1 //===-- MipsTargetStreamer.cpp - Mips Target Streamer Methods -------------===//
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 // This file provides Mips specific target streamer methods.
12 //===----------------------------------------------------------------------===//
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/ELF.h"
19 #include "llvm/Support/ErrorHandling.h"
20 #include "llvm/Support/FormattedStream.h"
24 static cl::opt<bool> PrintHackDirectives("print-hack-directives",
25 cl::init(false), cl::Hidden);
27 // Pin vtable to this file.
28 void MipsTargetStreamer::anchor() {}
30 MipsTargetAsmStreamer::MipsTargetAsmStreamer(formatted_raw_ostream &OS)
33 void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) {
34 if (!PrintHackDirectives)
37 OS << "\t.mips_hack_elf_flags 0x";
42 void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
43 OS << "\t.set\tmicromips\n";
46 void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
47 OS << "\t.set\tnomicromips\n";
50 void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
51 OS << "\t.set\tmips16\n";
54 void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
55 OS << "\t.set\tnomips16\n";
58 void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
59 OS << "\t.ent\t" << Symbol.getName() << '\n';
62 void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
63 void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
64 OS << "\t.option\tpic0\n";
66 void MipsTargetAsmStreamer::emitDirectiveSetMips16(bool IsMips16) {
68 OS << "\t.set\tmips16\n";
70 OS << "\t.set\tnomips16\n";
73 // This part is for ELF object output.
74 MipsTargetELFStreamer::MipsTargetELFStreamer() : MicroMipsEnabled(false) {}
76 void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
77 if (!isMicroMipsEnabled())
79 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
80 uint8_t Type = MCELF::GetType(Data);
81 if (Type != ELF::STT_FUNC)
84 // The "other" values are stored in the last 6 bits of the second byte
85 // The traditional defines for STO values assume the full byte and thus
86 // the shift to pack it.
87 MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
90 MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
91 return static_cast<MCELFStreamer &>(*Streamer);
94 void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
95 MCAssembler &MCA = getStreamer().getAssembler();
96 MCA.setELFHeaderEFlags(Flags);
99 void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
100 MicroMipsEnabled = true;
103 void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
104 MicroMipsEnabled = false;
107 void MipsTargetELFStreamer::emitDirectiveSetMips16() {
111 void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
115 void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
119 void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
120 MCAssembler &MCA = getStreamer().getAssembler();
121 unsigned Flags = MCA.getELFHeaderEFlags();
122 Flags |= ELF::EF_MIPS_CPIC;
123 MCA.setELFHeaderEFlags(Flags);
125 void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
126 MCAssembler &MCA = getStreamer().getAssembler();
127 unsigned Flags = MCA.getELFHeaderEFlags();
128 Flags &= ~ELF::EF_MIPS_PIC;
129 MCA.setELFHeaderEFlags(Flags);
131 void MipsTargetELFStreamer::emitDirectiveSetMips16(bool IsMips16) {
132 // Don't do anything for .set nomips16
136 MCAssembler &MCA = getStreamer().getAssembler();
137 unsigned Flags = MCA.getELFHeaderEFlags();
138 Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
139 MCA.setELFHeaderEFlags(Flags);