#include "llvm/Object/MachO.h"
#include "llvm/ADT/STLExtras.h"
+#include "llvm/ADT/StringSwitch.h"
#include "llvm/ADT/Triple.h"
#include "llvm/Support/DataExtractor.h"
#include "llvm/Support/Format.h"
using namespace llvm;
using namespace object;
-namespace llvm {
-
-namespace object {
-
-struct nlist_base {
- uint32_t n_strx;
- uint8_t n_type;
- uint8_t n_sect;
- uint16_t n_desc;
-};
-
-struct section_base {
- char sectname[16];
- char segname[16];
-};
-
-template<typename T>
-static void SwapStruct(T &Value);
-
-template<>
-void SwapStruct(MachO::any_relocation_info &H) {
- sys::swapByteOrder(H.r_word0);
- sys::swapByteOrder(H.r_word1);
-}
-
-template<>
-void SwapStruct(MachO::load_command &L) {
- sys::swapByteOrder(L.cmd);
- sys::swapByteOrder(L.cmdsize);
-}
-
-template<>
-void SwapStruct(nlist_base &S) {
- sys::swapByteOrder(S.n_strx);
- sys::swapByteOrder(S.n_desc);
-}
-
-template<>
-void SwapStruct(MachO::section &S) {
- sys::swapByteOrder(S.addr);
- sys::swapByteOrder(S.size);
- sys::swapByteOrder(S.offset);
- sys::swapByteOrder(S.align);
- sys::swapByteOrder(S.reloff);
- sys::swapByteOrder(S.nreloc);
- sys::swapByteOrder(S.flags);
- sys::swapByteOrder(S.reserved1);
- sys::swapByteOrder(S.reserved2);
-}
-
-template<>
-void SwapStruct(MachO::section_64 &S) {
- sys::swapByteOrder(S.addr);
- sys::swapByteOrder(S.size);
- sys::swapByteOrder(S.offset);
- sys::swapByteOrder(S.align);
- sys::swapByteOrder(S.reloff);
- sys::swapByteOrder(S.nreloc);
- sys::swapByteOrder(S.flags);
- sys::swapByteOrder(S.reserved1);
- sys::swapByteOrder(S.reserved2);
- sys::swapByteOrder(S.reserved3);
-}
-
-template<>
-void SwapStruct(MachO::nlist &S) {
- sys::swapByteOrder(S.n_strx);
- sys::swapByteOrder(S.n_desc);
- sys::swapByteOrder(S.n_value);
-}
-
-template<>
-void SwapStruct(MachO::nlist_64 &S) {
- sys::swapByteOrder(S.n_strx);
- sys::swapByteOrder(S.n_desc);
- sys::swapByteOrder(S.n_value);
-}
-
-template<>
-void SwapStruct(MachO::mach_header &H) {
- sys::swapByteOrder(H.magic);
- sys::swapByteOrder(H.cputype);
- sys::swapByteOrder(H.cpusubtype);
- sys::swapByteOrder(H.filetype);
- sys::swapByteOrder(H.ncmds);
- sys::swapByteOrder(H.sizeofcmds);
- sys::swapByteOrder(H.flags);
-}
-
-template<>
-void SwapStruct(MachO::mach_header_64 &H) {
- sys::swapByteOrder(H.magic);
- sys::swapByteOrder(H.cputype);
- sys::swapByteOrder(H.cpusubtype);
- sys::swapByteOrder(H.filetype);
- sys::swapByteOrder(H.ncmds);
- sys::swapByteOrder(H.sizeofcmds);
- sys::swapByteOrder(H.flags);
- sys::swapByteOrder(H.reserved);
-}
-
-template<>
-void SwapStruct(MachO::symtab_command &C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.symoff);
- sys::swapByteOrder(C.nsyms);
- sys::swapByteOrder(C.stroff);
- sys::swapByteOrder(C.strsize);
-}
-
-template<>
-void SwapStruct(MachO::dysymtab_command &C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.ilocalsym);
- sys::swapByteOrder(C.nlocalsym);
- sys::swapByteOrder(C.iextdefsym);
- sys::swapByteOrder(C.nextdefsym);
- sys::swapByteOrder(C.iundefsym);
- sys::swapByteOrder(C.nundefsym);
- sys::swapByteOrder(C.tocoff);
- sys::swapByteOrder(C.ntoc);
- sys::swapByteOrder(C.modtaboff);
- sys::swapByteOrder(C.nmodtab);
- sys::swapByteOrder(C.extrefsymoff);
- sys::swapByteOrder(C.nextrefsyms);
- sys::swapByteOrder(C.indirectsymoff);
- sys::swapByteOrder(C.nindirectsyms);
- sys::swapByteOrder(C.extreloff);
- sys::swapByteOrder(C.nextrel);
- sys::swapByteOrder(C.locreloff);
- sys::swapByteOrder(C.nlocrel);
-}
-
-template<>
-void SwapStruct(MachO::linkedit_data_command &C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.dataoff);
- sys::swapByteOrder(C.datasize);
-}
-
-template<>
-void SwapStruct(MachO::segment_command &C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.vmaddr);
- sys::swapByteOrder(C.vmsize);
- sys::swapByteOrder(C.fileoff);
- sys::swapByteOrder(C.filesize);
- sys::swapByteOrder(C.maxprot);
