mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2025-11-04 05:17:07 +00:00
973e54ac96
All symbols have to be stored in the global symbol to enable cross-rtdyld-instance linking, so the local symbol table content is redundant. git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@222867 91177308-0d34-0410-b5e6-96231b3b80d8
133 lines
4.8 KiB
C++
133 lines
4.8 KiB
C++
//===-- RuntimeDyldELF.h - Run-time dynamic linker for MC-JIT ---*- C++ -*-===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
//
|
|
// ELF support for MC-JIT runtime dynamic linker.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#ifndef LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDELF_H
|
|
#define LLVM_LIB_EXECUTIONENGINE_RUNTIMEDYLD_RUNTIMEDYLDELF_H
|
|
|
|
#include "RuntimeDyldImpl.h"
|
|
#include "llvm/ADT/DenseMap.h"
|
|
|
|
using namespace llvm;
|
|
|
|
namespace llvm {
|
|
namespace {
|
|
// Helper for extensive error checking in debug builds.
|
|
std::error_code Check(std::error_code Err) {
|
|
if (Err) {
|
|
report_fatal_error(Err.message());
|
|
}
|
|
return Err;
|
|
}
|
|
|
|
} // end anonymous namespace
|
|
|
|
class RuntimeDyldELF : public RuntimeDyldImpl {
|
|
|
|
void resolveRelocation(const SectionEntry &Section, uint64_t Offset,
|
|
uint64_t Value, uint32_t Type, int64_t Addend,
|
|
uint64_t SymOffset = 0);
|
|
|
|
void resolveX86_64Relocation(const SectionEntry &Section, uint64_t Offset,
|
|
uint64_t Value, uint32_t Type, int64_t Addend,
|
|
uint64_t SymOffset);
|
|
|
|
void resolveX86Relocation(const SectionEntry &Section, uint64_t Offset,
|
|
uint32_t Value, uint32_t Type, int32_t Addend);
|
|
|
|
void resolveAArch64Relocation(const SectionEntry &Section, uint64_t Offset,
|
|
uint64_t Value, uint32_t Type, int64_t Addend);
|
|
|
|
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 resolvePPC64Relocation(const SectionEntry &Section, uint64_t Offset,
|
|
uint64_t Value, uint32_t Type, int64_t Addend);
|
|
|
|
void resolveSystemZRelocation(const SectionEntry &Section, uint64_t Offset,
|
|
uint64_t Value, uint32_t Type, int64_t Addend);
|
|
|
|
unsigned getMaxStubSize() override {
|
|
if (Arch == Triple::aarch64 || Arch == Triple::aarch64_be)
|
|
return 20; // movz; movk; movk; movk; br
|
|
if (Arch == Triple::arm || Arch == Triple::thumb)
|
|
return 8; // 32-bit instruction and 32-bit address
|
|
else if (Arch == Triple::mipsel || Arch == Triple::mips)
|
|
return 16;
|
|
else if (Arch == Triple::ppc64 || Arch == Triple::ppc64le)
|
|
return 44;
|
|
else if (Arch == Triple::x86_64)
|
|
return 6; // 2-byte jmp instruction + 32-bit relative address
|
|
else if (Arch == Triple::systemz)
|
|
return 16;
|
|
else
|
|
return 0;
|
|
}
|
|
|
|
unsigned getStubAlignment() override {
|
|
if (Arch == Triple::systemz)
|
|
return 8;
|
|
else
|
|
return 1;
|
|
}
|
|
|
|
void findPPC64TOCSection(const ObjectFile &Obj,
|
|
ObjSectionToIDMap &LocalSections,
|
|
RelocationValueRef &Rel);
|
|
void findOPDEntrySection(const ObjectFile &Obj,
|
|
ObjSectionToIDMap &LocalSections,
|
|
RelocationValueRef &Rel);
|
|
|
|
uint64_t findGOTEntry(uint64_t LoadAddr, uint64_t Offset);
|
|
size_t getGOTEntrySize();
|
|
|
|
void updateGOTEntries(StringRef Name, uint64_t Addr) override;
|
|
|
|
// Relocation entries for symbols whose position-independent offset is
|
|
// updated in a global offset table.
|
|
typedef SmallVector<RelocationValueRef, 2> GOTRelocations;
|
|
GOTRelocations GOTEntries; // List of entries requiring finalization.
|
|
SmallVector<std::pair<SID, GOTRelocations>, 8> GOTs; // Allocated tables.
|
|
|
|
// When a module is loaded we save the SectionID of the EH frame section
|
|
// in a table until we receive a request to register all unregistered
|
|
// EH frame sections with the memory manager.
|
|
SmallVector<SID, 2> UnregisteredEHFrameSections;
|
|
SmallVector<SID, 2> RegisteredEHFrameSections;
|
|
|
|
public:
|
|
RuntimeDyldELF(RTDyldMemoryManager *mm);
|
|
virtual ~RuntimeDyldELF();
|
|
|
|
std::unique_ptr<RuntimeDyld::LoadedObjectInfo>
|
|
loadObject(const object::ObjectFile &O) override;
|
|
|
|
void resolveRelocation(const RelocationEntry &RE, uint64_t Value) override;
|
|
relocation_iterator
|
|
processRelocationRef(unsigned SectionID, relocation_iterator RelI,
|
|
const ObjectFile &Obj,
|
|
ObjSectionToIDMap &ObjSectionToID,
|
|
StubMap &Stubs) override;
|
|
bool isCompatibleFile(const object::ObjectFile &Obj) const override;
|
|
void registerEHFrames() override;
|
|
void deregisterEHFrames() override;
|
|
void finalizeLoad(const ObjectFile &Obj,
|
|
ObjSectionToIDMap &SectionMap) override;
|
|
};
|
|
|
|
} // end namespace llvm
|
|
|
|
#endif
|