MipsTargetStreamer.cpp revision 4c1625b3cb23745dba38e205b20e7b63954d8067 
1//===-- MipsTargetStreamer.cpp - Mips Target Streamer Methods -------------===//
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// This file provides Mips specific target streamer methods.
11//
12//===----------------------------------------------------------------------===//
13
14#include "MipsTargetStreamer.h"
15#include "llvm/MC/MCELF.h"
16#include "llvm/MC/MCSymbol.h"
17#include "llvm/Support/CommandLine.h"
18#include "llvm/Support/ErrorHandling.h"
19#include "llvm/Support/FormattedStream.h"
20
21using namespace llvm;
22
23static cl::opt<bool> PrintHackDirectives("print-hack-directives",
24                                         cl::init(false), cl::Hidden);
25
26// pin vtable to this file
27void MipsTargetStreamer::anchor() {}
28
29MipsTargetAsmStreamer::MipsTargetAsmStreamer(formatted_raw_ostream &OS)
30    : OS(OS) {}
31
32void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) {
33  if (!PrintHackDirectives)
34    return;
35
36  OS << "\t.mips_hack_elf_flags 0x";
37  OS.write_hex(Flags);
38  OS << '\n';
39}
40void MipsTargetAsmStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
41  if (!PrintHackDirectives)
42    return;
43
44  OS << "\t.mips_hack_stocg ";
45  OS << Sym->getName();
46  OS << ", ";
47  OS << Val;
48  OS << '\n';
49}
50
51MipsTargetELFStreamer::MipsTargetELFStreamer() {}
52
53MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
54  return static_cast<MCELFStreamer &>(*Streamer);
55}
56
57void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
58  MCAssembler &MCA = getStreamer().getAssembler();
59  MCA.setELFHeaderEFlags(Flags);
60}
61
62// Set a symbol's STO flags
63void MipsTargetELFStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
64  MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Sym);
65  // The "other" values are stored in the last 6 bits of the second byte
66  // The traditional defines for STO values assume the full byte and thus
67  // the shift to pack it.
68  MCELF::setOther(Data, Val >> 2);
69}
70