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Support of Apple/LLVM blocks extension (#11787)

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Apple toolchain and LLVM provides closure extension for C/C++,
using as possible the most reliable identifier rather than
functions owners where names can appear too generics.
This commit is contained in:
David CARLIER 2018-10-10 23:36:44 +01:00 committed by radare
parent c7a9ab9d74
commit 79fa245d7d
3 changed files with 16 additions and 0 deletions
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1
libr/bin/format/mach0/mach0.h
View File

@ -142,6 +142,7 @@ struct MACH0_(obj_t) {
int has_canary;
int has_retguard;
int has_sanitizers;
int has_blocks_ext;
int dbg_info;
const char *lang;
int uuidn;

3
libr/bin/p/bin_elf.inc
View File

@ -1036,6 +1036,9 @@ static void lookup_symbols(RBinFile *bf, RBinInfo *ret) {
if (ret->has_canary == true && is_rust == true) {
break;
}
if (!strcmp (symbol->name, "_NSConcreteGlobalBlock")) {
ret->lang = !strcmp (ret->lang, "c++") ? "c++ blocks ext." : "c blocks ext.";
}
if (strstr (symbol->name, "__stack_chk_fail") || strstr (symbol->name, "__stack_smash_handler")) {
ret->has_canary = true;
}

12
libr/bin/p/bin_mach0.c
View File

@ -334,6 +334,9 @@ static RList* symbols(RBinFile *bf) {
ptr->ordinal = i;
bin->dbg_info = strncmp (ptr->name, "radr://", 7)? 0: 1;
sdb_set (symcache, sdb_fmt ("sym0x%"PFMT64x, ptr->vaddr), "found", 0);
if (!strncmp (ptr->name, "__Z", 3)) {
lang = "c++";
}
if (!strncmp (ptr->name, "type.", 5)) {
lang = "go";
} else if (!strcmp (ptr->name, "_rust_oom")) {
@ -376,6 +379,11 @@ static RList* symbols(RBinFile *bf) {
}
}
}
if (bin->has_blocks_ext) {
lang = !strcmp (lang, "c++") ? "c++ blocks ext." : "c blocks ext.";
}
bin->lang = lang;
if (isStripped) {
bin->dbg_info |= R_BIN_DBG_STRIPPED;
@ -407,6 +415,7 @@ static RList* imports(RBinFile *bf) {
bin->has_canary = false;
bin->has_retguard = -1;
bin->has_sanitizers = false;
bin->has_blocks_ext = false;
for (i = 0; !imports[i].last; i++) {
if (!(ptr = R_NEW0 (RBinImport))) {
break;
@ -440,6 +449,9 @@ static RList* imports(RBinFile *bf) {
!strcmp (name, "__tsan_init")) {
bin->has_sanitizers = true;
}
if (!strcmp (name, "_NSConcreteGlobalBlock")) {
bin->has_blocks_ext = true;
}
r_list_append (ret, ptr);
}
free (imports);