[mips][rtdyld] Move MIPS relocation resolution to a subclass and implement N32 relocations
N32 relocations are only correct for individual relocations at the moment.
Support for relocation composition will follow in a later patch.
Patch By: Daniel Sanders
Reviwers: vkalintiris, atanasyan
Differential Revision: https://reviews.llvm.org/D27467
llvm-svn: 289532
diff --git a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
index b192b32..796127a 100644
--- a/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
+++ b/llvm/lib/ExecutionEngine/RuntimeDyld/RuntimeDyldELF.h
@@ -43,9 +43,6 @@
void resolveARMRelocation(const SectionEntry &Section, uint64_t Offset,
uint32_t Value, uint32_t Type, int32_t Addend);
- void resolveMIPSRelocation(const SectionEntry &Section, uint64_t Offset,
- uint32_t Value, uint32_t Type, int32_t Addend);
-
void resolvePPC32Relocation(const SectionEntry &Section, uint64_t Offset,
uint64_t Value, uint32_t Type, int64_t Addend);
@@ -55,23 +52,6 @@
void resolveSystemZRelocation(const SectionEntry &Section, uint64_t Offset,
uint64_t Value, uint32_t Type, int64_t Addend);
- void resolveMIPSN32Relocation(const SectionEntry &Section, uint64_t Offset,
- uint64_t Value, uint32_t Type, int64_t Addend,
- uint64_t SymOffset, SID SectionID);
- void resolveMIPSN64Relocation(const SectionEntry &Section, uint64_t Offset,
- uint64_t Value, uint32_t Type, int64_t Addend,
- uint64_t SymOffset, SID SectionID);
-
- int64_t evaluateMIPS32Relocation(const SectionEntry &Section, uint64_t Offset,
- uint64_t Value, uint32_t Type);
- int64_t evaluateMIPS64Relocation(const SectionEntry &Section,
- uint64_t Offset, uint64_t Value,
- uint32_t Type, int64_t Addend,
- uint64_t SymOffset, SID SectionID);
-
- void applyMIPSRelocation(uint8_t *TargetPtr, int64_t CalculatedValue,
- uint32_t Type);
-
unsigned getMaxStubSize() override {
if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be)
return 20; // movz; movk; movk; movk; br
@@ -104,9 +84,10 @@
Error findOPDEntrySection(const ELFObjectFileBase &Obj,
ObjSectionToIDMap &LocalSections,
RelocationValueRef &Rel);
-
+protected:
size_t getGOTEntrySize();
+private:
SectionEntry &getSection(unsigned SectionID) { return Sections[SectionID]; }
// Allocate no GOT entries for use in the given section.
@@ -143,10 +124,12 @@
// that consume more than one slot)
unsigned CurrentGOTIndex;
+protected:
// A map from section to a GOT section that has entries for section's GOT
// relocations. (Mips64 specific)
DenseMap<SID, SID> SectionToGOTMap;
+private:
// A map to avoid duplicate got entries (Mips64 specific)
StringMap<uint64_t> GOTSymbolOffsets;
@@ -167,6 +150,10 @@
JITSymbolResolver &Resolver);
~RuntimeDyldELF() override;
+ static std::unique_ptr<RuntimeDyldELF>
+ create(Triple::ArchType Arch, RuntimeDyld::MemoryManager &MemMgr,
+ JITSymbolResolver &Resolver);
+
std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
loadObject(const object::ObjectFile &O) override;