/*
* setup_code_signature() does the work to add or update the needed
* LC_CODE_SIGNATURE load command for the specified broken out ofile if it
* is of one of the architecures specifed with a -a command line options.
*/
static
void
setup_code_signature(
struct arch *arch,
struct member *member,
struct object *object)
{
uint32_t i;
cpu_type_t cputype;
cpu_subtype_t cpusubtype;
uint32_t flags, linkedit_end;
uint32_t dyld_info_start;
uint32_t dyld_info_end;
uint32_t align_delta;
linkedit_end = 0;
/*
* First set up all the pointers and sizes of the symbolic info.
*/
if(object->st != NULL && object->st->nsyms != 0) {
if(object->mh != NULL) {
object->output_symbols = (struct nlist *)
(object->object_addr + object->st->symoff);
if(object->object_byte_sex != get_host_byte_sex())
swap_nlist(object->output_symbols,
object->st->nsyms,
get_host_byte_sex());
object->output_symbols64 = NULL;
}
else {
object->output_symbols64 = (struct nlist_64 *)
(object->object_addr + object->st->symoff);
if(object->object_byte_sex != get_host_byte_sex())
swap_nlist_64(object->output_symbols64,
object->st->nsyms,
get_host_byte_sex());
object->output_symbols = NULL;
}
object->output_nsymbols = object->st->nsyms;
object->output_strings =
object->object_addr + object->st->stroff;
object->output_strings_size = object->st->strsize;
if(object->mh != NULL) {
object->input_sym_info_size =
object->st->nsyms * sizeof(struct nlist) +
object->st->strsize;
}
else {
object->input_sym_info_size =
object->st->nsyms * sizeof(struct nlist_64) +
object->st->strsize;
}
}
if(object->dyld_info != NULL) {
/* there are five parts to the dyld info, but
codesign_allocate does not alter them, so copy as a block */
dyld_info_start = 0;
if (object->dyld_info->rebase_off != 0)
dyld_info_start = object->dyld_info->rebase_off;
else if (object->dyld_info->bind_off != 0)
dyld_info_start = object->dyld_info->bind_off;
else if (object->dyld_info->weak_bind_off != 0)
dyld_info_start = object->dyld_info->weak_bind_off;
else if (object->dyld_info->lazy_bind_off != 0)
dyld_info_start = object->dyld_info->lazy_bind_off;
else if (object->dyld_info->export_off != 0)
dyld_info_start = object->dyld_info->export_off;
dyld_info_end = 0;
if (object->dyld_info->export_size != 0)
dyld_info_end = object->dyld_info->export_off
+ object->dyld_info->export_size;
else if (object->dyld_info->lazy_bind_size != 0)
dyld_info_end = object->dyld_info->lazy_bind_off
+ object->dyld_info->lazy_bind_size;
else if (object->dyld_info->weak_bind_size != 0)
dyld_info_end = object->dyld_info->weak_bind_off
+ object->dyld_info->weak_bind_size;
else if (object->dyld_info->bind_size != 0)
dyld_info_end = object->dyld_info->bind_off
+ object->dyld_info->bind_size;
else if (object->dyld_info->rebase_size != 0)
dyld_info_end = object->dyld_info->rebase_off
+ object->dyld_info->rebase_size;
object->output_dyld_info = object->object_addr + dyld_info_start;
object->output_dyld_info_size = dyld_info_end - dyld_info_start;
object->output_sym_info_size += object->output_dyld_info_size;
}
if(object->dyst != NULL) {
object->output_ilocalsym = object->dyst->ilocalsym;
object->output_nlocalsym = object->dyst->nlocalsym;
object->output_iextdefsym = object->dyst->iextdefsym;
object->output_nextdefsym = object->dyst->nextdefsym;
object->output_iundefsym = object->dyst->iundefsym;
object->output_nundefsym = object->dyst->nundefsym;
object->output_indirect_symtab = (uint32_t *)
(object->object_addr + object->dyst->indirectsymoff);
object->output_loc_relocs = (struct relocation_info *)
(object->object_addr + object->dyst->locreloff);
if(object->split_info_cmd != NULL) {
object->output_split_info_data =
(object->object_addr + object->split_info_cmd->dataoff);
object->output_split_info_data_size =
object->split_info_cmd->datasize;
}
if(object->func_starts_info_cmd != NULL) {
object->output_func_start_info_data =
(object->object_addr + object->func_starts_info_cmd->dataoff);
object->output_func_start_info_data_size =
object->func_starts_info_cmd->datasize;
}
if(object->data_in_code_cmd != NULL) {
object->output_data_in_code_info_data =
(object->object_addr + object->data_in_code_cmd->dataoff);
object->output_data_in_code_info_data_size =
object->data_in_code_cmd->datasize;
}
if(object->code_sign_drs_cmd != NULL) {
object->output_code_sign_drs_info_data =
(object->object_addr + object->code_sign_drs_cmd->dataoff);
object->output_code_sign_drs_info_data_size =
object->code_sign_drs_cmd->datasize;
}
if(object->link_opt_hint_cmd != NULL) {
object->output_link_opt_hint_info_data =
(object->object_addr + object->link_opt_hint_cmd->dataoff);
object->output_link_opt_hint_info_data_size =
object->link_opt_hint_cmd->datasize;
}
object->output_ext_relocs = (struct relocation_info *)
(object->object_addr + object->dyst->extreloff);
object->output_tocs =
(struct dylib_table_of_contents *)
(object->object_addr + object->dyst->tocoff);
object->output_ntoc = object->dyst->ntoc;
if(object->mh != NULL) {
object->output_mods = (struct dylib_module *)
(object->object_addr + object->dyst->modtaboff);
object->output_mods64 = NULL;
}
else {
object->output_mods64 = (struct dylib_module_64 *)
(object->object_addr + object->dyst->modtaboff);
object->output_mods = NULL;
}
object->output_nmodtab = object->dyst->nmodtab;
object->output_refs = (struct dylib_reference *)
(object->object_addr + object->dyst->extrefsymoff);
object->output_nextrefsyms = object->dyst->nextrefsyms;
if(object->hints_cmd != NULL) {
object->output_hints = (struct twolevel_hint *)
(object->object_addr +
object->hints_cmd->offset);
}
if(object->dyld_info != NULL) {
object->input_sym_info_size += object->dyld_info->rebase_size
+ object->dyld_info->bind_size
+ object->dyld_info->weak_bind_size
+ object->dyld_info->lazy_bind_size
+ object->dyld_info->export_size;
}
object->input_sym_info_size +=
object->dyst->nlocrel *
sizeof(struct relocation_info) +
object->dyst->nextrel *
sizeof(struct relocation_info) +
object->dyst->ntoc *
sizeof(struct dylib_table_of_contents)+
object->dyst->nextrefsyms *
sizeof(struct dylib_reference);
if(object->split_info_cmd != NULL)
object->input_sym_info_size += object->split_info_cmd->datasize;
if(object->func_starts_info_cmd != NULL)
object->input_sym_info_size +=
object->func_starts_info_cmd->datasize;
if(object->data_in_code_cmd != NULL)
object->input_sym_info_size +=
object->data_in_code_cmd->datasize;
if(object->code_sign_drs_cmd != NULL)
object->input_sym_info_size +=
object->code_sign_drs_cmd->datasize;
if(object->link_opt_hint_cmd != NULL)
object->input_sym_info_size +=
object->link_opt_hint_cmd->datasize;
if(object->mh != NULL) {
object->input_sym_info_size +=
object->dyst->nmodtab *
sizeof(struct dylib_module) +
object->dyst->nindirectsyms *
sizeof(uint32_t);
}
else {
object->input_sym_info_size +=
object->dyst->nmodtab *
sizeof(struct dylib_module_64) +
object->dyst->nindirectsyms *
sizeof(uint32_t) +
object->input_indirectsym_pad;
}
if(object->hints_cmd != NULL) {
object->input_sym_info_size +=
object->hints_cmd->nhints *
sizeof(struct twolevel_hint);
}
}
object->output_sym_info_size = object->input_sym_info_size;
if(object->code_sig_cmd != NULL) {
object->input_sym_info_size = rnd(object->input_sym_info_size,
16);
object->input_sym_info_size += object->code_sig_cmd->datasize;
}
/*
* Now see if one of the -a flags matches this object.
