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Diffstat (limited to 'lib/Object/MachOObjectFile.cpp')
-rw-r--r--lib/Object/MachOObjectFile.cpp187
1 files changed, 152 insertions, 35 deletions
diff --git a/lib/Object/MachOObjectFile.cpp b/lib/Object/MachOObjectFile.cpp
index 71f1f8c..26a6e13 100644
--- a/lib/Object/MachOObjectFile.cpp
+++ b/lib/Object/MachOObjectFile.cpp
@@ -60,6 +60,8 @@ protected:
virtual error_code getSectionSize(DataRefImpl Sec, uint64_t &Res) const;
virtual error_code getSectionContents(DataRefImpl Sec, StringRef &Res) const;
virtual error_code isSectionText(DataRefImpl Sec, bool &Res) const;
+ virtual error_code sectionContainsSymbol(DataRefImpl DRI, DataRefImpl S,
+ bool &Result) const;
private:
MachOObject *MachOObj;
@@ -68,8 +70,12 @@ private:
void moveToNextSection(DataRefImpl &DRI) const;
void getSymbolTableEntry(DataRefImpl DRI,
InMemoryStruct<macho::SymbolTableEntry> &Res) const;
+ void getSymbol64TableEntry(DataRefImpl DRI,
+ InMemoryStruct<macho::Symbol64TableEntry> &Res) const;
void moveToNextSymbol(DataRefImpl &DRI) const;
void getSection(DataRefImpl DRI, InMemoryStruct<macho::Section> &Res) const;
+ void getSection64(DataRefImpl DRI,
+ InMemoryStruct<macho::Section64> &Res) const;
};
ObjectFile *ObjectFile::createMachOObjectFile(MemoryBuffer *Buffer) {
@@ -114,6 +120,21 @@ void MachOObjectFile::getSymbolTableEntry(DataRefImpl DRI,
Res);
}
+void MachOObjectFile::getSymbol64TableEntry(DataRefImpl DRI,
+ InMemoryStruct<macho::Symbol64TableEntry> &Res) const {
+ InMemoryStruct<macho::SymtabLoadCommand> SymtabLoadCmd;
+ LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
+ MachOObj->ReadSymtabLoadCommand(LCI, SymtabLoadCmd);
+
+ if (RegisteredStringTable != DRI.d.a) {
+ MachOObj->RegisterStringTable(*SymtabLoadCmd);
+ RegisteredStringTable = DRI.d.a;
+ }
+
+ MachOObj->ReadSymbol64TableEntry(SymtabLoadCmd->SymbolTableOffset, DRI.d.b,
+ Res);
+}
+
error_code MachOObjectFile::getSymbolNext(DataRefImpl DRI,
SymbolRef &Result) const {
@@ -125,17 +146,29 @@ error_code MachOObjectFile::getSymbolNext(DataRefImpl DRI,
error_code MachOObjectFile::getSymbolName(DataRefImpl DRI,
StringRef &Result) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
- Result = MachOObj->getStringAtIndex(Entry->StringIndex);
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(DRI, Entry);
+ Result = MachOObj->getStringAtIndex(Entry->StringIndex);
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(DRI, Entry);
+ Result = MachOObj->getStringAtIndex(Entry->StringIndex);
+ }
return object_error::success;
}
error_code MachOObjectFile::getSymbolAddress(DataRefImpl DRI,
uint64_t &Result) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
- Result = Entry->Value;
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(DRI, Entry);
+ Result = Entry->Value;
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(DRI, Entry);
+ Result = Entry->Value;
+ }
return object_error::success;
}
@@ -147,11 +180,21 @@ error_code MachOObjectFile::getSymbolSize(DataRefImpl DRI,
error_code MachOObjectFile::getSymbolNMTypeChar(DataRefImpl DRI,
char &Result) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
+ uint8_t Type, Flags;
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(DRI, Entry);
+ Type = Entry->Type;
+ Flags = Entry->Flags;
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(DRI, Entry);
+ Type = Entry->Type;
+ Flags = Entry->Flags;
+ }
char Char;
- switch (Entry->Type & macho::STF_TypeMask) {
+ switch (Type & macho::STF_TypeMask) {
case macho::STT_Undefined:
Char = 'u';
break;
@@ -164,7 +207,7 @@ error_code MachOObjectFile::getSymbolNMTypeChar(DataRefImpl DRI,
break;
}
- if (Entry->Flags & (macho::STF_External | macho::STF_PrivateExtern))
+ if (Flags & (macho::STF_External | macho::STF_PrivateExtern))
Char = toupper(Char);
Result = Char;
return object_error::success;
@@ -172,9 +215,15 @@ error_code MachOObjectFile::getSymbolNMTypeChar(DataRefImpl DRI,
error_code MachOObjectFile::isSymbolInternal(DataRefImpl DRI,
bool &Result) const {
- InMemoryStruct<macho::SymbolTableEntry> Entry;
- getSymbolTableEntry(DRI, Entry);
- Result = Entry->Flags & macho::STF_StabsEntryMask;
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(DRI, Entry);
+ Result = Entry->Flags & macho::STF_StabsEntryMask;
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(DRI, Entry);
+ Result = Entry->Flags & macho::STF_StabsEntryMask;
+ }
return object_error::success;
}
@@ -234,52 +283,120 @@ MachOObjectFile::getSection(DataRefImpl DRI,
MachOObj->ReadSection(LCI, DRI.d.b, Res);
}
-error_code MachOObjectFile::getSectionName(DataRefImpl DRI,
- StringRef &Result) const {
- InMemoryStruct<macho::SegmentLoadCommand> SLC;
+void
+MachOObjectFile::getSection64(DataRefImpl DRI,
+ InMemoryStruct<macho::Section64> &Res) const {
+ InMemoryStruct<macho::Segment64LoadCommand> SLC;
LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
- MachOObj->ReadSegmentLoadCommand(LCI, SLC);
- InMemoryStruct<macho::Section> Sect;
- MachOObj->ReadSection(LCI, DRI.d.b, Sect);
+ MachOObj->ReadSegment64LoadCommand(LCI, SLC);
+ MachOObj->ReadSection64(LCI, DRI.d.b, Res);
+}
+static bool is64BitLoadCommand(const MachOObject *MachOObj, DataRefImpl DRI) {
+ LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
+ if (LCI.Command.Type == macho::LCT_Segment64)
+ return true;
+ assert(LCI.Command.Type == macho::LCT_Segment && "Unexpected Type.");
+ return false;
+}
+
+error_code MachOObjectFile::getSectionName(DataRefImpl DRI,
+ StringRef &Result) const {
+ // FIXME: thread safety.
