#include "llvm/ExecutionEngine/RuntimeDyld.h"
#include "JITRegistrar.h"
#include "ObjectImageCommon.h"
+#include "RuntimeDyldCheckerImpl.h"
#include "RuntimeDyldELF.h"
#include "RuntimeDyldImpl.h"
#include "RuntimeDyldMachO.h"
void RuntimeDyldImpl::deregisterEHFrames() {}
+#ifndef NDEBUG
+static void dumpSectionMemory(const SectionEntry &S, StringRef State) {
+ dbgs() << "----- Contents of section " << S.Name << " " << State << " -----";
+
+ if (S.Address == nullptr) {
+ dbgs() << "\n <section not emitted>\n";
+ return;
+ }
+
+ const unsigned ColsPerRow = 16;
+
+ uint8_t *DataAddr = S.Address;
+ uint64_t LoadAddr = S.LoadAddress;
+
+ unsigned StartPadding = LoadAddr & (ColsPerRow - 1);
+ unsigned BytesRemaining = S.Size;
+
+ if (StartPadding) {
+ dbgs() << "\n" << format("0x%016" PRIx64, LoadAddr & ~(ColsPerRow - 1)) << ":";
+ while (StartPadding--)
+ dbgs() << " ";
+ }
+
+ while (BytesRemaining > 0) {
+ if ((LoadAddr & (ColsPerRow - 1)) == 0)
+ dbgs() << "\n" << format("0x%016" PRIx64, LoadAddr) << ":";
+
+ dbgs() << " " << format("%02x", *DataAddr);
+
+ ++DataAddr;
+ ++LoadAddr;
+ --BytesRemaining;
+ }
+
+ dbgs() << "\n";
+}
+#endif
+
// Resolve the relocations for all symbols we currently know about.
void RuntimeDyldImpl::resolveRelocations() {
MutexGuard locked(lock);
// entry provides the section to which the relocation will be applied.
uint64_t Addr = Sections[i].LoadAddress;
DEBUG(dbgs() << "Resolving relocations Section #" << i << "\t"
- << format("%p", (uint8_t *)Addr) << "\n");
+ << format("0x%x", Addr) << "\n");
+ DEBUG(dumpSectionMemory(Sections[i], "before relocations"));
resolveRelocationList(Relocations[i], Addr);
+ DEBUG(dumpSectionMemory(Sections[i], "after relocations"));
Relocations.erase(i);
}
}
if (std::error_code EC = Sym.getSection(SecI))
return EC;
- if (SecI == Obj->section_end()) {
- Result = UnknownAddressOrSize;
- return object_error::success;
- }
+ if (SecI == Obj->section_end()) {
+ Result = UnknownAddressOrSize;
+ return object_error::success;
+ }
uint64_t SectionAddress;
if (std::error_code EC = SecI->getAddress(SectionAddress))
return object_error::success;
}
-ObjectImage *RuntimeDyldImpl::loadObject(ObjectImage *InputObject) {
+std::unique_ptr<ObjectImage>
+RuntimeDyldImpl::loadObject(std::unique_ptr<ObjectImage> Obj) {
MutexGuard locked(lock);
- std::unique_ptr<ObjectImage> Obj(InputObject);
if (!Obj)
return nullptr;
for (; I != E;)
I = processRelocationRef(SectionID, I, *Obj, LocalSections, LocalSymbols,
Stubs);
+
+ // If there is an attached checker, notify it about the stubs for this
+ // section so that they can be verified.