*/
if(object->mh != NULL) {
cputype = object->mh->cputype;
cpusubtype = object->mh->cpusubtype & ~CPU_SUBTYPE_MASK;
flags = object->mh->flags;
}
else {
cputype = object->mh64->cputype;
cpusubtype = object->mh64->cpusubtype & ~CPU_SUBTYPE_MASK;
flags = object->mh64->flags;
}
for(i = 0; i < narch_signs; i++) {
if(arch_signs[i].arch_flag.cputype == cputype &&
arch_signs[i].arch_flag.cpusubtype == cpusubtype)
break;
}
/*
* If we didn't find a matching -a flag then just use the existing
* code signature if any.
*/
if(i >= narch_signs) {
if(object->code_sig_cmd != NULL) {
object->output_code_sig_data_size =
object->code_sig_cmd->datasize;
}
object->output_sym_info_size = object->input_sym_info_size;
return;
}
/*
* We did find a matching -a flag for this object
*/
arch_signs[i].found = TRUE;
/*
* We now allow statically linked objects as well as objects that are
* input for the dynamic linker or an MH_OBJECT filetypes to have
* code signatures. So no checks are done here anymore based on the
* flags or filetype in the mach_header.
*/
/*
* If this has a code signature load command reuse it and just change
* the size of that data. But do not use the old data.
*/
if(object->code_sig_cmd != NULL) {
if(object->seg_linkedit != NULL) {
object->seg_linkedit->filesize +=
arch_signs[i].datasize - object->code_sig_cmd->datasize;
if(object->seg_linkedit->filesize >
object->seg_linkedit->vmsize)
object->seg_linkedit->vmsize =
rnd(object->seg_linkedit->filesize,
get_segalign_from_flag(&arch_signs[i].arch_flag));
}
else if(object->seg_linkedit64 != NULL) {
object->seg_linkedit64->filesize +=
arch_signs[i].datasize;
object->seg_linkedit64->filesize -=
object->code_sig_cmd->datasize;
if(object->seg_linkedit64->filesize >
object->seg_linkedit64->vmsize)
object->seg_linkedit64->vmsize =
rnd(object->seg_linkedit64->filesize,
get_segalign_from_flag(&arch_signs[i].arch_flag));
}
object->code_sig_cmd->datasize = arch_signs[i].datasize;
object->output_code_sig_data_size = arch_signs[i].datasize;
object->output_code_sig_data = NULL;
object->output_sym_info_size = rnd(object->output_sym_info_size,
16);
object->output_sym_info_size += object->code_sig_cmd->datasize;
}
/*
* The object does not have a code signature load command we add one.
* And if that does not fail we then set the new load command's size and
* offset of the code signature data to allocate in the object. We also
* adjust the linkedit's segment size.
