MipsELFStreamer.cpp revision 5e195a4c8d8cd4498ab7e0aa16a3b6f273daf457 
1//===-- MipsELFStreamer.cpp - MipsELFStreamer ---------------------------===//
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#include "MipsSubtarget.h"
10#include "llvm/MC/MCAssembler.h"
11#include "llvm/MC/MCELF.h"
12#include "llvm/MC/MCELFStreamer.h"
13#include "llvm/MC/MCELFSymbolFlags.h"
14#include "llvm/MC/MCSymbol.h"
15#include "llvm/Support/ELF.h"
16#include "llvm/Support/ErrorHandling.h"
17using namespace llvm;
18
19namespace {
20class MipsELFStreamer : public MCELFStreamer {
21public:
22  MipsELFStreamer(MCContext &Context, MCAsmBackend &TAB, raw_ostream &OS,
23                  MCCodeEmitter *Emitter, bool RelaxAll, bool NoExecStack)
24      : MCELFStreamer(Context, TAB, OS, Emitter) {}
25
26  ~MipsELFStreamer() {}
27  void emitMipsHackELFFlags(unsigned Flags);
28  void emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val);
29};
30}
31
32namespace llvm {
33MCELFStreamer *createMipsELFStreamer(MCContext &Context, MCAsmBackend &TAB,
34                                     raw_ostream &OS, MCCodeEmitter *Emitter,
35                                     bool RelaxAll, bool NoExecStack) {
36  MipsELFStreamer *S =
37      new MipsELFStreamer(Context, TAB, OS, Emitter, RelaxAll, NoExecStack);
38  return S;
39}
40} // namespace llvm
41
42void MipsELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
43  MCAssembler &MCA = getAssembler();
44
45  MCA.setELFHeaderEFlags(Flags);
46}
47
48// Set a symbol's STO flags
49void MipsELFStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
50  MCSymbolData &Data = getOrCreateSymbolData(Sym);
51  // The "other" values are stored in the last 6 bits of the second byte
52  // The traditional defines for STO values assume the full byte and thus
53  // the shift to pack it.
54  MCELF::setOther(Data, Val >> 2);
55}
56