+ if (Checker)
+ Checker->registerStubMap(Obj->getImageName(), SectionID, Stubs);
}
// Give the subclasses a chance to tie-up any loose ends.
finalizeLoad(*Obj, LocalSections);
- return Obj.release();
+ return Obj;
}
// A helper method for computeTotalAllocSize.
return StubBufSize;
}
+uint64_t RuntimeDyldImpl::readBytesUnaligned(uint8_t *Src,
+ unsigned Size) const {
+ uint64_t Result = 0;
+ if (IsTargetLittleEndian) {
+ Src += Size - 1;
+ while (Size--)
+ Result = (Result << 8) | *Src--;
+ } else
+ while (Size--)
+ Result = (Result << 8) | *Src++;
+
+ return Result;
+}
+
+void RuntimeDyldImpl::writeBytesUnaligned(uint64_t Value, uint8_t *Dst,
+ unsigned Size) const {
+ if (IsTargetLittleEndian) {
+ while (Size--) {
+ *Dst++ = Value & 0xFF;
+ Value >>= 8;
+ }
+ } else {
+ Dst += Size - 1;
+ while (Size--) {
+ *Dst-- = Value & 0xFF;
+ Value >>= 8;
+ }
+ }
+}
+
void RuntimeDyldImpl::emitCommonSymbols(ObjectImage &Obj,
const CommonSymbolMap &CommonSymbols,
uint64_t TotalSize,
if (!Addr)
report_fatal_error("Unable to allocate memory for common symbols!");
uint64_t Offset = 0;
- Sections.push_back(SectionEntry(StringRef(), Addr, TotalSize, 0));
+ Sections.push_back(SectionEntry("<common symbols>", Addr, TotalSize, 0));
memset(Addr, 0, TotalSize);
DEBUG(dbgs() << "emitCommonSection SectionID: " << SectionID << " new addr: "
}
Sections.push_back(SectionEntry(Name, Addr, DataSize, (uintptr_t)pData));
+
+ if (Checker)
+ Checker->registerSection(Obj.getImageName(), SectionID);
+
return SectionID;
}
uint8_t *RuntimeDyldImpl::createStubFunction(uint8_t *Addr,
unsigned AbiVariant) {
- if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be ||
- Arch == Triple::arm64 || Arch == Triple::arm64_be) {
+ if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be) {
// This stub has to be able to access the full address space,
// since symbol lookup won't necessarily find a handy, in-range,
// PLT stub for functions which could be anywhere.
// Addr is a uint64_t because we can't assume the pointer width
// of the target is the same as that of the host. Just use a generic
// "big enough" type.
+ DEBUG(dbgs() << "Reassigning address for section "
+ << SectionID << " (" << Sections[SectionID].Name << "): "
+ << format("0x%016" PRIx64, Sections[SectionID].LoadAddress) << " -> "
+ << format("0x%016" PRIx64, Addr) << "\n");
Sections[SectionID].LoadAddress = Addr;
}
Dyld = nullptr;
MM = mm;
ProcessAllSections = false;
+ Checker = nullptr;
}
-RuntimeDyld::~RuntimeDyld() { delete Dyld; }
+RuntimeDyld::~RuntimeDyld() {}
static std::unique_ptr<RuntimeDyldELF>
-createRuntimeDyldELF(RTDyldMemoryManager *MM, bool ProcessAllSections) {
+createRuntimeDyldELF(RTDyldMemoryManager *MM, bool ProcessAllSections,
+ RuntimeDyldCheckerImpl *Checker) {
std::unique_ptr<RuntimeDyldELF> Dyld(new RuntimeDyldELF(MM));
Dyld->setProcessAllSections(ProcessAllSections);
+ Dyld->setRuntimeDyldChecker(Checker);
return Dyld;
}
static std::unique_ptr<RuntimeDyldMachO>
createRuntimeDyldMachO(Triple::ArchType Arch, RTDyldMemoryManager *MM,
- bool ProcessAllSections) {
+ bool ProcessAllSections, RuntimeDyldCheckerImpl *Checker) {
std::unique_ptr<RuntimeDyldMachO> Dyld(RuntimeDyldMachO::create(Arch, MM));
Dyld->setProcessAllSections(ProcessAllSections);
+ Dyld->setRuntimeDyldChecker(Checker);
return Dyld;
}