static char result[34];
- strcpy(result, SLC->Name);
- strcat(result, ",");
- strcat(result, Sect->Name);
+ if (is64BitLoadCommand(MachOObj, DRI)) {
+ InMemoryStruct<macho::Segment64LoadCommand> SLC;
+ LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
+ MachOObj->ReadSegment64LoadCommand(LCI, SLC);
+ InMemoryStruct<macho::Section64> Sect;
+ MachOObj->ReadSection64(LCI, DRI.d.b, Sect);
+
+ strcpy(result, Sect->SegmentName);
+ strcat(result, ",");
+ strcat(result, Sect->Name);
+ } else {
+ InMemoryStruct<macho::SegmentLoadCommand> SLC;
+ LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
+ MachOObj->ReadSegmentLoadCommand(LCI, SLC);
+ InMemoryStruct<macho::Section> Sect;
+ MachOObj->ReadSection(LCI, DRI.d.b, Sect);
+
+ strcpy(result, Sect->SegmentName);
+ strcat(result, ",");
+ strcat(result, Sect->Name);
+ }
Result = StringRef(result);
return object_error::success;
}
error_code MachOObjectFile::getSectionAddress(DataRefImpl DRI,
uint64_t &Result) const {
- InMemoryStruct<macho::Section> Sect;
- getSection(DRI, Sect);
- Result = Sect->Address;
+ if (is64BitLoadCommand(MachOObj, DRI)) {
+ InMemoryStruct<macho::Section64> Sect;
+ getSection64(DRI, Sect);
+ Result = Sect->Address;
+ } else {
+ InMemoryStruct<macho::Section> Sect;
+ getSection(DRI, Sect);
+ Result = Sect->Address;
+ }
return object_error::success;
}
error_code MachOObjectFile::getSectionSize(DataRefImpl DRI,
uint64_t &Result) const {
- InMemoryStruct<macho::Section> Sect;
- getSection(DRI, Sect);
- Result = Sect->Size;
+ if (is64BitLoadCommand(MachOObj, DRI)) {
+ InMemoryStruct<macho::Section64> Sect;
+ getSection64(DRI, Sect);
+ Result = Sect->Size;
+ } else {
+ InMemoryStruct<macho::Section> Sect;
+ getSection(DRI, Sect);
+ Result = Sect->Size;
+ }
return object_error::success;
}
error_code MachOObjectFile::getSectionContents(DataRefImpl DRI,
StringRef &Result) const {
- InMemoryStruct<macho::Section> Sect;
- getSection(DRI, Sect);
- Result = MachOObj->getData(Sect->Offset, Sect->Size);
+ if (is64BitLoadCommand(MachOObj, DRI)) {
+ InMemoryStruct<macho::Section64> Sect;
+ getSection64(DRI, Sect);
+ Result = MachOObj->getData(Sect->Offset, Sect->Size);
+ } else {
+ InMemoryStruct<macho::Section> Sect;
+ getSection(DRI, Sect);
+ Result = MachOObj->getData(Sect->Offset, Sect->Size);
+ }
return object_error::success;
}
error_code MachOObjectFile::isSectionText(DataRefImpl DRI,
bool &Result) const {
- InMemoryStruct<macho::SegmentLoadCommand> SLC;
- LoadCommandInfo LCI = MachOObj->getLoadCommandInfo(DRI.d.a);
- MachOObj->ReadSegmentLoadCommand(LCI, SLC);
- Result = !strcmp(SLC->Name, "__TEXT");
+ if (is64BitLoadCommand(MachOObj, DRI)) {
+ InMemoryStruct<macho::Section64> Sect;
+ getSection64(DRI, Sect);
+ Result = !strcmp(Sect->Name, "__text");
+ } else {
+ InMemoryStruct<macho::Section> Sect;
+ getSection(DRI, Sect);
+ Result = !strcmp(Sect->Name, "__text");
+ }
+ return object_error::success;
+}
+
+error_code MachOObjectFile::sectionContainsSymbol(DataRefImpl Sec,
+ DataRefImpl Symb,
+ bool &Result) const {
+ if (MachOObj->is64Bit()) {
+ InMemoryStruct<macho::Symbol64TableEntry> Entry;
+ getSymbol64TableEntry(Symb, Entry);
+ Result = Entry->SectionIndex == 1 + Sec.d.a + Sec.d.b;
+ } else {
+ InMemoryStruct<macho::SymbolTableEntry> Entry;
+ getSymbolTableEntry(Symb, Entry);
+ Result = Entry->SectionIndex == 1 + Sec.d.a + Sec.d.b;
+ }
return object_error::success;
}
generated by cgit v1.1 at 2025-08-16 06:24:58 +0000