- sys::swapByteOrder(C.initprot);
- sys::swapByteOrder(C.nsects);
- sys::swapByteOrder(C.flags);
-}
-
-template<>
-void SwapStruct(MachO::segment_command_64 &C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.vmaddr);
- sys::swapByteOrder(C.vmsize);
- sys::swapByteOrder(C.fileoff);
- sys::swapByteOrder(C.filesize);
- sys::swapByteOrder(C.maxprot);
- sys::swapByteOrder(C.initprot);
- sys::swapByteOrder(C.nsects);
- sys::swapByteOrder(C.flags);
-}
-
-template<>
-void SwapStruct(uint32_t &C) {
- sys::swapByteOrder(C);
-}
-
-template<>
-void SwapStruct(MachO::linker_options_command &C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.count);
-}
-
-template<>
-void SwapStruct(MachO::version_min_command&C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.version);
- sys::swapByteOrder(C.reserved);
-}
-
-template<>
-void SwapStruct(MachO::dylib_command&C) {
- sys::swapByteOrder(C.cmd);
- sys::swapByteOrder(C.cmdsize);
- sys::swapByteOrder(C.dylib.name);
- sys::swapByteOrder(C.dylib.timestamp);
- sys::swapByteOrder(C.dylib.current_version);
- sys::swapByteOrder(C.dylib.compatibility_version);
-}
-
-template<>
-void SwapStruct(MachO::data_in_code_entry &C) {
- sys::swapByteOrder(C.offset);
- sys::swapByteOrder(C.length);
- sys::swapByteOrder(C.kind);
+namespace {
+ struct section_base {
+ char sectname[16];
+ char segname[16];
+ };
}
template<typename T>
-T getStruct(const MachOObjectFile *O, const char *P) {
+static T getStruct(const MachOObjectFile *O, const char *P) {
T Cmd;
memcpy(&Cmd, P, sizeof(T));
if (O->isLittleEndian() != sys::IsLittleEndianHost)
- SwapStruct(Cmd);
+ MachO::swapStruct(Cmd);
return Cmd;
}
return O->getData().substr(Offset, 1).data();
}
-static nlist_base
+static MachO::nlist_base
getSymbolTableEntryBase(const MachOObjectFile *O, DataRefImpl DRI) {
const char *P = reinterpret_cast<const char *>(DRI.p);
- return getStruct<nlist_base>(O, P);
+ return getStruct<MachO::nlist_base>(O, P);
}
static StringRef parseSegmentOrSectionName(const char *P) {
std::error_code MachOObjectFile::getSymbolName(DataRefImpl Symb,
StringRef &Res) const {
StringRef StringTable = getStringTableData();
- nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, Symb);
const char *Start = &StringTable.data()[Entry.n_strx];
Res = StringRef(Start);
return object_error::success;
uint32_t &Result) const {
uint32_t flags = getSymbolFlags(DRI);
if (flags & SymbolRef::SF_Common) {
- nlist_base Entry = getSymbolTableEntryBase(this, DRI);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, DRI);
Result = 1 << MachO::GET_COMM_ALIGN(Entry.n_desc);
} else {
Result = 0;
uint64_t EndOffset = 0;
uint8_t SectionIndex;
- nlist_base Entry = getSymbolTableEntryBase(this, DRI);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, DRI);
uint64_t Value;
getSymbolAddress(DRI, Value);
if (Value == UnknownAddressOrSize) {
std::error_code MachOObjectFile::getSymbolType(DataRefImpl Symb,
SymbolRef::Type &Res) const {
- nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, Symb);
uint8_t n_type = Entry.n_type;
Res = SymbolRef::ST_Other;
}
uint32_t MachOObjectFile::getSymbolFlags(DataRefImpl DRI) const {
- nlist_base Entry = getSymbolTableEntryBase(this, DRI);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, DRI);
uint8_t MachOType = Entry.n_type;
uint16_t MachOFlags = Entry.n_desc;
if (MachOFlags & (MachO::N_WEAK_REF | MachO::N_WEAK_DEF))
Result |= SymbolRef::SF_Weak;
+ if (MachOFlags & (MachO::N_ARM_THUMB_DEF))
+ Result |= SymbolRef::SF_Thumb;
+
if ((MachOType & MachO::N_TYPE) == MachO::N_ABS)
Result |= SymbolRef::SF_Absolute;
std::error_code MachOObjectFile::getSymbolSection(DataRefImpl Symb,
section_iterator &Res) const {
- nlist_base Entry = getSymbolTableEntryBase(this, Symb);
+ MachO::nlist_base Entry = getSymbolTableEntryBase(this, Symb);
uint8_t index = Entry.n_sect;
if (index == 0) {
symbol_iterator
