1 //===- AMDGPU.cpp ---------------------------------------------------------===//
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "InputFiles.h"
13 #include "lld/Common/ErrorHandler.h"
14 #include "llvm/Object/ELF.h"
15 #include "llvm/Support/Endian.h"
18 using namespace llvm::object;
19 using namespace llvm::support::endian;
20 using namespace llvm::ELF;
22 using namespace lld::elf;
25 class AMDGPU final : public TargetInfo {
28 uint32_t calcEFlags() const override;
29 void relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const override;
30 RelExpr getRelExpr(RelType Type, const Symbol &S,
31 const uint8_t *Loc) const override;
36 RelativeRel = R_AMDGPU_RELATIVE64;
37 GotRel = R_AMDGPU_ABS64;
41 static uint32_t getEFlags(InputFile *File) {
42 return cast<ObjFile<ELF64LE>>(File)->getObj().getHeader()->e_flags;
45 uint32_t AMDGPU::calcEFlags() const {
46 assert(!ObjectFiles.empty());
47 uint32_t Ret = getEFlags(ObjectFiles[0]);
49 // Verify that all input files have the same e_flags.
50 for (InputFile *F : makeArrayRef(ObjectFiles).slice(1)) {
51 if (Ret == getEFlags(F))
53 error("incompatible e_flags: " + toString(F));
59 void AMDGPU::relocateOne(uint8_t *Loc, RelType Type, uint64_t Val) const {
62 case R_AMDGPU_GOTPCREL:
63 case R_AMDGPU_GOTPCREL32_LO:
65 case R_AMDGPU_REL32_LO:
72 case R_AMDGPU_GOTPCREL32_HI:
73 case R_AMDGPU_REL32_HI:
74 write32le(Loc, Val >> 32);
77 error(getErrorLocation(Loc) + "unrecognized reloc " + Twine(Type));
81 RelExpr AMDGPU::getRelExpr(RelType Type, const Symbol &S,
82 const uint8_t *Loc) const {
88 case R_AMDGPU_REL32_LO:
89 case R_AMDGPU_REL32_HI:
92 case R_AMDGPU_GOTPCREL:
93 case R_AMDGPU_GOTPCREL32_LO:
94 case R_AMDGPU_GOTPCREL32_HI:
101 TargetInfo *elf::getAMDGPUTargetInfo() {
102 static AMDGPU Target;