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author | Alexey Samsonov <samsonov@google.com> | 2013-06-18 15:03:28 +0000 |
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committer | Alexey Samsonov <samsonov@google.com> | 2013-06-18 15:03:28 +0000 |
commit | 9c22f87b1374b06dc6c07f6e8047890e390bbe2d (patch) | |
tree | 4b4111e1ecfdffcfc137e357afdb764d72ea3696 /include/llvm/Object | |
parent | 79ac9c8402d4113d42ff2d713c7acdfa800d2397 (diff) | |
download | external_llvm-9c22f87b1374b06dc6c07f6e8047890e390bbe2d.zip external_llvm-9c22f87b1374b06dc6c07f6e8047890e390bbe2d.tar.gz external_llvm-9c22f87b1374b06dc6c07f6e8047890e390bbe2d.tar.bz2 |
Basic support for parsing Mach-O universal binaries in LLVMObject library
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@184191 91177308-0d34-0410-b5e6-96231b3b80d8
Diffstat (limited to 'include/llvm/Object')
-rw-r--r-- | include/llvm/Object/Binary.h | 5 | ||||
-rw-r--r-- | include/llvm/Object/Error.h | 1 | ||||
-rw-r--r-- | include/llvm/Object/MachO.h | 3 | ||||
-rw-r--r-- | include/llvm/Object/MachOFormat.h | 18 | ||||
-rw-r--r-- | include/llvm/Object/MachOUniversal.h | 102 |
5 files changed, 129 insertions, 0 deletions
diff --git a/include/llvm/Object/Binary.h b/include/llvm/Object/Binary.h index 78fcf6f..a3f5625 100644 --- a/include/llvm/Object/Binary.h +++ b/include/llvm/Object/Binary.h @@ -38,6 +38,7 @@ protected: enum { ID_Archive, + ID_MachOUniversalBinary, // Object and children. ID_StartObjects, ID_COFF, @@ -87,6 +88,10 @@ public: return TypeID == ID_Archive; } + bool isMachOUniversalBinary() const { + return TypeID == ID_MachOUniversalBinary; + } + bool isELF() const { return TypeID >= ID_ELF32L && TypeID <= ID_ELF64B; } diff --git a/include/llvm/Object/Error.h b/include/llvm/Object/Error.h index 32b834f..8b0570b 100644 --- a/include/llvm/Object/Error.h +++ b/include/llvm/Object/Error.h @@ -24,6 +24,7 @@ const error_category &object_category(); struct object_error { enum Impl { success = 0, + arch_not_found, invalid_file_type, parse_failed, unexpected_eof diff --git a/include/llvm/Object/MachO.h b/include/llvm/Object/MachO.h index 1b9faaa..50435d6 100644 --- a/include/llvm/Object/MachO.h +++ b/include/llvm/Object/MachO.h @@ -17,6 +17,7 @@ #include "llvm/ADT/ArrayRef.h" #include "llvm/ADT/SmallVector.h" +#include "llvm/ADT/Triple.h" #include "llvm/Object/MachOFormat.h" #include "llvm/Object/ObjectFile.h" #include "llvm/Support/MachO.h" @@ -196,6 +197,8 @@ public: bool is64Bit() const; void ReadULEB128s(uint64_t Index, SmallVectorImpl<uint64_t> &Out) const; + static Triple::ArchType getArch(uint32_t CPUType); + static bool classof(const Binary *v) { return v->isMachO(); } diff --git a/include/llvm/Object/MachOFormat.h b/include/llvm/Object/MachOFormat.h index ffca391..96ee8a7 100644 --- a/include/llvm/Object/MachOFormat.h +++ b/include/llvm/Object/MachOFormat.h @@ -95,6 +95,8 @@ namespace macho { enum StructureSizes { Header32Size = 28, Header64Size = 32, + FatHeaderSize = 8, + FatArchHeaderSize = 20, SegmentLoadCommand32Size = 56, SegmentLoadCommand64Size = 72, Section32Size = 68, @@ -130,6 +132,22 @@ namespace macho { uint32_t Reserved; }; + /// \brief Header for universal object files. + struct FatHeader { + uint32_t Magic; + uint32_t NumFatArch; + }; + + /// \brief Header for a single-architecture object file in a + /// universal binary. + struct FatArchHeader { + uint32_t CPUType; + uint32_t CPUSubtype; + uint32_t Offset; + uint32_t Size; + uint32_t Align; + }; + // See <mach-o/loader.h>. enum HeaderFileType { HFT_Object = 0x1 diff --git a/include/llvm/Object/MachOUniversal.h b/include/llvm/Object/MachOUniversal.h new file mode 100644 index 0000000..5743282 --- /dev/null +++ b/include/llvm/Object/MachOUniversal.h @@ -0,0 +1,102 @@ +//===- MachOUniversal.h - Mach-O universal binaries -------------*- C++ -*-===// +// +// The LLVM Compiler Infrastructure +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// +// +// This file declares Mach-O fat/universal binaries. +// +//===----------------------------------------------------------------------===// + +#ifndef LLVM_OBJECT_MACHOUNIVERSAL_H +#define LLVM_OBJECT_MACHOUNIVERSAL_H + +#include "llvm/ADT/OwningPtr.h" +#include "llvm/ADT/StringRef.h" +#include "llvm/ADT/Triple.h" +#include "llvm/Object/Binary.h" +#include "llvm/Object/MachOFormat.h" + +namespace llvm { +namespace object { + +class ObjectFile; + +class MachOUniversalBinary : public Binary { + virtual void anchor(); + + uint32_t NumberOfObjects; +public: + class ObjectForArch { + const MachOUniversalBinary *Parent; + /// \brief Index of object in the universal binary. + uint32_t Index; + /// \brief Descriptor of the object. + macho::FatArchHeader Header; + + public: + ObjectForArch(const MachOUniversalBinary *Parent, uint32_t Index); + + void clear() { + Parent = 0; + 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 { return Header.CPUType; } + + error_code getAsObjectFile(OwningPtr<ObjectFile> &Result) const; + }; + + class object_iterator { + ObjectForArch Obj; + public: + object_iterator(const ObjectForArch &Obj) : Obj(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(MemoryBuffer *Source, error_code &ec); + + object_iterator begin_objects() const { + return ObjectForArch(this, 0); + } + object_iterator end_objects() const { + return ObjectForArch(0, 0); + } + + uint32_t getNumberOfObjects() const { return NumberOfObjects; } + + // Cast methods. + static inline bool classof(Binary const *V) { + return V->isMachOUniversalBinary(); + } + + error_code getObjectForArch(Triple::ArchType Arch, + OwningPtr<ObjectFile> &Result) const; +}; + +} +} + +#endif |