Add MachOObjectFile::getUuid()
This CL introduces MachOObjectFile::getUuid(). This function returns an ArrayRef to the object file's UUID, or an empty ArrayRef if the object file doesn't contain an LC_UUID load command.
The new function is gonna be used by llvm-symbolizer.
llvm-svn: 219866
diff --git a/llvm/lib/Object/MachOObjectFile.cpp b/llvm/lib/Object/MachOObjectFile.cpp
index 260e755..4435815 100644
--- a/llvm/lib/Object/MachOObjectFile.cpp
+++ b/llvm/lib/Object/MachOObjectFile.cpp
@@ -239,7 +239,7 @@
: ObjectFile(getMachOType(IsLittleEndian, Is64bits), Object),
SymtabLoadCmd(nullptr), DysymtabLoadCmd(nullptr),
DataInCodeLoadCmd(nullptr), DyldInfoLoadCmd(nullptr),
- HasPageZeroSegment(false) {
+ UuidLoadCmd(nullptr), HasPageZeroSegment(false) {
uint32_t LoadCommandCount = this->getHeader().ncmds;
MachO::LoadCommandType SegmentLoadType = is64Bit() ?
MachO::LC_SEGMENT_64 : MachO::LC_SEGMENT;
@@ -259,6 +259,9 @@
Load.C.cmd == MachO::LC_DYLD_INFO_ONLY) {
assert(!DyldInfoLoadCmd && "Multiple dyldinfo load commands");
DyldInfoLoadCmd = Load.Ptr;
+ } else if (Load.C.cmd == MachO::LC_UUID) {
+ assert(!UuidLoadCmd && "Multiple UUID load commands");
+ UuidLoadCmd = Load.Ptr;
} else if (Load.C.cmd == SegmentLoadType) {
uint32_t NumSections = getSegmentLoadCommandNumSections(this, Load);
for (unsigned J = 0; J < NumSections; ++J) {
@@ -2418,6 +2421,12 @@
return ArrayRef<uint8_t>(Ptr, DyldInfo.export_size);
}
+ArrayRef<uint8_t> MachOObjectFile::getUuid() const {
+ if (!UuidLoadCmd)
+ return ArrayRef<uint8_t>();
+ MachO::uuid_command Uuid = getStruct<MachO::uuid_command>(this, UuidLoadCmd);
+ return ArrayRef<uint8_t>(Uuid.uuid, 16);
+}
StringRef MachOObjectFile::getStringTableData() const {
MachO::symtab_command S = getSymtabLoadCommand();