1 //===-- MCELFObjectTargetWriter.cpp - ELF Target Writer Subclass ----------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "llvm/ADT/STLExtras.h"
11 #include "llvm/MC/MCELFObjectWriter.h"
12 #include "llvm/MC/MCExpr.h"
13 #include "llvm/MC/MCValue.h"
17 MCELFObjectTargetWriter::MCELFObjectTargetWriter(bool Is64Bit_,
20 bool HasRelocationAddend_,
22 : OSABI(OSABI_), EMachine(EMachine_),
23 HasRelocationAddend(HasRelocationAddend_), Is64Bit(Is64Bit_),
27 bool MCELFObjectTargetWriter::needsRelocateWithSymbol(const MCSymbol &Sym,
28 unsigned Type) const {
32 // ELF doesn't require relocations to be in any order. We sort by the Offset,
33 // just to match gnu as for easier comparison. The use type is an arbitrary way
34 // of making the sort deterministic.
35 static int cmpRel(const ELFRelocationEntry *AP, const ELFRelocationEntry *BP) {
36 const ELFRelocationEntry &A = *AP;
37 const ELFRelocationEntry &B = *BP;
38 if (A.Offset != B.Offset)
39 return B.Offset - A.Offset;
41 return A.Type - B.Type;
42 //llvm_unreachable("ELFRelocs might be unstable!");
48 MCELFObjectTargetWriter::sortRelocs(const MCAssembler &Asm,
49 std::vector<ELFRelocationEntry> &Relocs) {
50 array_pod_sort(Relocs.begin(), Relocs.end(), cmpRel);