*/
else {
object->code_sig_cmd = add_code_sig_load_command(arch,
arch_signs[i].arch_flag.name);
object->code_sig_cmd->datasize = arch_signs[i].datasize;
if(object->seg_linkedit != NULL)
linkedit_end = object->seg_linkedit->fileoff +
object->seg_linkedit->filesize;
else if(object->seg_linkedit64 != NULL)
linkedit_end = object->seg_linkedit64->fileoff +
object->seg_linkedit64->filesize;
else if(object->mh_filetype == MH_OBJECT)
linkedit_end = object->object_size;
else
fatal("can't allocate code signature data for: %s (for "
"architecture %s) because file does not have a "
SEG_LINKEDIT " segment", arch->file_name,
arch_signs[i].arch_flag.name);
object->code_sig_cmd->dataoff = rnd(linkedit_end, 16);
object->output_code_sig_data_size = arch_signs[i].datasize;
object->output_code_sig_data = NULL;
align_delta = object->code_sig_cmd->dataoff - linkedit_end;
if(object->output_sym_info_size != 0)
object->output_sym_info_size = rnd(object->output_sym_info_size,
16);
else
object->output_sym_info_size = align_delta;
object->output_sym_info_size += object->code_sig_cmd->datasize;
if(object->seg_linkedit != NULL) {
object->seg_linkedit->filesize =
rnd(object->seg_linkedit->filesize, 16) +
object->code_sig_cmd->datasize;
if(object->seg_linkedit->filesize >
object->seg_linkedit->vmsize)
object->seg_linkedit->vmsize =
rnd(object->seg_linkedit->filesize,
get_segalign_from_flag(&arch_signs[i].arch_flag));
}
else if(object->seg_linkedit64 != NULL) {
object->seg_linkedit64->filesize =
rnd(object->seg_linkedit64->filesize, 16) +
object->code_sig_cmd->datasize;
if(object->seg_linkedit64->filesize >
object->seg_linkedit64->vmsize)
object->seg_linkedit64->vmsize =
rnd(object->seg_linkedit64->filesize,
get_segalign_from_flag(&arch_signs[i].arch_flag));
}
}
}
static
void
setup_object_symbolic_info(
struct object *object)
{
uint32_t output_indirectsym_pad_diff;
if(object->st != NULL && object->st->nsyms != 0){
if(object->mh != NULL){
object->output_symbols = (struct nlist *)
(object->object_addr + object->st->symoff);
if(object->object_byte_sex != get_host_byte_sex())
swap_nlist(object->output_symbols,
object->st->nsyms,
get_host_byte_sex());
object->output_symbols64 = NULL;
}
else{
object->output_symbols64 = (struct nlist_64 *)
(object->object_addr + object->st->symoff);
if(object->object_byte_sex != get_host_byte_sex())
swap_nlist_64(object->output_symbols64,
object->st->nsyms,
get_host_byte_sex());
object->output_symbols = NULL;
}
object->output_nsymbols = object->st->nsyms;
object->output_strings =
object->object_addr + object->st->stroff;
object->output_strings_size = object->st->strsize;
if(object->mh != NULL){
object->input_sym_info_size =
object->st->nsyms * sizeof(struct nlist) +
object->st->strsize;
}
else{
object->input_sym_info_size =
object->st->nsyms * sizeof(struct nlist_64) +
object->st->strsize;
}
}
output_indirectsym_pad_diff = 0;
if(object->dyst != NULL){
object->output_ilocalsym = object->dyst->ilocalsym;
object->output_nlocalsym = object->dyst->nlocalsym;
object->output_iextdefsym = object->dyst->iextdefsym;
object->output_nextdefsym = object->dyst->nextdefsym;
object->output_iundefsym = object->dyst->iundefsym;
object->output_nundefsym = object->dyst->nundefsym;
object->output_indirect_symtab = (uint32_t *)
(object->object_addr + object->dyst->indirectsymoff);
object->output_loc_relocs = (struct relocation_info *)
(object->object_addr + object->dyst->locreloff);
if(object->split_info_cmd != NULL){
object->output_split_info_data =
(object->object_addr + object->split_info_cmd->dataoff);
object->output_split_info_data_size =
object->split_info_cmd->datasize;
}
if(object->func_starts_info_cmd != NULL){
object->output_func_start_info_data =
(object->object_addr + object->func_starts_info_cmd->dataoff);
object->output_func_start_info_data_size =
object->func_starts_info_cmd->datasize;
}
if(object->data_in_code_cmd != NULL){
object->output_data_in_code_info_data =
(object->object_addr + object->data_in_code_cmd->dataoff);
object->output_data_in_code_info_data_size =
object->data_in_code_cmd->datasize;
}
if(object->code_sign_drs_cmd != NULL){
object->output_code_sign_drs_info_data =
(object->object_addr + object->code_sign_drs_cmd->dataoff);
object->output_code_sign_drs_info_data_size =
object->code_sign_drs_cmd->datasize;
}
if(object->link_opt_hint_cmd != NULL){
object->output_link_opt_hint_info_data =
(object->object_addr + object->link_opt_hint_cmd->dataoff);
object->output_link_opt_hint_info_data_size =
object->link_opt_hint_cmd->datasize;
}
object->output_ext_relocs = (struct relocation_info *)
(object->object_addr + object->dyst->extreloff);
object->output_tocs =
(struct dylib_table_of_contents *)
(object->object_addr + object->dyst->tocoff);
object->output_ntoc = object->dyst->ntoc;
if(object->mh != NULL){
object->output_mods = (struct dylib_module *)
(object->object_addr + object->dyst->modtaboff);
object->output_mods64 = NULL;
}
else{
object->output_mods64 = (struct dylib_module_64 *)
(object->object_addr + object->dyst->modtaboff);
object->output_mods = NULL;
}
object->output_nmodtab = object->dyst->nmodtab;
object->output_refs = (struct dylib_reference *)
(object->object_addr + object->dyst->extrefsymoff);
object->output_nextrefsyms = object->dyst->nextrefsyms;
if(object->hints_cmd != NULL){
object->output_hints = (struct twolevel_hint *)
(object->object_addr +
object->hints_cmd->offset);
}
if(object->code_sig_cmd != NULL){
object->output_code_sig_data = object->object_addr +
object->code_sig_cmd->dataoff;
object->output_code_sig_data_size =
object->code_sig_cmd->datasize;
}
object->input_sym_info_size +=
object->dyst->nlocrel *
sizeof(struct relocation_info) +
object->dyst->nextrel *
sizeof(struct relocation_info) +
object->dyst->ntoc *
sizeof(struct dylib_table_of_contents)+
object->dyst->nextrefsyms *
sizeof(struct dylib_reference);
if(object->split_info_cmd != NULL)
object->input_sym_info_size += object->split_info_cmd->datasize;
if(object->func_starts_info_cmd != NULL)
object->input_sym_info_size +=
object->func_starts_info_cmd->datasize;
