9#ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_TARGETS_RUNTIMEDYLDMACHOARM_H
10#define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_TARGETS_RUNTIMEDYLDMACHOARM_H
12#include "../RuntimeDyldMachO.h"
14#define DEBUG_TYPE "dyld"
38 return Flags.takeError();
53 auto &Entry = KV.second;
55 Sections[Entry.getSectionID()].getObjAddress() + Entry.getOffset();
56 if (TargetObjAddr == SymbolObjAddr)
64 uint8_t *LocalAddress = Section.getAddressWithOffset(RE.
Offset);
73 return SignExtend32<26>(Temp << 2);
82 if ((HighInsn & 0xf800) != 0xf000)
83 return make_error<StringError>(
"Unrecognized thumb branch encoding "
88 if ((LowInsn & 0xf800) != 0xf800)
89 return make_error<StringError>(
"Unrecognized thumb branch encoding "
93 return SignExtend64<23>(((HighInsn & 0x7ff) << 12) |
94 ((LowInsn & 0x7ff) << 1));
112 bool TargetIsLocalThumbFunc =
false;
114 auto Symbol = RelI->getSymbol();
116 if (
auto TargetNameOrErr = Symbol->getName())
117 TargetName = *TargetNameOrErr;
119 return TargetNameOrErr.takeError();
126 TargetIsLocalThumbFunc =
127 EntryItr->second.getFlags().getTargetFlags() &
134 return processHALFSECTDIFFRelocation(SectionID, RelI, Obj,
138 TargetIsLocalThumbFunc);
153 return make_error<RuntimeDyldError>((
"MachO ARM relocation type " +
155 " is out of range").str());
163 return AddendOrErr.takeError();
170 return ValueOrErr.takeError();
176 Value.IsStubThumb =
true;
190 processBranchRelocation(RE,
Value, Stubs);
193 if (
Value.SymbolName)
205 uint8_t *LocalAddress = Section.getAddressWithOffset(RE.
Offset);
210 uint64_t FinalAddress = Section.getLoadAddressWithOffset(RE.
Offset);
211 Value -= FinalAddress;
221 assert((HighInsn & 0xf800) == 0xf000 &&
222 "Unrecognized thumb branch encoding (BR22 high bits)");
223 HighInsn = (HighInsn & 0xf800) | ((
Value >> 12) & 0x7ff);
226 assert((LowInsn & 0xf800) == 0xf800 &&
227 "Unrecognized thumb branch encoding (BR22 low bits)");
228 LowInsn = (LowInsn & 0xf800) | ((
Value >> 1) & 0x7ff);
262 "Unexpected HALFSECTDIFF relocation value.");
267 bool IsThumb = RE.
Size & 0x2;
275 ((
Value & 0x0800) >> 1) | ((
Value & 0x0700) << 20) |
276 ((
Value & 0x00ff) << 16);
296 if (
Name ==
"__nl_symbol_ptr")
310 RuntimeDyldMachO::StubMap::const_iterator i = Stubs.find(
Value);
312 if (i != Stubs.end()) {
313 Addr = Section.getAddressWithOffset(i->second);
316 assert(Section.getStubOffset() % 4 == 0 &&
"Misaligned stub");
317 Stubs[
Value] = Section.getStubOffset();
320 StubOpcode = 0xe51ff004;
322 StubOpcode = 0xf000f8df;
325 Addr = Section.getAddressWithOffset(Section.getStubOffset());
327 uint8_t *StubTargetAddr =
Addr + 4;
329 RE.
SectionID, StubTargetAddr - Section.getAddress(),
332 if (
Value.SymbolName)
357 bool IsThumb = HalfDiffKindBits & 0x2;
363 uint8_t *LocalAddress =
Section.getAddressWithOffset(
Offset);
367 Immediate = ((Immediate & 0x0000000f) << 12) |
368 ((Immediate & 0x00000400) << 1) |
369 ((Immediate & 0x70000000) >> 20) |
370 ((Immediate & 0x00ff0000) >> 16);
372 Immediate = ((Immediate >> 4) & 0xf000) | (Immediate & 0xfff);
381 uint64_t SectionAOffset = AddrA - SectionABase;
383 bool IsCode = SectionA.
