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| //===- MachOUniversal.h - Mach-O universal binaries -------------*- C++ -*-===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
//
// This file declares Mach-O fat/universal binaries.
//
//===----------------------------------------------------------------------===//
#ifndef LLVM_OBJECT_MACHOUNIVERSAL_H
#define LLVM_OBJECT_MACHOUNIVERSAL_H
#include "llvm/ADT/Triple.h"
#include "llvm/ADT/iterator_range.h"
#include "llvm/BinaryFormat/MachO.h"
#include "llvm/Object/Archive.h"
#include "llvm/Object/Binary.h"
#include "llvm/Object/MachO.h"
namespace llvm {
class StringRef;
namespace object {
class MachOUniversalBinary : public Binary {
virtual void anchor();
uint32_t Magic;
uint32_t NumberOfObjects;
public:
static constexpr uint32_t MaxSectionAlignment = 15; /* 2**15 or 0x8000 */
class ObjectForArch {
const MachOUniversalBinary *Parent;
/// Index of object in the universal binary.
uint32_t Index;
/// Descriptor of the object.
MachO::fat_arch Header;
MachO::fat_arch_64 Header64;
public:
ObjectForArch(const MachOUniversalBinary *Parent, uint32_t Index);
void clear() {
Parent = nullptr;
Index = 0;
}
bool operator==(const ObjectForArch &Other) const {
return (Parent == Other.Parent) && (Index == Other.Index);
}
ObjectForArch getNext() const { return ObjectForArch(Parent, Index + 1); }
uint32_t getCPUType() const {
if (Parent->getMagic() == MachO::FAT_MAGIC)
return Header.cputype;
else // Parent->getMagic() == MachO::FAT_MAGIC_64
return Header64.cputype;
}
uint32_t getCPUSubType() const {
if (Parent->getMagic() == MachO::FAT_MAGIC)
return Header.cpusubtype;
else // Parent->getMagic() == MachO::FAT_MAGIC_64
return Header64.cpusubtype;
}
uint64_t getOffset() const {
if (Parent->getMagic() == MachO::FAT_MAGIC)
return Header.offset;
else // Parent->getMagic() == MachO::FAT_MAGIC_64
return Header64.offset;
}
uint64_t getSize() const {
if (Parent->getMagic() == MachO::FAT_MAGIC)
return Header.size;
else // Parent->getMagic() == MachO::FAT_MAGIC_64
return Header64.size;
}
uint32_t getAlign() const {
if (Parent->getMagic() == MachO::FAT_MAGIC)
return Header.align;
else // Parent->getMagic() == MachO::FAT_MAGIC_64
return Header64.align;
}
uint32_t getReserved() const {
if (Parent->getMagic() == MachO::FAT_MAGIC)
return 0;
else // Parent->getMagic() == MachO::FAT_MAGIC_64
return Header64.reserved;
}
std::string getArchFlagName() const {
const char *McpuDefault, *ArchFlag;
if (Parent->getMagic() == MachO::FAT_MAGIC) {
Triple T =
MachOObjectFile::getArchTriple(Header.cputype, Header.cpusubtype,
&McpuDefault, &ArchFlag);
} else { // Parent->getMagic() == MachO::FAT_MAGIC_64
Triple T =
MachOObjectFile::getArchTriple(Header64.cputype,
Header64.cpusubtype,
&McpuDefault, &ArchFlag);
}
if (ArchFlag) {
std::string ArchFlagName(ArchFlag);
return ArchFlagName;
} else {
std::string ArchFlagName("");
return ArchFlagName;
}
}
Expected<std::unique_ptr<MachOObjectFile>> getAsObjectFile() const;
Expected<std::unique_ptr<Archive>> getAsArchive() const;
};
class object_iterator {
ObjectForArch Obj;
public:
object_iterator(const ObjectForArch &Obj) : Obj(Obj) {}
const ObjectForArch *operator->() const { return &Obj; }
const ObjectForArch &operator*() const { return Obj; }
bool operator==(const object_iterator &Other) const {
return Obj == Other.Obj;
}
bool operator!=(const object_iterator &Other) const {
return !(*this == Other);
}
object_iterator& operator++() { // Preincrement
Obj = Obj.getNext();
return *this;
}
};
MachOUniversalBinary(MemoryBufferRef Souce, Error &Err);
static Expected<std::unique_ptr<MachOUniversalBinary>>
create(MemoryBufferRef Source);
object_iterator begin_objects() const {
return ObjectForArch(this, 0);
}
object_iterator end_objects() const {
return ObjectForArch(nullptr, 0);
}
iterator_range<object_iterator> objects() const {
return make_range(begin_objects(), end_objects());
}
uint32_t getMagic() const { return Magic; }
uint32_t getNumberOfObjects() const { return NumberOfObjects; }
// Cast methods.
static bool classof(Binary const *V) {
return V->isMachOUniversalBinary();
}
Expected<ObjectForArch>
getObjectForArch(StringRef ArchName) const;
Expected<std::unique_ptr<MachOObjectFile>>
getMachOObjectForArch(StringRef ArchName) const;
Expected<std::unique_ptr<Archive>>
getArchiveForArch(StringRef ArchName) const;
};
}
}
#endif
|