#include "llvm/MC/MCSectionMachO.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/MC/MCValue.h"
-#include "llvm/Object/MachOFormat.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/MachO.h"
#include <vector>
using namespace llvm;
-using namespace llvm::object;
void MachObjectWriter::reset() {
Relocations.clear();
uint32_t Flags = 0;
if (SubsectionsViaSymbols)
- Flags |= macho::HF_SubsectionsViaSymbols;
+ Flags |= MachO::MH_SUBSECTIONS_VIA_SYMBOLS;
// struct mach_header (28 bytes) or
// struct mach_header_64 (32 bytes)
uint64_t Start = OS.tell();
(void) Start;
- Write32(is64Bit() ? macho::HM_Object64 : macho::HM_Object32);
+ Write32(is64Bit() ? MachO::MH_MAGIC_64 : MachO::MH_MAGIC);
Write32(TargetObjectWriter->getCPUType());
Write32(TargetObjectWriter->getCPUSubtype());
- Write32(macho::HFT_Object);
+ Write32(MachO::MH_OBJECT);
Write32(NumLoadCommands);
Write32(LoadCommandsSize);
Write32(Flags);
Write32(0); // reserved
assert(OS.tell() - Start ==
- (is64Bit() ? macho::Header64Size : macho::Header32Size));
+ (is64Bit()?sizeof(MachO::mach_header_64): sizeof(MachO::mach_header)));
}
/// WriteSegmentLoadCommand - Write a segment load command.
(void) Start;
unsigned SegmentLoadCommandSize =
- is64Bit() ? macho::SegmentLoadCommand64Size:
- macho::SegmentLoadCommand32Size;
- Write32(is64Bit() ? macho::LCT_Segment64 : macho::LCT_Segment);
+ is64Bit() ? sizeof(MachO::segment_command_64):
+ sizeof(MachO::segment_command);
+ Write32(is64Bit() ? MachO::LC_SEGMENT_64 : MachO::LC_SEGMENT);
Write32(SegmentLoadCommandSize +
- NumSections * (is64Bit() ? macho::Section64Size :
- macho::Section32Size));
+ NumSections * (is64Bit() ? sizeof(MachO::section_64) :
+ sizeof(MachO::section)));
WriteBytes("", 16);
if (is64Bit()) {
Write32(SectionDataStartOffset); // file offset
Write32(SectionDataSize); // file size
}
- Write32(0x7); // maxprot
- Write32(0x7); // initprot
+ // maxprot
+ Write32(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE | MachO::VM_PROT_EXECUTE);
+ // initprot
+ Write32(MachO::VM_PROT_READ | MachO::VM_PROT_WRITE | MachO::VM_PROT_EXECUTE);
Write32(NumSections);
Write32(0); // flags
if (is64Bit())
Write32(0); // reserved3
- assert(OS.tell() - Start == (is64Bit() ? macho::Section64Size :
- macho::Section32Size));
+ assert(OS.tell() - Start == (is64Bit() ? sizeof(MachO::section_64) :
+ sizeof(MachO::section)));
}
void MachObjectWriter::WriteSymtabLoadCommand(uint32_t SymbolOffset,
uint64_t Start = OS.tell();
(void) Start;
- Write32(macho::LCT_Symtab);
- Write32(macho::SymtabLoadCommandSize);
+ Write32(MachO::LC_SYMTAB);
+ Write32(sizeof(MachO::symtab_command));
Write32(SymbolOffset);
Write32(NumSymbols);
Write32(StringTableOffset);
Write32(StringTableSize);
- assert(OS.tell() - Start == macho::SymtabLoadCommandSize);
+ assert(OS.tell() - Start == sizeof(MachO::symtab_command));
}
void MachObjectWriter::WriteDysymtabLoadCommand(uint32_t FirstLocalSymbol,
uint64_t Start = OS.tell();
(void) Start;
- Write32(macho::LCT_Dysymtab);
- Write32(macho::DysymtabLoadCommandSize);
+ Write32(MachO::LC_DYSYMTAB);
+ Write32(sizeof(MachO::dysymtab_command));
Write32(FirstLocalSymbol);
Write32(NumLocalSymbols);
Write32(FirstExternalSymbol);
Write32(0); // locreloff
Write32(0); // nlocrel
- assert(OS.tell() - Start == macho::DysymtabLoadCommandSize);
+ assert(OS.tell() - Start == sizeof(MachO::dysymtab_command));
}
void MachObjectWriter::WriteNlist(MachSymbolData &MSD,
//
// FIXME: Are the prebound or indirect fields possible here?
