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 MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
32 MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
33 formatted_raw_ostream &OS)
34 : MipsTargetStreamer(S), OS(OS) {}
36 void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) {
37 if (!PrintHackDirectives)
40 OS << "\t.mips_hack_elf_flags 0x";
45 void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
46 OS << "\t.set\tmicromips\n";
49 void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
50 OS << "\t.set\tnomicromips\n";
53 void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
54 OS << "\t.set\tmips16\n";
57 void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
58 OS << "\t.set\tnomips16\n";
61 void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
62 OS << "\t.set\treorder\n";
65 void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
66 OS << "\t.set\tnoreorder\n";
69 void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
70 OS << "\t.set\tmacro\n";
73 void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
74 OS << "\t.set\tnomacro\n";
77 void MipsTargetAsmStreamer::emitDirectiveSetAt() {
81 void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
82 OS << "\t.set\tnoat\n";
85 void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
86 OS << "\t.end\t" << Name << '\n';
89 void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
90 OS << "\t.ent\t" << Symbol.getName() << '\n';
93 void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
94 void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
95 OS << "\t.option\tpic0\n";
98 // This part is for ELF object output.
99 MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S)
100 : MipsTargetStreamer(S), MicroMipsEnabled(false) {}
102 void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
103 if (!isMicroMipsEnabled())
105 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
106 uint8_t Type = MCELF::GetType(Data);
107 if (Type != ELF::STT_FUNC)
110 // The "other" values are stored in the last 6 bits of the second byte
111 // The traditional defines for STO values assume the full byte and thus
112 // the shift to pack it.
113 MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
116 MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
117 return static_cast<MCELFStreamer &>(Streamer);
120 void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
121 MCAssembler &MCA = getStreamer().getAssembler();
122 MCA.setELFHeaderEFlags(Flags);
125 void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
126 MicroMipsEnabled = true;
129 void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
130 MicroMipsEnabled = false;
133 void MipsTargetELFStreamer::emitDirectiveSetMips16() {
134 MCAssembler &MCA = getStreamer().getAssembler();
135 unsigned Flags = MCA.getELFHeaderEFlags();
136 Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
137 MCA.setELFHeaderEFlags(Flags);
140 void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
144 void MipsTargetELFStreamer::emitDirectiveSetReorder() {
148 void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
152 void MipsTargetELFStreamer::emitDirectiveSetMacro() {
156 void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
160 void MipsTargetELFStreamer::emitDirectiveSetAt() {
164 void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
168 void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
172 void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
176 void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
177 MCAssembler &MCA = getStreamer().getAssembler();
178 unsigned Flags = MCA.getELFHeaderEFlags();
179 Flags |= ELF::EF_MIPS_CPIC;
180 MCA.setELFHeaderEFlags(Flags);
182 void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
183 MCAssembler &MCA = getStreamer().getAssembler();
184 unsigned Flags = MCA.getELFHeaderEFlags();
185 Flags &= ~ELF::EF_MIPS_PIC;
186 MCA.setELFHeaderEFlags(Flags);