if(object->data_in_code_cmd != NULL)
object->input_sym_info_size +=
object->data_in_code_cmd->datasize;
if(object->code_sign_drs_cmd != NULL)
object->input_sym_info_size +=
object->code_sign_drs_cmd->datasize;
if(object->link_opt_hint_cmd != NULL)
object->input_sym_info_size +=
object->link_opt_hint_cmd->datasize;
if(object->mh != NULL){
object->input_sym_info_size +=
object->dyst->nmodtab *
sizeof(struct dylib_module) +
object->dyst->nindirectsyms *
sizeof(uint32_t);
}
else{
object->input_sym_info_size +=
object->dyst->nmodtab *
sizeof(struct dylib_module_64)+
object->dyst->nindirectsyms *
sizeof(uint32_t) +
object->input_indirectsym_pad;
if(object->input_indirectsym_pad == 0 &&
(object->dyst->nindirectsyms % 2) != 0)
output_indirectsym_pad_diff = 4;
}
if(object->hints_cmd != NULL){
object->input_sym_info_size +=
object->hints_cmd->nhints *
sizeof(struct twolevel_hint);
}
if(object->code_sig_cmd != NULL){
object->input_sym_info_size = rnd(object->input_sym_info_size,
16);
object->input_sym_info_size += object->code_sig_cmd->datasize;
}
if(output_indirectsym_pad_diff != 0){
if(object->output_ntoc != 0)
object->dyst->tocoff += output_indirectsym_pad_diff;
if(object->output_nmodtab != 0)
object->dyst->modtaboff += output_indirectsym_pad_diff;
if(object->output_nextrefsyms != 0)
object->dyst->extrefsymoff += output_indirectsym_pad_diff;
if(object->output_strings_size != 0)
object->st->stroff += output_indirectsym_pad_diff;
object->seg_linkedit64->filesize += output_indirectsym_pad_diff;
if(object->seg_linkedit64->filesize >
object->seg_linkedit64->vmsize)
object->seg_linkedit64->vmsize +=
output_indirectsym_pad_diff;
}
}
object->output_sym_info_size =
object->input_sym_info_size + output_indirectsym_pad_diff;
}
int main(int argc, char * argv[])
{
ToolError err;
int i, fd;
const char * output_name = NULL;
uint32_t zero = 0, num_files = 0;
uint32_t filenum;
uint32_t strx, strtabsize, strtabpad;
struct symbol * import_symbols;
struct symbol * export_symbols;
uint32_t num_import_syms, num_export_syms;
uint32_t result_count, num_removed_syms;
uint32_t import_idx, export_idx;
const NXArchInfo * host_arch;
const NXArchInfo * target_arch;
boolean_t require_imports = true;
boolean_t diff = false;
struct file {
vm_offset_t mapped;
vm_size_t mapped_size;
uint32_t nsyms;
boolean_t import;
const char * path;
};
struct file files[64];
host_arch = NXGetLocalArchInfo();
target_arch = host_arch;
for( i = 1; i < argc; i += 2)
{
boolean_t import;
if (!strcmp("-sect", argv[i]))
{
require_imports = false;
i--;
continue;
}
if (!strcmp("-diff", argv[i]))
{
require_imports = false;
diff = true;
i--;
continue;
}
if (i == (argc - 1))
{
fprintf(stderr, "bad arguments: %s\n", argv[i]);
exit(1);
}
if (!strcmp("-arch", argv[i]))
{
target_arch = DL_NXGetArchInfoFromName(argv[i + 1]);
if (!target_arch)
{
fprintf(stderr, "unknown architecture name: %s\n", argv[i+1]);
exit(1);
}
continue;
}
if (!strcmp("-output", argv[i]))
{
output_name = argv[i+1];
continue;
}
if (!strcmp("-import", argv[i]))
import = true;
else if (!strcmp("-export", argv[i]))
import = false;
else
{
fprintf(stderr, "unknown option: %s\n", argv[i]);
exit(1);
}
err = readFile(argv[i+1], &files[num_files].mapped, &files[num_files].mapped_size);
if (kErrorNone != err)
exit(1);
if (files[num_files].mapped && files[num_files].mapped_size)
{
files[num_files].import = import;
files[num_files].path = argv[i+1];
num_files++;
}
}
if (!output_name)
{
fprintf(stderr, "no output file\n");
exit(1);
}
num_import_syms = 0;
num_export_syms = 0;
for (filenum = 0; filenum < num_files; filenum++)
{
files[filenum].nsyms = count_symbols((char *) files[filenum].mapped, files[filenum].mapped_size);
if (files[filenum].import)
num_import_syms += files[filenum].nsyms;
else
num_export_syms += files[filenum].nsyms;
}
if (!num_export_syms)
{
fprintf(stderr, "no export names\n");
exit(1);
}
import_symbols = calloc(num_import_syms, sizeof(struct symbol));
export_symbols = calloc(num_export_syms, sizeof(struct symbol));
import_idx = 0;
export_idx = 0;
for (filenum = 0; filenum < num_files; filenum++)
{
if (files[filenum].import)
{
store_symbols((char *) files[filenum].mapped, files[filenum].mapped_size,
import_symbols, import_idx, num_import_syms);
import_idx += files[filenum].nsyms;
}
else
{
store_symbols((char *) files[filenum].mapped, files[filenum].mapped_size,
export_symbols, export_idx, num_export_syms);
export_idx += files[filenum].nsyms;
}
if (false && !files[filenum].nsyms)
{
fprintf(stderr, "warning: file %s contains no names\n", files[filenum].path);
}
}
qsort(import_symbols, num_import_syms, sizeof(struct symbol), &qsort_cmp);
qsort(export_symbols, num_export_syms, sizeof(struct symbol), &qsort_cmp);
result_count = 0;
num_removed_syms = 0;
strtabsize = 4;
if (num_import_syms)
{
for (export_idx = 0; export_idx < num_export_syms; export_idx++)
{
struct symbol * result;
char * name;
size_t len;
boolean_t wild;
name = export_symbols[export_idx].indirect;
len = export_symbols[export_idx].indirect_len;
if (!name)
{
name = export_symbols[export_idx].name;
len = export_symbols[export_idx].name_len;
}
wild = ((len > 2) && ('*' == name[len-=2]));
if (wild)
{
struct bsearch_key key;
key.name = name;
key.name_len = len;
result = bsearch(&key, import_symbols,
num_import_syms, sizeof(struct symbol), &bsearch_cmp_prefix);
if (result)
{
struct symbol * first;
struct symbol * last;
strtabsize += (result->name_len + result->indirect_len);
first = result;
while (--first >= &import_symbols[0])
{
if (bsearch_cmp_prefix(&key, first))
break;
strtabsize += (first->name_len + first->indirect_len);
}
first++;
last = result;
while (++last < (&import_symbols[0] + num_import_syms))
{
if (bsearch_cmp_prefix(&key, last))
break;
strtabsize += (last->name_len + last->indirect_len);
}
result_count += last - first;
result = first;
export_symbols[export_idx].list = first;
export_symbols[export_idx].list_count = last - first;
export_symbols[export_idx].flags |= kExported;
}
}
else
result = bsearch(name, import_symbols,
num_import_syms, sizeof(struct symbol), &bsearch_cmp);
