//
//===----------------------------------------------------------------------===//
-#ifndef LLVM_RUNTIME_DYLD_IMPL_H
-#define LLVM_RUNTIME_DYLD_IMPL_H
+#ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDIMPL_H
+#define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDIMPL_H
#include "llvm/ADT/DenseMap.h"
#include "llvm/ADT/SmallVector.h"
#include "llvm/ADT/Triple.h"
#include "llvm/ExecutionEngine/ObjectImage.h"
#include "llvm/ExecutionEngine/RuntimeDyld.h"
+#include "llvm/ExecutionEngine/RuntimeDyldChecker.h"
#include "llvm/Object/ObjectFile.h"
#include "llvm/Support/Debug.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/Mutex.h"
#include "llvm/Support/SwapByteOrder.h"
#include "llvm/Support/raw_ostream.h"
-#include "llvm/Support/system_error.h"
#include <map>
+#include <system_error>
using namespace llvm;
using namespace llvm::object;
/// used to make a relocation section relative instead of symbol relative.
int64_t Addend;
+ struct SectionPair {
+ uint32_t SectionA;
+ uint32_t SectionB;
+ };
+
/// SymOffset - Section offset of the relocation entry's symbol (used for GOT
/// lookup).
- uint64_t SymOffset;
+ union {
+ uint64_t SymOffset;
+ SectionPair Sections;
+ };
/// True if this is a PCRel relocation (MachO specific).
bool IsPCRel;
bool IsPCRel, unsigned Size)
: SectionID(id), Offset(offset), RelType(type), Addend(addend),
SymOffset(0), IsPCRel(IsPCRel), Size(Size) {}
+
+ RelocationEntry(unsigned id, uint64_t offset, uint32_t type, int64_t addend,
+ unsigned SectionA, uint64_t SectionAOffset, unsigned SectionB,
+ uint64_t SectionBOffset, bool IsPCRel, unsigned Size)
+ : SectionID(id), Offset(offset), RelType(type),
+ Addend(SectionAOffset - SectionBOffset + addend), IsPCRel(IsPCRel),
+ Size(Size) {
+ Sections.SectionA = SectionA;
+ Sections.SectionB = SectionB;
+ }
};
class RelocationValueRef {
uint64_t Offset;
int64_t Addend;
const char *SymbolName;
- RelocationValueRef() : SectionID(0), Offset(0), Addend(0), SymbolName(0) {}
+ RelocationValueRef() : SectionID(0), Offset(0), Addend(0),
+ SymbolName(nullptr) {}
inline bool operator==(const RelocationValueRef &Other) const {
return SectionID == Other.SectionID && Offset == Other.Offset &&
};
class RuntimeDyldImpl {
+ friend class RuntimeDyldCheckerImpl;
+private:
+
+ uint64_t getAnySymbolRemoteAddress(StringRef Symbol) {
+ if (uint64_t InternalSymbolAddr = getSymbolLoadAddress(Symbol))
+ return InternalSymbolAddr;
+ return MemMgr->getSymbolAddress(Symbol);
+ }
+
protected:
// The MemoryManager to load objects into.
RTDyldMemoryManager *MemMgr;
+ // Attached RuntimeDyldChecker instance. Null if no instance attached.
+ RuntimeDyldCheckerImpl *Checker;
+
// A list of all sections emitted by the dynamic linker. These sections are
// referenced in the code by means of their index in this list - SectionID.
typedef SmallVector<SectionEntry, 64> SectionList;
// modules. This map is indexed by symbol name.
StringMap<RelocationList> ExternalSymbolRelocations;
+
typedef std::map<RelocationValueRef, uintptr_t> StubMap;
Triple::ArchType Arch;
void writeInt16BE(uint8_t *Addr, uint16_t Value) {
if (IsTargetLittleEndian)
- Value = sys::SwapByteOrder(Value);
+ sys::swapByteOrder(Value);
*Addr = (Value >> 8) & 0xFF;
*(Addr + 1) = Value & 0xFF;
}
void writeInt32BE(uint8_t *Addr, uint32_t Value) {
if (IsTargetLittleEndian)
- Value = sys::SwapByteOrder(Value);
+ sys::swapByteOrder(Value);
*Addr = (Value >> 24) & 0xFF;
*(Addr + 1) = (Value >> 16) & 0xFF;
*(Addr + 2) = (Value >> 8) & 0xFF;
void writeInt64BE(uint8_t *Addr, uint64_t Value) {
if (IsTargetLittleEndian)
- Value = sys::SwapByteOrder(Value);
+ sys::swapByteOrder(Value);
*Addr = (Value >> 56) & 0xFF;
*(Addr + 1) = (Value >> 48) & 0xFF;
*(Addr + 2) = (Value >> 40) & 0xFF;
/// \brief Emits long jump instruction to Addr.
/// \return Pointer to the memory area for emitting target address.
- uint8_t *createStubFunction(uint8_t *Addr);
+ uint8_t *createStubFunction(uint8_t *Addr, unsigned AbiVariant = 0);
/// \brief Resolves relocations from Relocs list with address from Value.
void resolveRelocationList(const RelocationList &Relocs, uint64_t Value);
/// \param Value Target symbol address to apply the relocation action
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).
+ /// \brief Parses one or more object file relocations (some object files use
+ /// relocation pairs) and stores it to Relocations or SymbolRelocations
+ /// (this depends on the object file type).
+ /// \return Iterator to the next relocation that needs to be parsed.
virtual relocation_iterator
processRelocationRef(unsigned SectionID, relocation_iterator RelI,
ObjectImage &Obj, ObjSectionToIDMap &ObjSectionToID,
public:
RuntimeDyldImpl(RTDyldMemoryManager *mm)
- : MemMgr(mm), ProcessAllSections(false), HasError(false) {}
+ : MemMgr(mm), Checker(nullptr), ProcessAllSections(false), HasError(false) {
+ }
virtual ~RuntimeDyldImpl();
this->ProcessAllSections = ProcessAllSections;
}
+ void setRuntimeDyldChecker(RuntimeDyldCheckerImpl *Checker) {
+ this->Checker = Checker;
+ }
+
ObjectImage *loadObject(ObjectImage *InputObject);
- void *getSymbolAddress(StringRef Name) {
+ uint8_t* getSymbolAddress(StringRef Name) {
// FIXME: Just look up as a function for now. Overly simple of course.
// Work in progress.
SymbolTableMap::const_iterator pos = GlobalSymbolTable.find(Name);
if (pos == GlobalSymbolTable.end())
- return 0;
+ return nullptr;
SymbolLoc Loc = pos->second;
return getSectionAddress(Loc.first) + Loc.second;
}
virtual void deregisterEHFrames();
- virtual void finalizeLoad(ObjSectionToIDMap &SectionMap) {}
+ virtual void finalizeLoad(ObjectImage &ObjImg, ObjSectionToIDMap &SectionMap) {}
};
} // end namespace llvm
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