isText();
385 if (
auto SectionAIDOrErr =
387 SectionAID = *SectionAIDOrErr;
389 return SectionAIDOrErr.takeError();
395 uint64_t SectionBOffset = AddrB - SectionBBase;
398 if (
auto SectionBIDOrErr =
400 SectionBID = *SectionBIDOrErr;
402 return SectionBIDOrErr.takeError();
405 unsigned Shift = (HalfDiffKindBits & 0x1) ? 16 : 0;
406 uint32_t FullImmVal = (Immediate << Shift) | (OtherHalf << (16 - Shift));
407 int64_t Addend = FullImmVal - (AddrA - AddrB);
413 <<
", AddrB: " << AddrB <<
", Addend: " << Addend
414 <<
", SectionA ID: " << SectionAID <<
", SectionAOffset: "
415 << SectionAOffset <<
", SectionB ID: " << SectionBID
416 <<
", SectionBOffset: " << SectionBOffset <<
"\n");
418 SectionAOffset, SectionBID, SectionBOffset, IsPCRel,
SmallVector< AArch64_IMM::ImmInsnModel, 4 > Insn
#define UNIMPLEMENTED_RELOC(RelType)
assert(ImpDefSCC.getReg()==AMDGPU::SCC &&ImpDefSCC.isDef())
static ARMJITSymbolFlags fromObjectSymbol(const object::SymbolRef &Symbol)
Lightweight error class with error context and mandatory checking.
static ErrorSuccess success()
Create a success value.
Tagged union holding either a T or a Error.
Flags for symbols in the JIT.
Symbol resolution interface.
RelocationEntry - used to represent relocations internally in the dynamic linker.
unsigned Size
The size of this relocation (MachO specific).
uint32_t RelType
RelType - relocation type.
uint64_t Offset
Offset - offset into the section.
bool IsPCRel
True if this is a PCRel relocation (MachO specific).
int64_t Addend
Addend - the relocation addend encoded in the instruction itself.
unsigned SectionID
SectionID - the section this relocation points to.
Interface for looking up the initializer for a variable name, used by Init::resolveReferences.
std::map< SectionRef, unsigned > ObjSectionToIDMap
std::map< RelocationValueRef, uintptr_t > StubMap
void addRelocationForSymbol(const RelocationEntry &RE, StringRef SymbolName)
void addRelocationForSection(const RelocationEntry &RE, unsigned SectionID)
Expected< unsigned > findOrEmitSection(const ObjectFile &Obj, const SectionRef &Section, bool IsCode, ObjSectionToIDMap &LocalSections)
Find Section in LocalSections.
void writeBytesUnaligned(uint64_t Value, uint8_t *Dst, unsigned Size) const
Endian-aware write.
uint64_t readBytesUnaligned(uint8_t *Src, unsigned Size) const
Endian-aware read Read the least significant Size bytes from Src.
RTDyldSymbolTable GlobalSymbolTable
virtual Expected< JITSymbolFlags > getJITSymbolFlags(const SymbolRef &Sym)
Generate JITSymbolFlags from a libObject symbol.
uint64_t modifyAddressBasedOnFlags(uint64_t Addr, JITSymbolFlags Flags) const override
Modify the given target address based on the given symbol flags.
Error finalizeSection(const ObjectFile &Obj, unsigned SectionID, const SectionRef &Section)
RuntimeDyldMachOARM(RuntimeDyld::MemoryManager &MM, JITSymbolResolver &Resolver)
void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override
A object file specific relocation resolver.
