| //===-- MCELFObjectTargetWriter.cpp - ELF Target Writer Subclass ----------===// |
| // |
| // The LLVM Compiler Infrastructure |
| // |
| // This file is distributed under the University of Illinois Open Source |
| // License. See LICENSE.TXT for details. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| #include "llvm/ADT/STLExtras.h" |
| #include "llvm/MC/MCELFObjectWriter.h" |
| #include "llvm/MC/MCExpr.h" |
| #include "llvm/MC/MCValue.h" |
| |
| using namespace llvm; |
| |
| MCELFObjectTargetWriter::MCELFObjectTargetWriter(bool Is64Bit_, |
| uint8_t OSABI_, |
| uint16_t EMachine_, |
| bool HasRelocationAddend_, |
| bool IsN64_) |
| : OSABI(OSABI_), EMachine(EMachine_), |
| HasRelocationAddend(HasRelocationAddend_), Is64Bit(Is64Bit_), |
| IsN64(IsN64_){ |
| } |
| |
| bool MCELFObjectTargetWriter::needsRelocateWithSymbol(const MCSymbol &Sym, |
| unsigned Type) const { |
| return false; |
| } |
| |
| // ELF doesn't require relocations to be in any order. We sort by the Offset, |
| // just to match gnu as for easier comparison. The use type is an arbitrary way |
| // of making the sort deterministic. |
| static int cmpRel(const ELFRelocationEntry *AP, const ELFRelocationEntry *BP) { |
| const ELFRelocationEntry &A = *AP; |
| const ELFRelocationEntry &B = *BP; |
| if (A.Offset != B.Offset) |
| return B.Offset - A.Offset; |
| if (B.Type != A.Type) |
| return A.Type - B.Type; |
| //llvm_unreachable("ELFRelocs might be unstable!"); |
| return 0; |
| } |
| |
| |
| void |
| MCELFObjectTargetWriter::sortRelocs(const MCAssembler &Asm, |
| std::vector<ELFRelocationEntry> &Relocs) { |
| array_pod_sort(Relocs.begin(), Relocs.end(), cmpRel); |
| } |