summaryrefslogtreecommitdiff
path: root/include/llvm/MC/MCMachObjectWriter.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/llvm/MC/MCMachObjectWriter.h')
-rw-r--r--include/llvm/MC/MCMachObjectWriter.h82
1 files changed, 44 insertions, 38 deletions
diff --git a/include/llvm/MC/MCMachObjectWriter.h b/include/llvm/MC/MCMachObjectWriter.h
index 0c5aa8a180638..63c2a28a7c9c8 100644
--- a/include/llvm/MC/MCMachObjectWriter.h
+++ b/include/llvm/MC/MCMachObjectWriter.h
@@ -21,7 +21,6 @@
namespace llvm {
-class MCSectionData;
class MachObjectWriter;
class MCMachObjectTargetWriter {
@@ -45,14 +44,14 @@ protected:
public:
virtual ~MCMachObjectTargetWriter();
- /// @name Lifetime Management
+ /// \name Lifetime Management
/// @{
virtual void reset() {};
/// @}
- /// @name Accessors
+ /// \name Accessors
/// @{
bool is64Bit() const { return Is64Bit; }
@@ -65,15 +64,13 @@ public:
/// @}
- /// @name API
+ /// \name API
/// @{
- virtual void RecordRelocation(MachObjectWriter *Writer,
- const MCAssembler &Asm,
+ virtual void RecordRelocation(MachObjectWriter *Writer, MCAssembler &Asm,
const MCAsmLayout &Layout,
const MCFragment *Fragment,
- const MCFixup &Fixup,
- MCValue Target,
+ const MCFixup &Fixup, MCValue Target,
uint64_t &FixedValue) = 0;
/// @}
@@ -83,7 +80,7 @@ class MachObjectWriter : public MCObjectWriter {
/// MachSymbolData - Helper struct for containing some precomputed information
/// on symbols.
struct MachSymbolData {
- MCSymbolData *SymbolData;
+ const MCSymbol *Symbol;
uint64_t StringIndex;
uint8_t SectionIndex;
@@ -94,15 +91,21 @@ class MachObjectWriter : public MCObjectWriter {
/// The target specific Mach-O writer instance.
std::unique_ptr<MCMachObjectTargetWriter> TargetObjectWriter;
- /// @name Relocation Data
+ /// \name Relocation Data
/// @{
- llvm::DenseMap<const MCSectionData*,
- std::vector<MachO::any_relocation_info> > Relocations;
- llvm::DenseMap<const MCSectionData*, unsigned> IndirectSymBase;
+ struct RelAndSymbol {
+ const MCSymbol *Sym;
+ MachO::any_relocation_info MRE;
+ RelAndSymbol(const MCSymbol *Sym, const MachO::any_relocation_info &MRE)
+ : Sym(Sym), MRE(MRE) {}
+ };
+
+ llvm::DenseMap<const MCSection *, std::vector<RelAndSymbol>> Relocations;
+ llvm::DenseMap<const MCSection *, unsigned> IndirectSymBase;
/// @}
- /// @name Symbol Table Data
+ /// \name Symbol Table Data
/// @{
StringTableBuilder StringTable;
@@ -115,19 +118,20 @@ class MachObjectWriter : public MCObjectWriter {
MachSymbolData *findSymbolData(const MCSymbol &Sym);
public:
- MachObjectWriter(MCMachObjectTargetWriter *MOTW, raw_ostream &_OS,
- bool _IsLittleEndian)
- : MCObjectWriter(_OS, _IsLittleEndian), TargetObjectWriter(MOTW) {
- }
+ MachObjectWriter(MCMachObjectTargetWriter *MOTW, raw_pwrite_stream &OS,
+ bool IsLittleEndian)
+ : MCObjectWriter(OS, IsLittleEndian), TargetObjectWriter(MOTW) {}
+
+ const MCSymbol &findAliasedSymbol(const MCSymbol &Sym) const;
- /// @name Lifetime management Methods
+ /// \name Lifetime management Methods
/// @{
void reset() override;
/// @}
- /// @name Utility Methods
+ /// \name Utility Methods
/// @{
bool isFixupKindPCRel(const MCAssembler &Asm, unsigned Kind);
@@ -136,23 +140,21 @@ public:
SectionAddrMap &getSectionAddressMap() { return SectionAddress; }