Expected< int64_t > decodeAddend(const RelocationEntry &RE) const
Expected< JITSymbolFlags > getJITSymbolFlags(const SymbolRef &SR) override
Generate JITSymbolFlags from a libObject symbol.
bool isAddrTargetThumb(unsigned SectionID, uint64_t Offset)
Align getStubAlignment() override
unsigned getMaxStubSize() const override
Expected< relocation_iterator > processRelocationRef(unsigned SectionID, relocation_iterator RelI, const ObjectFile &BaseObjT, ObjSectionToIDMap &ObjSectionToID, StubMap &Stubs) override
Parses one or more object file relocations (some object files use relocation pairs) and stores it to ...
RuntimeDyldMachOTarget - Templated base class for generic MachO linker algorithms and data structures...
static section_iterator getSectionByAddress(const MachOObjectFile &Obj, uint64_t Addr)
int64_t memcpyAddend(const RelocationEntry &RE) const
This convenience method uses memcpy to extract a contiguous addend (the addend size and offset are ta...
Error populateIndirectSymbolPointersSection(const MachOObjectFile &Obj, const SectionRef &PTSection, unsigned PTSectionID)
void makeValueAddendPCRel(RelocationValueRef &Value, const relocation_iterator &RI, unsigned OffsetToNextPC)
Make the RelocationValueRef addend PC-relative.
RelocationEntry getRelocationEntry(unsigned SectionID, const ObjectFile &BaseTObj, const relocation_iterator &RI) const
Given a relocation_iterator for a non-scattered relocation, construct a RelocationEntry and fill in t...
Expected< RelocationValueRef > getRelocationValueRef(const ObjectFile &BaseTObj, const relocation_iterator &RI, const RelocationEntry &RE, ObjSectionToIDMap &ObjSectionToID)
Construct a RelocationValueRef representing the relocation target.
Expected< relocation_iterator > processScatteredVANILLA(unsigned SectionID, relocation_iterator RelI, const ObjectFile &BaseObjT, RuntimeDyldMachO::ObjSectionToIDMap &ObjSectionToID, bool TargetIsLocalThumbFunc=false)
Process a scattered vanilla relocation.
void dumpRelocationToResolve(const RelocationEntry &RE, uint64_t Value) const
Dump information about the relocation entry (RE) and resolved value.
SectionEntry - represents a section emitted into memory by the dynamic linker.
iterator find(StringRef Key)
StringRef - Represent a constant reference to a string, i.e.
Twine - A lightweight data structure for efficiently representing the concatenation of temporary valu...
LLVM Value Representation.
section_iterator section_end() const override
uint32_t getScatteredRelocationValue(const MachO::any_relocation_info &RE) const
unsigned getAnyRelocationType(const MachO::any_relocation_info &RE) const
bool getPlainRelocationExternal(const MachO::any_relocation_info &RE) const
unsigned getAnyRelocationPCRel(const MachO::any_relocation_info &RE) const
unsigned getAnyRelocationLength(const MachO::any_relocation_info &RE) const
MachO::any_relocation_info getRelocation(DataRefImpl Rel) const
bool isRelocationScattered(const MachO::any_relocation_info &RE) const
unsigned getAnyRelocationAddress(const MachO::any_relocation_info &RE) const
This class is the base class for all object file types.
This is a value type class that represents a single section in the list of sections in the object fil...
uint64_t getAddress() const
bool isText() const
Whether this section contains instructions.
This is a value type class that represents a single symbol in the list of symbols in the object file.
#define llvm_unreachable(msg)
Marks that the current location is not supposed to be reachable.
@ ARM_RELOC_LOCAL_SECTDIFF
@ ARM_RELOC_HALF_SECTDIFF
This is an optimization pass for GlobalISel generic memory operations.
std::error_code inconvertibleErrorCode()
The value returned by this function can be returned from convertToErrorCode for Error values where no...
raw_ostream & dbgs()
dbgs() - This returns a reference to a raw_ostream for debugging messages.
void consumeError(Error Err)
Consume a Error without doing anything.
This struct is a compact representation of a valid (non-zero power of two) alignment.