if (!result && require_imports)
{
int status;
char * demangled_result =
__cxa_demangle(export_symbols[export_idx].name + 1, NULL, NULL, &status);
fprintf(stderr, "exported name not in import list: %s\n",
demangled_result ? demangled_result : export_symbols[export_idx].name);
// fprintf(stderr, " : %s\n", export_symbols[export_idx].name);
if (demangled_result) {
free(demangled_result);
}
num_removed_syms++;
}
if (diff)
{
if (!result)
result = &export_symbols[export_idx];
else
result = NULL;
}
if (result && !wild)
{
export_symbols[export_idx].flags |= kExported;
strtabsize += (export_symbols[export_idx].name_len + export_symbols[export_idx].indirect_len);
result_count++;
export_symbols[export_idx].list = &export_symbols[export_idx];
export_symbols[export_idx].list_count = 1;
}
}
}
strtabpad = (strtabsize + 3) & ~3;
if (require_imports && num_removed_syms)
{
err = kError;
goto finish;
}
fd = open(output_name, O_WRONLY|O_CREAT|O_TRUNC, 0755);
if (-1 == fd)
{
perror("couldn't write output");
err = kErrorFileAccess;
goto finish;
}
struct symtab_command symcmd;
struct uuid_command uuidcmd;
symcmd.cmd = LC_SYMTAB;
symcmd.cmdsize = sizeof(symcmd);
symcmd.symoff = sizeof(symcmd) + sizeof(uuidcmd);
symcmd.nsyms = result_count;
symcmd.strsize = strtabpad;
uuidcmd.cmd = LC_UUID;
uuidcmd.cmdsize = sizeof(uuidcmd);
uuid_generate(uuidcmd.uuid);
if (CPU_ARCH_ABI64 & target_arch->cputype)
{
struct mach_header_64 hdr;
hdr.magic = MH_MAGIC_64;
hdr.cputype = target_arch->cputype;
hdr.cpusubtype = target_arch->cpusubtype;
hdr.filetype = MH_KEXT_BUNDLE;
hdr.ncmds = 2;
hdr.sizeofcmds = sizeof(symcmd) + sizeof(uuidcmd);
hdr.flags = MH_INCRLINK;
symcmd.symoff += sizeof(hdr);
symcmd.stroff = result_count * sizeof(struct nlist_64)
+ symcmd.symoff;
if (target_arch->byteorder != host_arch->byteorder)
swap_mach_header_64(&hdr, target_arch->byteorder);
err = writeFile(fd, &hdr, sizeof(hdr));
}
else
{
struct mach_header hdr;
hdr.magic = MH_MAGIC;
hdr.cputype = target_arch->cputype;
hdr.cpusubtype = target_arch->cpusubtype;
hdr.filetype = (target_arch->cputype == CPU_TYPE_I386) ? MH_OBJECT : MH_KEXT_BUNDLE;
hdr.ncmds = 2;
hdr.sizeofcmds = sizeof(symcmd) + sizeof(uuidcmd);
hdr.flags = MH_INCRLINK;
symcmd.symoff += sizeof(hdr);
symcmd.stroff = result_count * sizeof(struct nlist)
+ symcmd.symoff;
if (target_arch->byteorder != host_arch->byteorder)
swap_mach_header(&hdr, target_arch->byteorder);
err = writeFile(fd, &hdr, sizeof(hdr));
}
if (kErrorNone != err)
goto finish;
if (target_arch->byteorder != host_arch->byteorder) {
swap_symtab_command(&symcmd, target_arch->byteorder);
swap_uuid_command(&uuidcmd, target_arch->byteorder);
}
err = writeFile(fd, &symcmd, sizeof(symcmd));
if (kErrorNone != err)
goto finish;
err = writeFile(fd, &uuidcmd, sizeof(uuidcmd));
if (kErrorNone != err)
goto finish;
strx = 4;
for (export_idx = 0; export_idx < num_export_syms; export_idx++)
{
if (!export_symbols[export_idx].name)
continue;
if (!(kExported & export_symbols[export_idx].flags))
continue;
if (export_idx
&& export_symbols[export_idx - 1].name
&& !strcmp(export_symbols[export_idx - 1].name, export_symbols[export_idx].name))
{
fprintf(stderr, "duplicate export: %s\n", export_symbols[export_idx - 1].name);
err = kErrorDuplicate;
goto finish;
}
for (import_idx = 0; import_idx < export_symbols[export_idx].list_count; import_idx++)
{
if (export_symbols[export_idx].list != &export_symbols[export_idx])
{
printf("wild: %s, %s\n", export_symbols[export_idx].name,
export_symbols[export_idx].list[import_idx].name);
}
if (CPU_ARCH_ABI64 & target_arch->cputype)
{
struct nlist_64 nl;
nl.n_sect = 0;
nl.n_desc = 0;
nl.n_un.n_strx = strx;
strx += export_symbols[export_idx].list[import_idx].name_len;
if (export_symbols[export_idx].flags & kObsolete) {
nl.n_desc |= N_DESC_DISCARDED;
}
if (export_symbols[export_idx].list[import_idx].indirect)
{
nl.n_type = N_INDR | N_EXT;
nl.n_value = strx;
strx += export_symbols[export_idx].list[import_idx].indirect_len;
}
else
{
nl.n_type = N_UNDF | N_EXT;
nl.n_value = 0;
}
if (target_arch->byteorder != host_arch->byteorder)
swap_nlist_64(&nl, 1, target_arch->byteorder);
err = writeFile(fd, &nl, sizeof(nl));
}
else
{
struct nlist nl;
nl.n_sect = 0;
nl.n_desc = 0;
nl.n_un.n_strx = strx;
strx += export_symbols[export_idx].list[import_idx].name_len;
if (export_symbols[export_idx].flags & kObsolete) {
nl.n_desc |= N_DESC_DISCARDED;
}
if (export_symbols[export_idx].list[import_idx].indirect)
{
nl.n_type = N_INDR | N_EXT;
nl.n_value = strx;
strx += export_symbols[export_idx].list[import_idx].indirect_len;
}
else
{
nl.n_type = N_UNDF | N_EXT;
nl.n_value = 0;
}
if (target_arch->byteorder != host_arch->byteorder)
swap_nlist(&nl, 1, target_arch->byteorder);
err = writeFile(fd, &nl, sizeof(nl));
}
}
if (kErrorNone != err)
goto finish;
}
strx = sizeof(uint32_t);
err = writeFile(fd, &zero, strx);
if (kErrorNone != err)
goto finish;
for (export_idx = 0; export_idx < num_export_syms; export_idx++)
{
if (!export_symbols[export_idx].name)
continue;
for (import_idx = 0; import_idx < export_symbols[export_idx].list_count; import_idx++)
{
err = writeFile(fd, export_symbols[export_idx].list[import_idx].name,
export_symbols[export_idx].list[import_idx].name_len);
if (kErrorNone != err)
goto finish;
if (export_symbols[export_idx].list[import_idx].indirect)
{
err = writeFile(fd, export_symbols[export_idx].list[import_idx].indirect,
export_symbols[export_idx].list[import_idx].indirect_len);
if (kErrorNone != err)
goto finish;
}
}
}
err = writeFile(fd, &zero, strtabpad - strtabsize);
if (kErrorNone != err)
goto finish;
close(fd);
finish:
for (filenum = 0; filenum < num_files; filenum++) {
// unmap file
if (files[filenum].mapped_size)
{
munmap((caddr_t)files[filenum].mapped, files[filenum].mapped_size);
files[filenum].mapped = 0;
files[filenum].mapped_size = 0;
}
}
if (kErrorNone != err)
{
if (output_name)
unlink(output_name);
exit(1);
}
else
exit(0);
return(0);
}
/*
* ctf_insert() does the work to add the ctf section in the specified broken
* out ofile for the architecure specifed with a -arch command line option.