- uint64_t getSectionAddress(const MCSectionData* SD) const {
- return SectionAddress.lookup(SD);
+ uint64_t getSectionAddress(const MCSection *Sec) const {
+ return SectionAddress.lookup(Sec);
}
- uint64_t getSymbolAddress(const MCSymbolData* SD,
- const MCAsmLayout &Layout) const;
+ uint64_t getSymbolAddress(const MCSymbol &S, const MCAsmLayout &Layout) const;
uint64_t getFragmentAddress(const MCFragment *Fragment,
const MCAsmLayout &Layout) const;
- uint64_t getPaddingSize(const MCSectionData *SD,
- const MCAsmLayout &Layout) const;
+ uint64_t getPaddingSize(const MCSection *SD, const MCAsmLayout &Layout) const;
- bool doesSymbolRequireExternRelocation(const MCSymbolData *SD);
+ bool doesSymbolRequireExternRelocation(const MCSymbol &S);
/// @}
- /// @name Target Writer Proxy Accessors
+ /// \name Target Writer Proxy Accessors
/// @{
bool is64Bit() const { return TargetObjectWriter->is64Bit(); }
@@ -176,7 +178,7 @@ public:
uint64_t SectionDataSize);
void WriteSection(const MCAssembler &Asm, const MCAsmLayout &Layout,
- const MCSectionData &SD, uint64_t FileOffset,
+ const MCSection &Sec, uint64_t FileOffset,
uint64_t RelocationsStart, unsigned NumRelocations);
void WriteSymtabLoadCommand(uint32_t SymbolOffset, uint32_t NumSymbols,
@@ -213,9 +215,15 @@ public:
// - Input errors, where something cannot be correctly encoded. 'as' allows
// these through in many cases.
- void addRelocation(const MCSectionData *SD,
+ // Add a relocation to be output in the object file. At the time this is
+ // called, the symbol indexes are not know, so if the relocation refers
+ // to a symbol it should be passed as \p RelSymbol so that it can be updated
+ // afterwards. If the relocation doesn't refer to a symbol, nullptr should be
+ // used.
+ void addRelocation(const MCSymbol *RelSymbol, const MCSection *Sec,
MachO::any_relocation_info &MRE) {
- Relocations[SD].push_back(MRE);
+ RelAndSymbol P(RelSymbol, MRE);
+ Relocations[Sec].push_back(P);
}
void RecordScatteredRelocation(const MCAssembler &Asm,
@@ -231,7 +239,7 @@ public:
const MCFixup &Fixup, MCValue Target,
uint64_t &FixedValue);
- void RecordRelocation(const MCAssembler &Asm, const MCAsmLayout &Layout,
+ void RecordRelocation(MCAssembler &Asm, const MCAsmLayout &Layout,
const MCFragment *Fragment, const MCFixup &Fixup,
MCValue Target, bool &IsPCRel,
uint64_t &FixedValue) override;
@@ -248,15 +256,12 @@ public:
void computeSectionAddresses(const MCAssembler &Asm,
const MCAsmLayout &Layout);
- void markAbsoluteVariableSymbols(MCAssembler &Asm,
- const MCAsmLayout &Layout);
void ExecutePostLayoutBinding(MCAssembler &Asm,
const MCAsmLayout &Layout) override;
bool IsSymbolRefDifferenceFullyResolvedImpl(const MCAssembler &Asm,
- const MCSymbolData &DataA,
- const MCFragment &FB,
- bool InSet,
+ const MCSymbol &SymA,
+ const MCFragment &FB, bool InSet,
bool IsPCRel) const override;
void WriteObject(MCAssembler &Asm, const MCAsmLayout &Layout) override;
@@ -271,7 +276,8 @@ public:
/// \param OS - The stream to write to.
/// \returns The constructed object writer.
MCObjectWriter *createMachObjectWriter(MCMachObjectTargetWriter *MOTW,
- raw_ostream &OS, bool IsLittleEndian);
+ raw_pwrite_stream &OS,
+ bool IsLittleEndian);
} // End llvm namespace
generated by cgit v1.2.3 (git 2.25.1) at 2025-08-06 22:38:37 +0000