if (Symbol.isUndefined())
- Type = macho::STT_Undefined;
+ Type = MachO::N_UNDF;
else if (Symbol.isAbsolute())
- Type = macho::STT_Absolute;
+ Type = MachO::N_ABS;
else
- Type = macho::STT_Section;
+ Type = MachO::N_SECT;
// FIXME: Set STAB bits.
if (Data.isPrivateExtern())
- Type |= macho::STF_PrivateExtern;
+ Type |= MachO::N_PEXT;
// Set external bit.
if (Data.isExternal() || Symbol.isUndefined())
- Type |= macho::STF_External;
+ Type |= MachO::N_EXT;
// Compute the symbol address.
if (Symbol.isDefined()) {
assert((1U << Log2Size) == Align && "Invalid 'common' alignment!");
if (Log2Size > 15)
report_fatal_error("invalid 'common' alignment '" +
- Twine(Align) + "'");
+ Twine(Align) + "' for '" + Symbol.getName() + "'",
+ false);
// FIXME: Keep this mask with the SymbolFlags enumeration.
Flags = (Flags & 0xF0FF) | (Log2Size << 8);
}
(void) Start;
Write32(Type);
- Write32(macho::LinkeditLoadCommandSize);
+ Write32(sizeof(MachO::linkedit_data_command));
Write32(DataOffset);
Write32(DataSize);
- assert(OS.tell() - Start == macho::LinkeditLoadCommandSize);
+ assert(OS.tell() - Start == sizeof(MachO::linkedit_data_command));
}
static unsigned ComputeLinkerOptionsLoadCommandSize(
const std::vector<std::string> &Options, bool is64Bit)
{
- unsigned Size = sizeof(macho::LinkerOptionsLoadCommand);
+ unsigned Size = sizeof(MachO::linker_options_command);
for (unsigned i = 0, e = Options.size(); i != e; ++i)
Size += Options[i].size() + 1;
return RoundUpToAlignment(Size, is64Bit ? 8 : 4);
uint64_t Start = OS.tell();
(void) Start;
- Write32(macho::LCT_LinkerOptions);
+ Write32(MachO::LC_LINKER_OPTIONS);
Write32(Size);
Write32(Options.size());
- uint64_t BytesWritten = sizeof(macho::LinkerOptionsLoadCommand);
+ uint64_t BytesWritten = sizeof(MachO::linker_options_command);
for (unsigned i = 0, e = Options.size(); i != e; ++i) {
// Write each string, including the null byte.
const std::string &Option = Options[i];
//
// FIXME: Revisit this when the dust settles.
- // Bind non lazy symbol pointers first.
+ // Report errors for use of .indirect_symbol not in a symbol pointer section
+ // or stub section.
+ for (MCAssembler::indirect_symbol_iterator it = Asm.indirect_symbol_begin(),
+ ie = Asm.indirect_symbol_end(); it != ie; ++it) {
+ const MCSectionMachO &Section =
+ cast<MCSectionMachO>(it->SectionData->getSection());
+
+ if (Section.getType() != MCSectionMachO::S_NON_LAZY_SYMBOL_POINTERS &&
+ Section.getType() != MCSectionMachO::S_LAZY_SYMBOL_POINTERS &&
+ Section.getType() != MCSectionMachO::S_SYMBOL_STUBS) {
+ MCSymbol &Symbol = *it->Symbol;
+ report_fatal_error("indirect symbol '" + Symbol.getName() +
+ "' not in a symbol pointer or stub section");
+ }
+ }
+
+ // Bind non-lazy symbol pointers first.
unsigned IndirectIndex = 0;
for (MCAssembler::indirect_symbol_iterator it = Asm.indirect_symbol_begin(),
ie = Asm.indirect_symbol_end(); it != ie; ++it, ++IndirectIndex) {
// section headers) and the symbol table.
unsigned NumLoadCommands = 1;
uint64_t LoadCommandsSize = is64Bit() ?
- macho::SegmentLoadCommand64Size + NumSections * macho::Section64Size :
- macho::SegmentLoadCommand32Size + NumSections * macho::Section32Size;
+ sizeof(MachO::segment_command_64) + NumSections * sizeof(MachO::section_64):
+ sizeof(MachO::segment_command) + NumSections * sizeof(MachO::section);
// Add the data-in-code load command size, if used.
unsigned NumDataRegions = Asm.getDataRegions().size();
if (NumDataRegions) {
++NumLoadCommands;
- LoadCommandsSize += macho::LinkeditLoadCommandSize;
+ LoadCommandsSize += sizeof(MachO::linkedit_data_command);
}
// Add the symbol table load command sizes, if used.