*/
static
void
ctf_insert(
struct arch *arch,
struct member *member,
struct object *object)
{
uint32_t i, move_size;
cpu_type_t cputype;
cpu_subtype_t cpusubtype;
uint32_t flags, offset;
uint64_t addr;
if(object->mh != NULL){
cputype = object->mh->cputype;
cpusubtype = object->mh->cpusubtype & ~CPU_SUBTYPE_MASK;
flags = object->mh->flags;
offset = object->seg_linkedit->fileoff;
addr = object->seg_linkedit->vmaddr;
}
else{
cputype = object->mh64->cputype;
cpusubtype = object->mh64->cpusubtype & ~CPU_SUBTYPE_MASK;
flags = object->mh64->flags;
offset = object->seg_linkedit64->fileoff;
addr = object->seg_linkedit64->vmaddr;
}
/*
* Make sure this object is valid to process. Since the input should
* be a mach_kernel that is statically linked we should not see any
* dynamic symbol table info. Or a code signature at the point this
* program is called in the build process.
*/
if((flags & MH_DYLDLINK) == MH_DYLDLINK ||
object->dyld_info != NULL ||
object->split_info_cmd != NULL ||
object->hints_cmd != NULL)
fatal_arch(arch, member, "file is input for the dynamic linker so "
"not a valid input for this program to process: ");
/*
* Allow a dynamic symbol table load command where it only has an
* indirect symbol table and no other tables.
*/
if(object->dyst != NULL &&
(object->dyst->ntoc != 0 ||
object->dyst->nmodtab != 0 ||
object->dyst->nmodtab != 0 ||
object->dyst->nextrefsyms != 0 ||
object->dyst->nextrel != 0))
fatal_arch(arch, member, "file is input for the dynamic linker so "
"not a valid input for this program to process: ");
if(object->mh_filetype != MH_EXECUTE)
fatal_arch(arch, member, "file type is not MH_EXECUTE so "
"not a valid input for this program to process: ");
if(object->seg_linkedit == NULL && object->seg_linkedit64 == NULL)
fatal_arch(arch, member, "file type does not have a __LINKEDIT "
"segment so not a valid input for this program to "
"process: ");
if(object->code_sig_cmd != NULL)
fatal_arch(arch, member, "file type has code signature "
"so not a valid input for this program to process: ");
/*
* Now see if one of the -arch flags matches this object.
*/
for(i = 0; i < narch_ctfs; i++){
if(arch_ctfs[i].arch_flag.cputype == cputype &&
arch_ctfs[i].arch_flag.cpusubtype == cpusubtype)
break;
}
/*
* If we didn't find a matching -arch flag it is an error.
*/
if(i >= narch_ctfs){
fatal_arch(arch, member, "no matching -arch option for this slice "
"of file: ");
return;
}
arch_ctfs[i].arch_found = TRUE;
/*
* Add the section for the ctf data for this arch. It is placed in
* the file where the linkedit info was and that info will then be
* moved.
*/
add_ctf_section(arch, arch_ctfs[i].arch_flag.name,
offset, addr, arch_ctfs[i].size);
/*
* Now set up all the pointers and sizes of the symbol and string table.
*/
if(object->st != NULL && object->st->nsyms != 0){
if(object->mh != NULL){
object->output_symbols = (struct nlist *)
(object->object_addr + object->st->symoff);
if(object->object_byte_sex != get_host_byte_sex())
swap_nlist(object->output_symbols,
object->st->nsyms,
get_host_byte_sex());
object->output_symbols64 = NULL;
}
else{
object->output_symbols64 = (struct nlist_64 *)
(object->object_addr + object->st->symoff);
if(object->object_byte_sex != get_host_byte_sex())
swap_nlist_64(object->output_symbols64,
object->st->nsyms,
get_host_byte_sex());
object->output_symbols = NULL;
}
object->output_nsymbols = object->st->nsyms;
object->output_strings =
object->object_addr + object->st->stroff;
object->output_strings_size = object->st->strsize;
if(object->mh != NULL){
object->input_sym_info_size =
object->st->nsyms * sizeof(struct nlist) +
object->st->strsize;
}
else{
object->input_sym_info_size =
object->st->nsyms * sizeof(struct nlist_64) +
object->st->strsize;
}
}
if(object->dyst != NULL){
object->output_ilocalsym = object->dyst->ilocalsym;
object->output_nlocalsym = object->dyst->nlocalsym;
object->output_iextdefsym = object->dyst->iextdefsym;
object->output_nextdefsym = object->dyst->nextdefsym;
object->output_iundefsym = object->dyst->iundefsym;
object->output_nundefsym = object->dyst->nundefsym;
object->output_indirect_symtab = (uint32_t *)
(object->object_addr + object->dyst->indirectsymoff);
object->output_loc_relocs = (struct relocation_info *)
(object->object_addr + object->dyst->locreloff);
if(object->mh != NULL){
object->input_sym_info_size +=
object->dyst->nindirectsyms *
sizeof(uint32_t);
}
else{
object->input_sym_info_size +=
object->dyst->nindirectsyms *
sizeof(uint32_t) +
object->input_indirectsym_pad;
}
object->input_sym_info_size +=
object->dyst->nlocrel *
sizeof(struct relocation_info);
}
if(object->func_starts_info_cmd != NULL){
object->output_func_start_info_data = object->object_addr +
object->func_starts_info_cmd->dataoff;
object->output_func_start_info_data_size =
object->func_starts_info_cmd->datasize;
object->input_sym_info_size +=
object->func_starts_info_cmd->datasize;
}
if(object->data_in_code_cmd != NULL){
object->output_data_in_code_info_data = object->object_addr +
object->data_in_code_cmd->dataoff;
object->output_data_in_code_info_data_size =
object->data_in_code_cmd->datasize;
object->input_sym_info_size +=
object->data_in_code_cmd->datasize;
}
if(object->code_sign_drs_cmd != NULL){
object->output_code_sign_drs_info_data = object->object_addr +
object->code_sign_drs_cmd->dataoff;
object->output_code_sign_drs_info_data_size =
object->code_sign_drs_cmd->datasize;
object->input_sym_info_size +=
object->code_sign_drs_cmd->datasize;
}
if(object->link_opt_hint_cmd != NULL){
object->output_link_opt_hint_info_data = object->object_addr +
object->link_opt_hint_cmd->dataoff;
object->output_link_opt_hint_info_data_size =
object->link_opt_hint_cmd->datasize;
object->input_sym_info_size +=
object->link_opt_hint_cmd->datasize;
}
object->output_sym_info_size = object->input_sym_info_size;
/*
* Now move the link edit info by the size of the ctf for this arch
* rounded to the load command size for this arch.