MachOObjectFile::getRelocationSymbol(DataRefImpl Rel) const {
MachO::any_relocation_info RE = getRelocation(Rel);
+ if (isRelocationScattered(RE))
+ return symbol_end();
+
uint32_t SymbolIdx = getPlainRelocationSymbolNum(RE);
bool isExtern = getPlainRelocationExternal(RE);
if (!isExtern)
res = Table[RType];
break;
}
- case Triple::arm64:
case Triple::aarch64: {
static const char *const Table[] = {
"ARM64_RELOC_UNSIGNED", "ARM64_RELOC_SUBTRACTOR",
return object_error::success;
}
-std::error_code MachOObjectFile::getLibraryNext(DataRefImpl LibData,
- LibraryRef &Res) const {
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
-std::error_code MachOObjectFile::getLibraryPath(DataRefImpl LibData,
- StringRef &Res) const {
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
//
// guessLibraryShortName() is passed a name of a dynamic library and returns a
// guess on what the short name is. Then name is returned as a substring of the
return section_iterator(SectionRef(DRI, this));
}
-library_iterator MachOObjectFile::needed_library_begin() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
-library_iterator MachOObjectFile::needed_library_end() const {
- // TODO: implement
- report_fatal_error("Needed libraries unimplemented in MachOObjectFile");
-}
-
uint8_t MachOObjectFile::getBytesInAddress() const {
return is64Bit() ? 8 : 4;
}
case llvm::MachO::CPU_TYPE_ARM:
return Triple::arm;
case llvm::MachO::CPU_TYPE_ARM64:
- return Triple::arm64;
+ return Triple::aarch64;
case llvm::MachO::CPU_TYPE_POWERPC:
return Triple::ppc;
case llvm::MachO::CPU_TYPE_POWERPC64:
}
}
+Triple MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType,
+ const char **McpuDefault) {
+ if (McpuDefault)
+ *McpuDefault = nullptr;
+
+ switch (CPUType) {
+ case MachO::CPU_TYPE_I386:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_I386_ALL:
+ return Triple("i386-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_X86_64:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_X86_64_ALL:
+ return Triple("x86_64-apple-darwin");
+ case MachO::CPU_SUBTYPE_X86_64_H:
+ return Triple("x86_64h-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_ARM:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_ARM_V4T:
+ return Triple("armv4t-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V5TEJ:
+ return Triple("armv5e-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_XSCALE:
+ return Triple("xscale-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6:
+ return Triple("armv6-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m0";
+ return Triple("armv6m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7:
+ return Triple("armv7-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7EM:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m4";
+ return Triple("armv7em-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7K:
+ return Triple("armv7k-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m3";
+ return Triple("armv7m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7S:
+ return Triple("armv7s-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_ARM64:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_ARM64_ALL:
+ return Triple("arm64-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_POWERPC:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_POWERPC_ALL:
+ return Triple("ppc-apple-darwin");
+ default:
+ return Triple();
+ }
+ case MachO::CPU_TYPE_POWERPC64:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_POWERPC_ALL:
+ return Triple("ppc64-apple-darwin");
+ default:
+ return Triple();
+ }
+ default:
+ return Triple();
+ }
+}
+
+Triple MachOObjectFile::getThumbArch(uint32_t CPUType, uint32_t CPUSubType,
+ const char **McpuDefault) {
+ if (McpuDefault)
+ *McpuDefault = nullptr;
+
+ switch (CPUType) {
+ case MachO::CPU_TYPE_ARM:
+ switch (CPUSubType & ~MachO::CPU_SUBTYPE_MASK) {
+ case MachO::CPU_SUBTYPE_ARM_V4T:
