RuntimeDyld(RTDyldMemoryManager*);
~RuntimeDyld();
+ /// Load an in-memory object file into the dynamic linker.
bool loadObject(MemoryBuffer *InputBuffer);
- // Get the address of our local copy of the symbol. This may or may not
- // be the address used for relocation (clients can copy the data around
- // and resolve relocatons based on where they put it).
+
+ /// Get the address of our local copy of the symbol. This may or may not
+ /// be the address used for relocation (clients can copy the data around
+ /// and resolve relocatons based on where they put it).
void *getSymbolAddress(StringRef Name);
- // Resolve the relocations for all symbols we currently know about.
+
+ /// Resolve the relocations for all symbols we currently know about.
void resolveRelocations();
/// mapSectionAddress - map a section to its target address space value.
/// for resolving library symbols, not code generated symbols.
///
void *DefaultJITMemoryManager::getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure) {
+ bool AbortOnFailure) {
// Check to see if this is one of the functions we want to intercept. Note,
// we cast to intptr_t here to silence a -pedantic warning that complains
// about casting a function pointer to a normal pointer.
}
void *MCJIT::getPointerToNamedFunction(const std::string &Name,
- bool AbortOnFailure){
+ bool AbortOnFailure) {
if (!isSymbolSearchingDisabled() && MemMgr) {
void *ptr = MemMgr->getPointerToNamedFunction(Name, false);
if (ptr)
if (AbortOnFailure) {
report_fatal_error("Program used external function '"+Name+
- "' which could not be resolved!");
+ "' which could not be resolved!");
}
return 0;
}
virtual void updateSymbolAddress(const object::SymbolRef &Sym, uint64_t Addr)
{}
- // Subclasses can override this method to provide JIT debugging support
+ // Subclasses can override these methods to provide JIT debugging support
virtual void registerWithDebugger() {}
virtual void deregisterWithDebugger() {}
};
llvm_unreachable("Attempting to remap address of unknown section!");
}
-// Subclasses can implement this method to create specialized image instances
+// Subclasses can implement this method to create specialized image instances.
// The caller owns the the pointer that is returned.
ObjectImage *RuntimeDyldImpl::createObjectImage(const MemoryBuffer *InputBuffer) {
ObjectFile *ObjFile = ObjectFile::createObjectFile(const_cast<MemoryBuffer*>
Arch = (Triple::ArchType)obj->getArch();
- LocalSymbolMap LocalSymbols; // Functions and data symbols from the
+ LocalSymbolMap LocalSymbols; // Functions and data symbols from the
// object file.
ObjSectionToIDMap LocalSections; // Used sections from the object file
CommonSymbolMap CommonSymbols; // Common symbols requiring allocation
if (SymType == object::SymbolRef::ST_Function ||
SymType == object::SymbolRef::ST_Data) {
uint64_t FileOffset;
- StringRef sData;
+ StringRef SectionData;
section_iterator si = obj->end_sections();
Check(i->getFileOffset(FileOffset));
Check(i->getSection(si));
if (si == obj->end_sections()) continue;
- Check(si->getContents(sData));
+ Check(si->getContents(SectionData));
const uint8_t* SymPtr = (const uint8_t*)InputBuffer->getBufferStart() +
(uintptr_t)FileOffset;
- uintptr_t SectOffset = (uintptr_t)(SymPtr - (const uint8_t*)sData.begin());
+ uintptr_t SectOffset = (uintptr_t)(SymPtr -
+ (const uint8_t*)SectionData.begin());
unsigned SectionID =
findOrEmitSection(*obj,
*si,
SymType == object::SymbolRef::ST_Function,
LocalSections);
- bool isGlobal = flags & SymbolRef::SF_Global;
LocalSymbols[Name.data()] = SymbolLoc(SectionID, SectOffset);
DEBUG(dbgs() << "\tFileOffset: " << format("%p", (uintptr_t)FileOffset)
<< " flags: " << flags
<< " SID: " << SectionID
<< " Offset: " << format("%p", SectOffset));
+ bool isGlobal = flags & SymbolRef::SF_Global;
if (isGlobal)
SymbolTable[Name] = SymbolLoc(SectionID, SectOffset);
}
if (CommonSize != 0)
emitCommonSymbols(*obj, CommonSymbols, CommonSize, LocalSymbols);
- // Parse and proccess relocations
+ // Parse and process relocations
DEBUG(dbgs() << "Parse relocations:\n");
for (section_iterator si = obj->begin_sections(),
se = obj->end_sections(); si != se; si.increment(err)) {
e = si->end_relocations(); i != e; i.increment(err)) {
Check(err);
- // If it's first relocation in this section, find its SectionID
+ // If it's the first relocation in this section, find its SectionID
if (isFirstRelocation) {
SectionID = findOrEmitSection(*obj, *si, true, LocalSections);
DEBUG(dbgs() << "\tSectionID: " << SectionID << "\n");
}
else {
// Even if we didn't load the section, we need to record an entry for it
- // to handle later processing (and by 'handle' I mean don't do anything
- // with these sections).
