#ifndef LLVM_RUNTIME_DYLD_IMPL_H
#define LLVM_RUNTIME_DYLD_IMPL_H
-#include "llvm/ExecutionEngine/RuntimeDyld.h"
-#include "llvm/ExecutionEngine/ObjectImage.h"
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/StringMap.h"
#include "llvm/ADT/Triple.h"
+#include "llvm/ExecutionEngine/ObjectImage.h"
+#include "llvm/ExecutionEngine/RuntimeDyld.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
/// Address - address in the linker's memory where the section resides.
uint8_t *Address;
- /// Size - section size.
+ /// Size - section size. Doesn't include the stubs.
size_t Size;
/// LoadAddress - the address of the section in the target process's memory.
uintptr_t ObjAddress;
SectionEntry(StringRef name, uint8_t *address, size_t size,
- uintptr_t stubOffset, uintptr_t objAddress)
+ uintptr_t objAddress)
: Name(name), Address(address), Size(size), LoadAddress((uintptr_t)address),
- StubOffset(stubOffset), ObjAddress(objAddress) {}
+ StubOffset(size), ObjAddress(objAddress) {}
};
/// RelocationEntry - used to represent relocations internally in the dynamic
/// used to make a relocation section relative instead of symbol relative.
intptr_t Addend;
+ /// True if this is a PCRel relocation (MachO specific).
+ bool IsPCRel;
+
+ /// The size of this relocation (MachO specific).
+ unsigned Size;
+
RelocationEntry(unsigned id, uint64_t offset, uint32_t type, int64_t addend)
- : SectionID(id), Offset(offset), RelType(type), Addend(addend) {}
-};
+ : SectionID(id), Offset(offset), RelType(type), Addend(addend),
+ IsPCRel(false), Size(0) {}
-/// ObjRelocationInfo - relocation information as read from the object file.
-/// Used to pass around data taken from object::RelocationRef, together with
-/// the section to which the relocation points (represented by a SectionID).
-class ObjRelocationInfo {
-public:
- unsigned SectionID;
- uint64_t Offset;
- SymbolRef Symbol;
- uint64_t Type;
- int64_t AdditionalInfo;
+ RelocationEntry(unsigned id, uint64_t offset, uint32_t type, int64_t addend,
+ bool IsPCRel, unsigned Size)
+ : SectionID(id), Offset(offset), RelType(type), Addend(addend),
+ IsPCRel(IsPCRel), Size(Size) {}
};
class RelocationValueRef {
Triple::ArchType Arch;
inline unsigned getMaxStubSize() {
+ if (Arch == Triple::aarch64)
+ return 20; // movz; movk; movk; movk; br
if (Arch == Triple::arm || Arch == Triple::thumb)
return 8; // 32-bit instruction and 32-bit address
- else if (Arch == Triple::mipsel or Arch == Triple::mips)
+ else if (Arch == Triple::mipsel || Arch == Triple::mips)
return 16;
else if (Arch == Triple::ppc64)
return 44;
+ else if (Arch == Triple::x86_64)
+ return 8; // GOT
+ else if (Arch == Triple::systemz)
+ return 16;
else
return 0;
}
+ inline unsigned getStubAlignment() {
+ if (Arch == Triple::systemz)
+ return 8;
+ else
+ return 1;
+ }
+
bool HasError;
std::string ErrorStr;
return (uint8_t*)Sections[SectionID].Address;
}
- // Subclasses can override this method to get the alignment requirement of
- // a common symbol. Returns no alignment requirement if not implemented.
- virtual unsigned getCommonSymbolAlignment(const SymbolRef &Sym) {
- return 0;
- }
-
-
void writeInt16BE(uint8_t *Addr, uint16_t Value) {
- if (sys::isLittleEndianHost())
+ if (sys::IsLittleEndianHost)
Value = sys::SwapByteOrder(Value);
*Addr = (Value >> 8) & 0xFF;
*(Addr+1) = Value & 0xFF;
}
void writeInt32BE(uint8_t *Addr, uint32_t Value) {
- if (sys::isLittleEndianHost())
+ if (sys::IsLittleEndianHost)
Value = sys::SwapByteOrder(Value);
*Addr = (Value >> 24) & 0xFF;
*(Addr+1) = (Value >> 16) & 0xFF;
}
void writeInt64BE(uint8_t *Addr, uint64_t Value) {
- if (sys::isLittleEndianHost())
+ if (sys::IsLittleEndianHost)
Value = sys::SwapByteOrder(Value);
*Addr = (Value >> 56) & 0xFF;
*(Addr+1) = (Value >> 48) & 0xFF;
/// \brief Resolves relocations from Relocs list with address from Value.
void resolveRelocationList(const RelocationList &Relocs, uint64_t Value);
- void resolveRelocationEntry(const RelocationEntry &RE, uint64_t Value);
/// \brief A object file specific relocation resolver
- /// \param Section The section where the relocation is being applied
- /// \param Offset The offset into the section for this relocation
+ /// \param RE The relocation to be resolved
/// \param Value Target symbol address to apply the relocation action
- /// \param Type object file specific relocation type
- /// \param Addend A constant addend used to compute the value to be stored
- /// into the relocatable field
- virtual void resolveRelocation(const SectionEntry &Section,
- uint64_t Offset,
- uint64_t Value,
- uint32_t Type,
- int64_t Addend) = 0;
+ virtual void resolveRelocation(const RelocationEntry &RE, uint64_t Value) = 0;
/// \brief Parses the object file relocation and stores it to Relocations
/// or SymbolRelocations (this depends on the object file type).
- virtual void processRelocationRef(const ObjRelocationInfo &Rel,
+ virtual void processRelocationRef(unsigned SectionID,
+ RelocationRef RelI,
ObjectImage &Obj,
ObjSectionToIDMap &ObjSectionToID,
const SymbolTableMap &Symbols,
StringRef getErrorString() { return ErrorStr; }
virtual bool isCompatibleFormat(const ObjectBuffer *Buffer) const = 0;
+
+ virtual StringRef getEHFrameSection();
};
} // end namespace llvm
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