*/
if(object->mh != NULL){
move_size = rnd(arch_ctfs[i].size, sizeof(uint32_t));
object->seg_linkedit->fileoff += move_size;
}
else{
move_size = rnd(arch_ctfs[i].size, sizeof(uint64_t));
object->seg_linkedit64->fileoff += move_size;
}
if(object->st != NULL && object->st->nsyms != 0){
object->st->symoff += move_size;
object->st->stroff += move_size;
}
if(object->dyst != NULL){
if(object->dyst->nindirectsyms != 0)
object->dyst->indirectsymoff += move_size;
if(object->dyst->nlocrel != 0)
object->dyst->locreloff += move_size;
}
if(object->func_starts_info_cmd != NULL)
object->func_starts_info_cmd->dataoff += move_size;
if(object->data_in_code_cmd != NULL)
object->data_in_code_cmd->dataoff += move_size;
if(object->code_sign_drs_cmd != NULL)
object->code_sign_drs_cmd->dataoff += move_size;
if(object->link_opt_hint_cmd != NULL)
object->link_opt_hint_cmd->dataoff += move_size;
/*
* Record the new content for writeout() to put in to the output file.
*/
object->output_new_content = arch_ctfs[i].contents;
object->output_new_content_size = move_size;
}
static int register_mach_header(const char* build, const char* project, const char* path, struct fat_arch* fa, int fd, int* isMachO) {
ssize_t res;
uint32_t magic;
int swap = 0;
struct mach_header* mh = NULL;
struct mach_header_64* mh64 = NULL;
if (isMachO) *isMachO = 0;
res = read(fd, &magic, sizeof(uint32_t));
if (res < sizeof(uint32_t)) { return 0; }
//
// 32-bit, read the rest of the header
//
if (magic == MH_MAGIC || magic == MH_CIGAM) {
if (isMachO) *isMachO = 1;
mh = malloc(sizeof(struct mach_header));
if (mh == NULL) return -1;
memset(mh, 0, sizeof(struct mach_header));
mh->magic = magic;
res = read(fd, &mh->cputype, sizeof(struct mach_header) - sizeof(uint32_t));
if (res < sizeof(struct mach_header) - sizeof(uint32_t)) { return 0; }
if (magic == MH_CIGAM) {
swap = 1;
swap_mach_header(mh, NXHostByteOrder());
}
//
// 64-bit, read the rest of the header
//
} else if (magic == MH_MAGIC_64 || magic == MH_CIGAM_64) {
if (isMachO) *isMachO = 1;
mh64 = malloc(sizeof(struct mach_header_64));
if (mh64 == NULL) return -1;
memset(mh64, 0, sizeof(struct mach_header_64));
mh64->magic = magic;
res = read(fd, &mh64->cputype, sizeof(struct mach_header_64) - sizeof(uint32_t));
if (res < sizeof(struct mach_header_64) - sizeof(uint32_t)) { return 0; }
if (magic == MH_CIGAM_64) {
swap = 1;
swap_mach_header_64(mh64, NXHostByteOrder());
}
//
// Not a Mach-O
//
} else {
return 0;
}
switch (mh64 ? mh64->filetype : mh->filetype) {
case MH_EXECUTE:
case MH_DYLIB:
case MH_BUNDLE:
break;
case MH_OBJECT:
default:
return 0;
}
res = SQL("INSERT INTO mach_o_objects (magic, type, cputype, cpusubtype, flags, build, project, path) VALUES (%u, %u, %u, %u, %u, %Q, %Q, %Q)",
mh64 ? mh64->magic : mh->magic,
mh64 ? mh64->filetype : mh->filetype,
mh64 ? mh64->cputype : mh->cputype,
mh64 ? mh64->cpusubtype : mh->cpusubtype,
mh64 ? mh64->flags : mh->flags,
build, project, path);
uint64_t serial = sqlite3_last_insert_rowid((sqlite3*)_DBPluginGetDataStorePtr());
//
// Information needed to parse the symbol table
//
int count_nsect = 0;
unsigned char text_nsect = NO_SECT;
unsigned char data_nsect = NO_SECT;
unsigned char bss_nsect = NO_SECT;
uint32_t nsyms = 0;
uint8_t *symbols = NULL;
uint32_t strsize = 0;
uint8_t *strings = NULL;
int i;
uint32_t ncmds = mh64 ? mh64->ncmds : mh->ncmds;
for (i = 0; i < ncmds; ++i) {
//
// Read a generic load command into memory.
// At first, we only know it has a type and size.
//
struct load_command lctmp;
ssize_t res = read(fd, &lctmp, sizeof(struct load_command));
if (res < sizeof(struct load_command)) { return 0; }
uint32_t cmd = swap ? OSSwapInt32(lctmp.cmd) : lctmp.cmd;
uint32_t cmdsize = swap ? OSSwapInt32(lctmp.cmdsize) : lctmp.cmdsize;
if (cmdsize == 0) continue;
struct load_command* lc = malloc(cmdsize);
if (lc == NULL) { return 0; }
memset(lc, 0, cmdsize);
memcpy(lc, &lctmp, sizeof(lctmp));
// Read the remainder of the load command.
res = read(fd, (uint8_t*)lc + sizeof(struct load_command), cmdsize - sizeof(struct load_command));
if (res < (cmdsize - sizeof(struct load_command))) { free(lc); return 0; }
//
// LC_LOAD_DYLIB and LC_LOAD_WEAK_DYLIB
// Add dylibs as unresolved "lib" dependencies.
