym->u.var.offset = module->module.BaseOfImage +
fmap->u.pe.sect[isym->SectionNumber - 1].shdr.VirtualAddress + isym->Value;
break;
}
}
}
naux = isym->NumberOfAuxSymbols + 1;
}
pe_unmap_full(fmap);
return TRUE;
}
int module_compute_num_syms(struct module* module)
{
struct hash_table_iter hti;
void* ptr;
module->module.NumSyms = 0;
hash_table_iter_init(&module->ht_symbols, &hti, NULL);
while ((ptr = hash_table_iter_up(&hti)))
module->module.NumSyms++;
return module->module.NumSyms;
}
/******************************************************************
* macho_finish_stabs
*
* Integrate the non-debugging symbols we've gathered into the
* symbols that were generated during stabs parsing.
*/
static void macho_finish_stabs(struct module* module, struct hash_table* ht_symtab)
{
struct hash_table_iter hti_ours;
struct symtab_elt* ste;
BOOL adjusted = FALSE;
TRACE("(%p, %p)\n", module, ht_symtab);
/* For each of our non-debugging symbols, see if it can provide some
* missing details to one of the module's known symbols. */
hash_table_iter_init(ht_symtab, &hti_ours, NULL);
while ((ste = hash_table_iter_up(&hti_ours)))
{
struct hash_table_iter hti_modules;
void* ptr;
struct symt_ht* sym;
struct symt_function* func;
struct symt_data* data;
hash_table_iter_init(&module->ht_symbols, &hti_modules, ste->ht_elt.name);
while ((ptr = hash_table_iter_up(&hti_modules)))
{
sym = GET_ENTRY(ptr, struct symt_ht, hash_elt);
if (strcmp(sym->hash_elt.name, ste->ht_elt.name))
continue;
switch (sym->symt.tag)
{
case SymTagFunction:
func = (struct symt_function*)sym;
if (func->address == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
{
TRACE("Adjusting function %p/%s!%s from 0x%08lx to 0x%08lx\n", func,
debugstr_w(module->module.ModuleName), sym->hash_elt.name,
func->address, ste->addr);
func->address = ste->addr;
adjusted = TRUE;
}
if (func->address == ste->addr)
ste->used = 1;
break;
case SymTagData:
data = (struct symt_data*)sym;
switch (data->kind)
{
case DataIsGlobal:
case DataIsFileStatic:
if (data->u.var.offset == module->format_info[DFI_MACHO]->u.macho_info->load_addr)
{
TRACE("Adjusting data symbol %p/%s!%s from 0x%08lx to 0x%08lx\n",
data, debugstr_w(module->module.ModuleName), sym->hash_elt.name,
data->u.var.offset, ste->addr);
data->u.var.offset = ste->addr;
adjusted = TRUE;
}
if (data->u.var.offset == ste->addr)
{
enum DataKind new_kind;
new_kind = ste->is_global ? DataIsGlobal : DataIsFileStatic;
if (data->kind != new_kind)
{
WARN("Changing kind for %p/%s!%s from %d to %d\n", sym,
debugstr_w(module->module.ModuleName), sym->hash_elt.name,
(int)data->kind, (int)new_kind);
data->kind = new_kind;
adjusted = TRUE;
}
ste->used = 1;
}
break;
default:;
}
break;
default:
TRACE("Ignoring tag %u\n", sym->symt.tag);
break;
}
}
}
if (adjusted)
{
/* since we may have changed some addresses, mark the module to be resorted */
module->sortlist_valid = FALSE;
}
/* Mark any of our non-debugging symbols which fall on an already-used
* address as "used". This allows us to skip them in the next loop,
* below. We do this in separate loops because symt_new_* marks the
* list as needing sorting and symt_find_nearest sorts if needed,
* causing thrashing. */
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY))
{
hash_table_iter_init(ht_symtab, &hti_ours, NULL);
while ((ste = hash_table_iter_up(&hti_ours)))
{
struct symt_ht* sym;
ULONG64 addr;
if (ste->used) continue;
sym = symt_find_nearest(module, ste->addr);
if (sym)
symt_get_address(&sym->symt, &addr);
if (sym && ste->addr == addr)
{
ULONG64 size = 0;
DWORD kind = -1;
ste->used = 1;
/* If neither symbol has a correct size (ours never does), we
* consider them both to be markers. No warning is needed in
* that case.
* Also, we check that we don't have two symbols, one local, the other
* global, which is legal.
*/
symt_get_info(module, &sym->symt, TI_GET_LENGTH, &size);
symt_get_info(module, &sym->symt, TI_GET_DATAKIND, &kind);
if (size && kind == (ste->is_global ? DataIsGlobal : DataIsFileStatic))
FIXME("Duplicate in %s: %s<%08lx> %s<%s-%s>\n",
debugstr_w(module->module.ModuleName),
ste->ht_elt.name, ste->addr,
sym->hash_elt.name,
wine_dbgstr_longlong(addr), wine_dbgstr_longlong(size));
}
}
}
/* For any of our remaining non-debugging symbols which have no match
* among the module's known symbols, add them as new symbols. */
hash_table_iter_init(ht_symtab, &hti_ours, NULL);
while ((ste = hash_table_iter_up(&hti_ours)))
{
if (!(dbghelp_options & SYMOPT_PUBLICS_ONLY) && !ste->used)
{
if (ste->is_code)
{
symt_new_function(module, ste->compiland, ste->ht_elt.name,
ste->addr, 0, NULL);
}
else
{
struct location loc;
loc.kind = loc_absolute;
loc.reg = 0;
loc.offset = ste->addr;
symt_new_global_variable(module, ste->compiland, ste->ht_elt.name,
!ste->is_global, loc, 0, NULL);
}
ste->used = 1;
}
if (ste->is_public && !(dbghelp_options & SYMOPT_NO_PUBLICS))
{
symt_new_public(module, ste->compiland, ste->ht_elt.name, ste->addr, 0);
}
}
}