+ return Triple("thumbv4t-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V5TEJ:
+ return Triple("thumbv5e-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_XSCALE:
+ return Triple("xscale-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6:
+ return Triple("thumbv6-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V6M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m0";
+ return Triple("thumbv6m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7:
+ return Triple("thumbv7-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7EM:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m4";
+ return Triple("thumbv7em-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7K:
+ return Triple("thumbv7k-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7M:
+ if (McpuDefault)
+ *McpuDefault = "cortex-m3";
+ return Triple("thumbv7m-apple-darwin");
+ case MachO::CPU_SUBTYPE_ARM_V7S:
+ return Triple("thumbv7s-apple-darwin");
+ default:
+ return Triple();
+ }
+ default:
+ return Triple();
+ }
+}
+
+Triple MachOObjectFile::getArch(uint32_t CPUType, uint32_t CPUSubType,
+ const char **McpuDefault,
+ Triple *ThumbTriple) {
+ Triple T = MachOObjectFile::getArch(CPUType, CPUSubType, McpuDefault);
+ *ThumbTriple = MachOObjectFile::getThumbArch(CPUType, CPUSubType,
+ McpuDefault);
+ return T;
+}
+
+Triple MachOObjectFile::getHostArch() {
+ return Triple(sys::getDefaultTargetTriple());
+}
+
+bool MachOObjectFile::isValidArch(StringRef ArchFlag) {
+ return StringSwitch<bool>(ArchFlag)
+ .Case("i386", true)
+ .Case("x86_64", true)
+ .Case("x86_64h", true)
+ .Case("armv4t", true)
+ .Case("arm", true)
+ .Case("armv5e", true)
+ .Case("armv6", true)
+ .Case("armv6m", true)
+ .Case("armv7em", true)
+ .Case("armv7k", true)
+ .Case("armv7m", true)
+ .Case("armv7s", true)
+ .Case("arm64", true)
+ .Case("ppc", true)
+ .Case("ppc64", true)
+ .Default(false);
+}
+
unsigned MachOObjectFile::getArch() const {
return getArch(getCPUType(this));
}
-StringRef MachOObjectFile::getLoadName() const {
- // TODO: Implement
- report_fatal_error("get_load_name() unimplemented in MachOObjectFile");
+Triple MachOObjectFile::getArch(const char **McpuDefault,
+ Triple *ThumbTriple) const {
+ Triple T;
+ if (is64Bit()) {
+ MachO::mach_header_64 H_64;
+ H_64 = getHeader64();
+ T = MachOObjectFile::getArch(H_64.cputype, H_64.cpusubtype, McpuDefault);
+ *ThumbTriple = MachOObjectFile::getThumbArch(H_64.cputype, H_64.cpusubtype,
+ McpuDefault);
+ } else {
+ MachO::mach_header H;
+ H = getHeader();
+ T = MachOObjectFile::getArch(H.cputype, H.cpusubtype, McpuDefault);
+ *ThumbTriple = MachOObjectFile::getThumbArch(H.cputype, H.cpusubtype,
+ McpuDefault);
+ }
+ return T;
}
relocation_iterator MachOObjectFile::section_rel_begin(unsigned Index) const {
return getStruct<MachO::version_min_command>(this, L.Ptr);
}
+MachO::dylib_command
+MachOObjectFile::getDylibIDLoadCommand(const LoadCommandInfo &L) const {
+ return getStruct<MachO::dylib_command>(this, L.Ptr);
+}
+
+
MachO::any_relocation_info
MachOObjectFile::getRelocation(DataRefImpl Rel) const {
DataRefImpl Sec;
bool MachOObjectFile::is64Bit() const {
return getType() == getMachOType(false, true) ||
- getType() == getMachOType(true, true);
+ getType() == getMachOType(true, true);
}
void MachOObjectFile::ReadULEB128s(uint64_t Index,
}
}
-const char *MachOObjectFile::getSectionPointer(DataRefImpl Rel) const {
- return Sections[Rel.d.a];
+bool MachOObjectFile::isRelocatableObject() const {
+ return getHeader().filetype == MachO::MH_OBJECT;
}
-ErrorOr<ObjectFile *>
+ErrorOr<std::unique_ptr<MachOObjectFile>>
ObjectFile::createMachOObjectFile(std::unique_ptr<MemoryBuffer> &Buffer) {
StringRef Magic = Buffer->getBuffer().slice(0, 4);
std::error_code EC;
if (EC)
return EC;
- return Ret.release();
+ return std::move(Ret);
}
-} // end namespace object
-} // end namespace llvm
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