//
if (cmd == LC_LOAD_DYLIB || cmd == LC_LOAD_WEAK_DYLIB) {
struct dylib_command *dylib = (struct dylib_command*)lc;
if (swap) swap_dylib_command(dylib, NXHostByteOrder());
// sections immediately follow the dylib_command structure, and are
// reflected in the cmdsize.
int strsize = dylib->cmdsize - sizeof(struct dylib_command);
char* str = malloc(strsize+1);
strncpy(str, (char*)((uint8_t*)dylib + dylib->dylib.name.offset), strsize);
str[strsize] = 0; // NUL-terminate
res = SQL("INSERT INTO unresolved_dependencies (build,project,type,dependency) VALUES (%Q,%Q,%Q,%Q)",
build, project, "lib", str);
free(str);
//
// LC_LOAD_DYLINKER
// Add the dynamic linker (usually dyld) as an unresolved "lib" dependency.
//
} else if (cmd == LC_LOAD_DYLINKER) {
struct dylinker_command *dylinker = (struct dylinker_command*)lc;
if (swap) swap_dylinker_command(dylinker, NXHostByteOrder());
// sections immediately follow the dylib_command structure, and are
// reflected in the cmdsize.
int strsize = dylinker->cmdsize - sizeof(struct dylinker_command);
char* str = malloc(strsize+1);
strncpy(str, (char*)((uint8_t*)dylinker + dylinker->name.offset), strsize);
str[strsize] = 0; // NUL-terminate
res = SQL("INSERT INTO unresolved_dependencies (build,project,type,dependency) VALUES (%Q,%Q,%Q,%Q)",
build, project, "lib", str);
free(str);
//
// LC_SYMTAB
// Read the symbol table into memory, we'll process it after we're
// done with the load commands.
//
} else if (cmd == LC_SYMTAB && symbols == NULL) {
struct symtab_command *symtab = (struct symtab_command*)lc;
if (swap) swap_symtab_command(symtab, NXHostByteOrder());
nsyms = symtab->nsyms;
uint32_t symsize = nsyms * (mh64 ? sizeof(struct nlist_64) : sizeof(struct nlist));
symbols = malloc(symsize);
strsize = symtab->strsize;
// XXX: check strsize != 0
strings = malloc(strsize);
off_t save = lseek(fd, 0, SEEK_CUR);
off_t origin = fa ? fa->offset : 0;
lseek(fd, (off_t)symtab->symoff + origin, SEEK_SET);
res = read(fd, symbols, symsize);
if (res < symsize) { /* XXX: leaks */ return 0; }
lseek(fd, (off_t)symtab->stroff + origin, SEEK_SET);
res = read(fd, strings, strsize);
if (res < strsize) { /* XXX: leaks */ return 0; }
lseek(fd, save, SEEK_SET);
//
// LC_SEGMENT
// We're looking for the section number of the text, data, and bss segments
// in order to parse symbols.
//
} else if (cmd == LC_SEGMENT) {
struct segment_command* seg = (struct segment_command*)lc;
if (swap) swap_segment_command(seg, NXHostByteOrder());
// sections immediately follow the segment_command structure, and are
// reflected in the cmdsize.
int k;
for (k = 0; k < seg->nsects; ++k) {
struct section* sect = (struct section*)((uint8_t*)seg + sizeof(struct segment_command) + k * sizeof(struct section));
if (swap) swap_section(sect, 1, NXHostByteOrder());
if (strcmp(sect->sectname, SECT_TEXT) == 0 && strcmp(sect->segname, SEG_TEXT) == 0) {
text_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_DATA) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
data_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_BSS) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
bss_nsect = ++count_nsect;
} else {
++count_nsect;
}
}
//
// LC_SEGMENT_64
// Same as LC_SEGMENT, but for 64-bit binaries.
//
} else if (lc->cmd == LC_SEGMENT_64) {
struct segment_command_64* seg = (struct segment_command_64*)lc;
if (swap) swap_segment_command_64(seg, NXHostByteOrder());
// sections immediately follow the segment_command structure, and are
// reflected in the cmdsize.
int k;
for (k = 0; k < seg->nsects; ++k) {
struct section_64* sect = (struct section_64*)((uint8_t*)seg + sizeof(struct segment_command_64) + k * sizeof(struct section_64));
if (swap) swap_section_64(sect, 1, NXHostByteOrder());
if (strcmp(sect->sectname, SECT_TEXT) == 0 && strcmp(sect->segname, SEG_TEXT) == 0) {
text_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_DATA) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
data_nsect = ++count_nsect;
} else if (strcmp(sect->sectname, SECT_BSS) == 0 && strcmp(sect->segname, SEG_DATA) == 0) {
bss_nsect = ++count_nsect;
} else {
++count_nsect;
}
}
}
free(lc);
}
//
// Finished processing the load commands, now insert symbols into the database.
//
int j;
for (j = 0; j < nsyms; ++j) {
struct nlist_64 symbol;
if (mh64) {
memcpy(&symbol, (symbols + j * sizeof(struct nlist_64)), sizeof(struct nlist_64));
if (swap) swap_nlist_64(&symbol, 1, NXHostByteOrder());
} else {
symbol.n_value = 0;
memcpy(&symbol, (symbols + j * sizeof(struct nlist)), sizeof(struct nlist));
if (swap) swap_nlist_64(&symbol, 1, NXHostByteOrder());
// we copied a 32-bit nlist into a 64-bit one, adjust the value accordingly
// all other fields are identical sizes
symbol.n_value >>= 32;
}
char type = '?';
switch (symbol.n_type & N_TYPE) {
case N_UNDF:
case N_PBUD:
type = 'u';
if (symbol.n_value != 0) {
type = 'c';
}
break;
case N_ABS:
type = 'a';
break;
case N_SECT:
if (symbol.n_sect == text_nsect) {
type = 't';
} else if (symbol.n_sect == data_nsect) {
type = 'd';
} else if (symbol.n_sect == bss_nsect) {
type = 'b';
} else {
type = 's';
}
break;
case N_INDR:
type = 'i';
break;
}
// uppercase indicates an externally visible symbol
if ((symbol.n_type & N_EXT) && type != '?') {
type = toupper(type);
}
if (type != '?' && type != 'u' && type != 'c') {
const uint8_t* name = (const uint8_t*)"";
if (symbol.n_un.n_strx != 0) {
name = (uint8_t*)(strings + symbol.n_un.n_strx);
}
res = SQL("INSERT INTO mach_o_symbols VALUES (%lld, \'%c\', %lld, %Q)",
serial,
type,
symbol.n_value,
name);
}
}
return 0;
}