-ObjectImage *RuntimeDyld::loadObject(std::unique_ptr<ObjectFile> InputObject) {
+std::unique_ptr<ObjectImage>
+RuntimeDyld::loadObject(std::unique_ptr<ObjectFile> InputObject) {
std::unique_ptr<ObjectImage> InputImage;
ObjectFile &Obj = *InputObject;
if (InputObject->isELF()) {
InputImage.reset(RuntimeDyldELF::createObjectImageFromFile(std::move(InputObject)));
if (!Dyld)
- Dyld = createRuntimeDyldELF(MM, ProcessAllSections).release();
+ Dyld = createRuntimeDyldELF(MM, ProcessAllSections, Checker);
} else if (InputObject->isMachO()) {
InputImage.reset(RuntimeDyldMachO::createObjectImageFromFile(std::move(InputObject)));
if (!Dyld)
Dyld = createRuntimeDyldMachO(
- static_cast<Triple::ArchType>(InputImage->getArch()),
- MM, ProcessAllSections).release();
+ static_cast<Triple::ArchType>(InputImage->getArch()), MM,
+ ProcessAllSections, Checker);
} else
report_fatal_error("Incompatible object format!");
if (!Dyld->isCompatibleFile(&Obj))
report_fatal_error("Incompatible object format!");
- Dyld->loadObject(InputImage.get());
- return InputImage.release();
+ return Dyld->loadObject(std::move(InputImage));
}
-ObjectImage *RuntimeDyld::loadObject(ObjectBuffer *InputBuffer) {
+std::unique_ptr<ObjectImage>
+RuntimeDyld::loadObject(std::unique_ptr<ObjectBuffer> InputBuffer) {
std::unique_ptr<ObjectImage> InputImage;
sys::fs::file_magic Type = sys::fs::identify_magic(InputBuffer->getBuffer());
+ auto *InputBufferPtr = InputBuffer.get();
switch (Type) {
case sys::fs::file_magic::elf_relocatable:
case sys::fs::file_magic::elf_executable:
case sys::fs::file_magic::elf_shared_object:
case sys::fs::file_magic::elf_core:
- InputImage.reset(RuntimeDyldELF::createObjectImage(InputBuffer));
+ InputImage = RuntimeDyldELF::createObjectImage(std::move(InputBuffer));
if (!Dyld)
- Dyld = createRuntimeDyldELF(MM, ProcessAllSections).release();
+ Dyld = createRuntimeDyldELF(MM, ProcessAllSections, Checker);
break;
case sys::fs::file_magic::macho_object:
case sys::fs::file_magic::macho_executable:
case sys::fs::file_magic::macho_bundle:
case sys::fs::file_magic::macho_dynamically_linked_shared_lib_stub:
case sys::fs::file_magic::macho_dsym_companion:
- InputImage.reset(RuntimeDyldMachO::createObjectImage(InputBuffer));
+ InputImage = RuntimeDyldMachO::createObjectImage(std::move(InputBuffer));
if (!Dyld)
Dyld = createRuntimeDyldMachO(
- static_cast<Triple::ArchType>(InputImage->getArch()),
- MM, ProcessAllSections).release();
+ static_cast<Triple::ArchType>(InputImage->getArch()), MM,
+ ProcessAllSections, Checker);
break;
case sys::fs::file_magic::unknown:
case sys::fs::file_magic::bitcode:
report_fatal_error("Incompatible object format!");
}
- if (!Dyld->isCompatibleFormat(InputBuffer))
+ if (!Dyld->isCompatibleFormat(InputBufferPtr))
report_fatal_error("Incompatible object format!");
- Dyld->loadObject(InputImage.get());
- return InputImage.release();
+ return Dyld->loadObject(std::move(InputImage));
}
-void *RuntimeDyld::getSymbolAddress(StringRef Name) {
+void *RuntimeDyld::getSymbolAddress(StringRef Name) const {
if (!Dyld)
return nullptr;
return Dyld->getSymbolAddress(Name);
}
-uint64_t RuntimeDyld::getSymbolLoadAddress(StringRef Name) {
+uint64_t RuntimeDyld::getSymbolLoadAddress(StringRef Name) const {
if (!Dyld)
return 0;
return Dyld->getSymbolLoadAddress(Name);
projects / oota-llvm.git / blobdiff