Header_Magic32 = 0xFEEDFACE,
Header_Magic64 = 0xFEEDFACF
};
-
+
static const unsigned Header32Size = 28;
static const unsigned Header64Size = 32;
static const unsigned SegmentLoadCommand32Size = 56;
bool IsLSB;
public:
- MachObjectWriter(raw_ostream &_OS, bool _IsLSB = true)
+ MachObjectWriter(raw_ostream &_OS, bool _IsLSB = true)
: OS(_OS), IsLSB(_IsLSB) {
}
void WriteZeros(unsigned N) {
const char Zeros[16] = { 0 };
-
+
for (unsigned i = 0, e = N / 16; i != e; ++i)
OS << StringRef(Zeros, 16);
-
+
OS << StringRef(Zeros, N % 16);
}
- void WriteString(const StringRef &Str, unsigned ZeroFillSize = 0) {
+ void WriteString(StringRef Str, unsigned ZeroFillSize = 0) {
OS << Str;
if (ZeroFillSize)
WriteZeros(ZeroFillSize - Str.size());
}
/// @}
-
+
void WriteHeader32(unsigned NumLoadCommands, unsigned LoadCommandsSize,
bool SubsectionsViaSymbols) {
uint32_t Flags = 0;
Write32(MSD.StringIndex);
Write8(Type);
Write8(MSD.SectionIndex);
-
+
// The Mach-O streamer uses the lowest 16-bits of the flags for the 'desc'
// value.
Write16(Flags);
Target.getConstant()))
return ComputeScatteredRelocationInfo(Asm, Fixup, Target,
SymbolMap, Relocs);
-
+
// See <reloc.h>.
uint32_t Address = Fixup.Fragment->getOffset() + Fixup.Offset;
uint32_t Value = 0;
} else {
const MCSymbol *Symbol = Target.getSymA();
MCSymbolData *SD = SymbolMap.lookup(Symbol);
-
+
if (Symbol->isUndefined()) {
IsExtern = 1;
Index = SD->getIndex();
(Type << 28));
Relocs.push_back(MRE);
}
-
+
void BindIndirectSymbols(MCAssembler &Asm,
DenseMap<const MCSymbol*,MCSymbolData*> &SymbolMap) {
// This is the point where 'as' creates actual symbols for indirect symbols
UndefinedSymbolData[i].SymbolData->setIndex(Index++);
// The string table is padded to a multiple of 4.
- //
- // FIXME: Check to see if this varies per arch.
while (StringTable.size() % 4)
StringTable += '\x00';
}
if (NumSymbols)
ComputeSymbolTable(Asm, StringTable, LocalSymbolData, ExternalSymbolData,
UndefinedSymbolData);
-
+
// The section data starts after the header, the segment load command (and
// section headers) and the symbol table.
unsigned NumLoadCommands = 1;
SectionDataSize = std::max(SectionDataSize,
SD.getAddress() + SD.getSize());
- SectionDataFileSize = std::max(SectionDataFileSize,
+ SectionDataFileSize = std::max(SectionDataFileSize,
SD.getAddress() + SD.getFileSize());
}
Asm.getSubsectionsViaSymbols());
WriteSegmentLoadCommand32(NumSections, VMSize,
SectionDataStart, SectionDataSize);
-
+
// ... and then the section headers.
- //
+ //
// We also compute the section relocations while we do this. Note that
// compute relocation info will also update the fixup to have the correct
// value; this will be overwrite the appropriate data in the fragment when
WriteSection32(SD, SectionStart, RelocTableEnd, NumRelocs);
RelocTableEnd += NumRelocs * RelocationInfoSize;
}
-
+
// Write the symbol table load command, if used.
if (NumSymbols) {
unsigned FirstLocalSymbol = 0;
return 0;
}
-
+
/* *** */
MCSymbolData::MCSymbolData() : Symbol(0) {}
switch (F.getKind()) {
case MCFragment::FT_Align: {
MCAlignFragment &AF = cast<MCAlignFragment>(F);
-
+
uint64_t Size = OffsetToAlignment(Address, AF.getAlignment());
if (Size > AF.getMaxBytesToEmit())
AF.setFileSize(0);
// FIXME: We need a way to communicate this error.
if (OrgOffset < Offset)
- llvm_report_error("invalid .org offset '" + Twine(OrgOffset) +
+ llvm_report_error("invalid .org offset '" + Twine(OrgOffset) +
"' (at offset '" + Twine(Offset) + "'");
-
+
F.setFileSize(OrgOffset - Offset);
break;
- }
+ }
case MCFragment::FT_ZeroFill: {
MCZeroFillFragment &ZFF = cast<MCZeroFillFragment>(F);
MachObjectWriter &MOW) {
uint64_t Start = OS.tell();
(void) Start;
-
+
++EmittedFragments;
// FIXME: Embed in fragments instead?
// multiple .align directives to enforce the semantics it wants), but is
// severe enough that we want to report it. How to handle this?
if (Count * AF.getValueSize() != AF.getFileSize())
- llvm_report_error("undefined .align directive, value size '" +
- Twine(AF.getValueSize()) +
+ llvm_report_error("undefined .align directive, value size '" +
+ Twine(AF.getValueSize()) +
"' is not a divisor of padding size '" +
Twine(AF.getFileSize()) + "'");
}
break;
}
-
+
case MCFragment::FT_Org: {
MCOrgFragment &OF = cast<MCOrgFragment>(F);
uint64_t Start = OS.tell();
(void) Start;
-
+
for (MCSectionData::const_iterator it = SD.begin(),
ie = SD.end(); it != ie; ++it)
WriteFileData(OS, *it, MOW);