1 //===-- MCELFObjectTargetWriter.cpp - ELF Target Writer Subclass ----------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 #include "llvm/ADT/STLExtras.h"
11 #include "llvm/MC/MCELFObjectWriter.h"
12 #include "llvm/MC/MCExpr.h"
13 #include "llvm/MC/MCValue.h"
14 
15 using namespace llvm;
16 
17 MCELFObjectTargetWriter::MCELFObjectTargetWriter(bool Is64Bit_,
18                                                  uint8_t OSABI_,
19                                                  uint16_t EMachine_,
20                                                  bool HasRelocationAddend_,
21                                                  bool IsN64_)
22   : OSABI(OSABI_), EMachine(EMachine_),
23     HasRelocationAddend(HasRelocationAddend_), Is64Bit(Is64Bit_),
24     IsN64(IsN64_){
25 }
26 
27 /// Default e_flags = 0
28 unsigned MCELFObjectTargetWriter::getEFlags() const {
29   return 0;
30 }
31 
32 const MCSymbol *MCELFObjectTargetWriter::ExplicitRelSym(const MCAssembler &Asm,
33                                                         const MCValue &Target,
34                                                         const MCFragment &F,
35                                                         const MCFixup &Fixup,
36                                                         bool IsPCRel) const {
37   return NULL;
38 }
39 
40 const MCSymbol *MCELFObjectTargetWriter::undefinedExplicitRelSym(const MCValue &Target,
41                                                                  const MCFixup &Fixup,
42                                                                  bool IsPCRel) const {
43   const MCSymbol &Symbol = Target.getSymA()->getSymbol();
44   return &Symbol.AliasedSymbol();
45 }
46 
47 void MCELFObjectTargetWriter::adjustFixupOffset(const MCFixup &Fixup,
48                                                 uint64_t &RelocOffset) {
49 }
50 
51 void
52 MCELFObjectTargetWriter::sortRelocs(const MCAssembler &Asm,
53                                     std::vector<ELFRelocationEntry> &Relocs) {
54   // Sort by the r_offset, just like gnu as does.
55   array_pod_sort(Relocs.begin(), Relocs.end());
56 }
57