diff options
Diffstat (limited to 'ELF/Arch/AMDGPU.cpp')
-rw-r--r-- | ELF/Arch/AMDGPU.cpp | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/ELF/Arch/AMDGPU.cpp b/ELF/Arch/AMDGPU.cpp new file mode 100644 index 000000000000..68e516f9e6cf --- /dev/null +++ b/ELF/Arch/AMDGPU.cpp @@ -0,0 +1,82 @@ +//===- AMDGPU.cpp ---------------------------------------------------------===// +// +// The LLVM Linker +// +// This file is distributed under the University of Illinois Open Source +// License. See LICENSE.TXT for details. +// +//===----------------------------------------------------------------------===// + +#include "Error.h" +#include "InputFiles.h" +#include "Memory.h" +#include "Symbols.h" +#include "Target.h" +#include "llvm/Object/ELF.h" +#include "llvm/Support/Endian.h" + +using namespace llvm; +using namespace llvm::object; +using namespace llvm::support::endian; +using namespace llvm::ELF; +using namespace lld; +using namespace lld::elf; + +namespace { +class AMDGPU final : public TargetInfo { +public: + AMDGPU(); + void relocateOne(uint8_t *Loc, uint32_t Type, uint64_t Val) const override; + RelExpr getRelExpr(uint32_t Type, const SymbolBody &S, + const uint8_t *Loc) const override; +}; +} // namespace + +AMDGPU::AMDGPU() { + RelativeRel = R_AMDGPU_REL64; + GotRel = R_AMDGPU_ABS64; + GotEntrySize = 8; +} + +void AMDGPU::relocateOne(uint8_t *Loc, uint32_t Type, uint64_t Val) const { + switch (Type) { + case R_AMDGPU_ABS32: + case R_AMDGPU_GOTPCREL: + case R_AMDGPU_GOTPCREL32_LO: + case R_AMDGPU_REL32: + case R_AMDGPU_REL32_LO: + write32le(Loc, Val); + break; + case R_AMDGPU_ABS64: + write64le(Loc, Val); + break; + case R_AMDGPU_GOTPCREL32_HI: + case R_AMDGPU_REL32_HI: + write32le(Loc, Val >> 32); + break; + default: + error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type)); + } +} + +RelExpr AMDGPU::getRelExpr(uint32_t Type, const SymbolBody &S, + const uint8_t *Loc) const { + switch (Type) { + case R_AMDGPU_ABS32: + case R_AMDGPU_ABS64: + return R_ABS; + case R_AMDGPU_REL32: + case R_AMDGPU_REL32_LO: + case R_AMDGPU_REL32_HI: + return R_PC; + case R_AMDGPU_GOTPCREL: + case R_AMDGPU_GOTPCREL32_LO: + case R_AMDGPU_GOTPCREL32_HI: + return R_GOT_PC; + default: + error(toString(S.File) + ": unknown relocation type: " + toString(Type)); + return R_HINT; + } +} + +TargetInfo *elf::createAMDGPUTargetInfo() { return make<AMDGPU>(); } |