+ // to handle later processing (and by 'handle' I mean don't do anything
+ // with these sections).
Allocate = 0;
Addr = 0;
DEBUG(dbgs() << "emitSection SectionID: " << SectionID
}
void RuntimeDyldImpl::AddRelocation(const RelocationValueRef &Value,
- unsigned SectionID, uintptr_t Offset,
- uint32_t RelType) {
+ unsigned SectionID, uintptr_t Offset,
+ uint32_t RelType) {
DEBUG(dbgs() << "AddRelocation SymNamePtr: " << format("%p", Value.SymbolName)
<< " SID: " << Value.SectionID
<< " Addend: " << format("%p", Value.Addend)
class SectionEntry {
public:
- uint8_t* Address;
- size_t Size;
+ uint8_t *Address;
+ size_t Size;
uint64_t LoadAddress; // For each section, the address it will be
// considered to live at for relocations. The same
// as the pointer to the above memory block for
// hosted JITs.
- uintptr_t StubOffset; // It's used for architecturies with stub
+ uintptr_t StubOffset; // It's used for architectures with stub
// functions for far relocations like ARM.
- uintptr_t ObjAddress; // Section address in object file. It's use for
- // calculate MachO relocation addend
- SectionEntry(uint8_t* address, size_t size, uintptr_t stubOffset,
+ uintptr_t ObjAddress; // Section address in object file. It's used for
+ // calculating the MachO relocation addend.
+ SectionEntry(uint8_t *address, size_t size, uintptr_t stubOffset,
uintptr_t objAddress)
: Address(address), Size(size), LoadAddress((uintptr_t)address),
StubOffset(stubOffset), ObjAddress(objAddress) {}
public:
unsigned SectionID; // Section the relocation is contained in.
uintptr_t Offset; // Offset into the section for the relocation.
- uint32_t Data; // Relocatino data. Including type of relocation
- // and another flags and parameners from
+ uint32_t Data; // Relocation data. Including type of relocation
+ // and other flags.
intptr_t Addend; // Addend encoded in the instruction itself, if any,
// plus the offset into the source section for
// the symbol once the relocation is resolvable.
/// \brief Emits section data from the object file to the MemoryManager.
/// \param IsCode if it's true then allocateCodeSection() will be
- /// used for emmits, else allocateDataSection() will be used.
+ /// used for emits, else allocateDataSection() will be used.
/// \return SectionID.
unsigned emitSection(ObjectImage &Obj,
const SectionRef &Section,
uint32_t Type,
int64_t Addend) = 0;
- /// \brief Parses the object file relocation and store it to Relocations
- /// or SymbolRelocations. Its depend from object file type.
+ /// \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,
ObjectImage &Obj,
ObjSectionToIDMap &ObjSectionToID,
- LocalSymbolMap &Symbols, StubMap &Stubs) = 0;
+ LocalSymbolMap &Symbols,
+ StubMap &Stubs) = 0;
void resolveSymbols();
virtual ObjectImage *createObjectImage(const MemoryBuffer *InputBuffer);
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