UndefinedSymbolData.size();
if (NumSymbols) {
NumLoadCommands += 2;
- LoadCommandsSize += (macho::SymtabLoadCommandSize +
- macho::DysymtabLoadCommandSize);
+ LoadCommandsSize += (sizeof(MachO::symtab_command) +
+ sizeof(MachO::dysymtab_command));
}
// Add the linker option load commands sizes.
// Compute the total size of the section data, as well as its file size and vm
// size.
- uint64_t SectionDataStart = (is64Bit() ? macho::Header64Size :
- macho::Header32Size) + LoadCommandsSize;
+ uint64_t SectionDataStart = (is64Bit() ? sizeof(MachO::mach_header_64) :
+ sizeof(MachO::mach_header)) + LoadCommandsSize;
uint64_t SectionDataSize = 0;
uint64_t SectionDataFileSize = 0;
uint64_t VMSize = 0;
uint64_t RelocTableEnd = SectionDataStart + SectionDataFileSize;
for (MCAssembler::const_iterator it = Asm.begin(),
ie = Asm.end(); it != ie; ++it) {
- std::vector<macho::RelocationEntry> &Relocs = Relocations[it];
+ std::vector<MachO::any_relocation_info> &Relocs = Relocations[it];
unsigned NumRelocs = Relocs.size();
uint64_t SectionStart = SectionDataStart + getSectionAddress(it);
WriteSection(Asm, Layout, *it, SectionStart, RelocTableEnd, NumRelocs);
- RelocTableEnd += NumRelocs * macho::RelocationInfoSize;
+ RelocTableEnd += NumRelocs * sizeof(MachO::any_relocation_info);
}
// Write the data-in-code load command, if used.
if (NumDataRegions) {
uint64_t DataRegionsOffset = RelocTableEnd;
uint64_t DataRegionsSize = NumDataRegions * 8;
- WriteLinkeditLoadCommand(macho::LCT_DataInCode, DataRegionsOffset,
+ WriteLinkeditLoadCommand(MachO::LC_DATA_IN_CODE, DataRegionsOffset,
DataRegionsSize);
}
// The string table is written after symbol table.
uint64_t StringTableOffset =
- SymbolTableOffset + NumSymTabSymbols * (is64Bit() ? macho::Nlist64Size :
- macho::Nlist32Size);
+ SymbolTableOffset + NumSymTabSymbols * (is64Bit() ?
+ sizeof(MachO::nlist_64) :
+ sizeof(MachO::nlist));
WriteSymtabLoadCommand(SymbolTableOffset, NumSymTabSymbols,
StringTableOffset, StringTable.size());
ie = Asm.end(); it != ie; ++it) {
// Write the section relocation entries, in reverse order to match 'as'
// (approximately, the exact algorithm is more complicated than this).
- std::vector<macho::RelocationEntry> &Relocs = Relocations[it];
+ std::vector<MachO::any_relocation_info> &Relocs = Relocations[it];
for (unsigned i = 0, e = Relocs.size(); i != e; ++i) {
- Write32(Relocs[e - i - 1].Word0);
- Write32(Relocs[e - i - 1].Word1);
+ Write32(Relocs[e - i - 1].r_word0);
+ Write32(Relocs[e - i - 1].r_word1);
}
}
for (MCAssembler::const_indirect_symbol_iterator
it = Asm.indirect_symbol_begin(),
ie = Asm.indirect_symbol_end(); it != ie; ++it) {
- // Indirect symbols in the non lazy symbol pointer section have some
+ // Indirect symbols in the non-lazy symbol pointer section have some
// special handling.
const MCSectionMachO &Section =
static_cast<const MCSectionMachO&>(it->SectionData->getSection());
// If this symbol is defined and internal, mark it as such.
if (it->Symbol->isDefined() &&
!Asm.getSymbolData(*it->Symbol).isExternal()) {
- uint32_t Flags = macho::ISF_Local;
+ uint32_t Flags = MachO::INDIRECT_SYMBOL_LOCAL;
if (it->Symbol->isAbsolute())
- Flags |= macho::ISF_Absolute;
+ Flags |= MachO::INDIRECT_SYMBOL_ABS;
Write32(Flags);
continue;
}
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