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 "MipsMCTargetDesc.h"
16 #include "llvm/MC/MCELF.h"
17 #include "llvm/MC/MCSymbol.h"
18 #include "llvm/MC/MCSubtargetInfo.h"
19 #include "llvm/Support/CommandLine.h"
20 #include "llvm/Support/ELF.h"
21 #include "llvm/Support/ErrorHandling.h"
22 #include "llvm/Support/FormattedStream.h"
26 // Pin vtable to this file.
27 void MipsTargetStreamer::anchor() {}
29 MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
31 MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
32 formatted_raw_ostream &OS)
33 : MipsTargetStreamer(S), OS(OS) {}
35 void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
36 OS << "\t.set\tmicromips\n";
39 void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
40 OS << "\t.set\tnomicromips\n";
43 void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
44 OS << "\t.set\tmips16\n";
47 void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
48 OS << "\t.set\tnomips16\n";
51 void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
52 OS << "\t.set\treorder\n";
55 void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
56 OS << "\t.set\tnoreorder\n";
59 void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
60 OS << "\t.set\tmacro\n";
63 void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
64 OS << "\t.set\tnomacro\n";
67 void MipsTargetAsmStreamer::emitDirectiveSetAt() {
71 void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
72 OS << "\t.set\tnoat\n";
75 void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
76 OS << "\t.end\t" << Name << '\n';
79 void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
80 OS << "\t.ent\t" << Symbol.getName() << '\n';
83 void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
84 void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
85 OS << "\t.option\tpic0\n";
88 // This part is for ELF object output.
89 MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
90 const MCSubtargetInfo &STI)
91 : MipsTargetStreamer(S), MicroMipsEnabled(false) {
92 MCAssembler &MCA = getStreamer().getAssembler();
93 uint64_t Features = STI.getFeatureBits();
94 Triple T(STI.getTargetTriple());
96 // Update e_header flags
100 if (Features & Mips::FeatureMips64r2)
101 EFlags |= ELF::EF_MIPS_ARCH_64R2;
102 else if (Features & Mips::FeatureMips64)
103 EFlags |= ELF::EF_MIPS_ARCH_64;
104 else if (Features & Mips::FeatureMips32r2)
105 EFlags |= ELF::EF_MIPS_ARCH_32R2;
106 else if (Features & Mips::FeatureMips32)
107 EFlags |= ELF::EF_MIPS_ARCH_32;
109 if (T.isArch64Bit()) {
110 EFlags |= ELF::EF_MIPS_ABI2;
112 if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
113 EFlags |= ELF::EF_MIPS_32BITMODE;
116 EFlags |= ELF::EF_MIPS_ABI_O32;
119 MCA.setELFHeaderEFlags(EFlags);
122 void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
123 if (!isMicroMipsEnabled())
125 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
126 uint8_t Type = MCELF::GetType(Data);
127 if (Type != ELF::STT_FUNC)
130 // The "other" values are stored in the last 6 bits of the second byte
131 // The traditional defines for STO values assume the full byte and thus
132 // the shift to pack it.
133 MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
136 MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
137 return static_cast<MCELFStreamer &>(Streamer);
140 void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
141 MicroMipsEnabled = true;
143 MCAssembler &MCA = getStreamer().getAssembler();
144 unsigned Flags = MCA.getELFHeaderEFlags();
145 Flags |= ELF::EF_MIPS_MICROMIPS;
146 MCA.setELFHeaderEFlags(Flags);
149 void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
150 MicroMipsEnabled = false;
153 void MipsTargetELFStreamer::emitDirectiveSetMips16() {
154 MCAssembler &MCA = getStreamer().getAssembler();
155 unsigned Flags = MCA.getELFHeaderEFlags();
156 Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
157 MCA.setELFHeaderEFlags(Flags);
160 void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
164 void MipsTargetELFStreamer::emitDirectiveSetReorder() {
168 void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
169 MCAssembler &MCA = getStreamer().getAssembler();
170 unsigned Flags = MCA.getELFHeaderEFlags();
171 Flags |= ELF::EF_MIPS_NOREORDER;
172 MCA.setELFHeaderEFlags(Flags);
175 void MipsTargetELFStreamer::emitDirectiveSetMacro() {
179 void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
183 void MipsTargetELFStreamer::emitDirectiveSetAt() {
187 void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
191 void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
195 void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
199 void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
200 MCAssembler &MCA = getStreamer().getAssembler();
201 unsigned Flags = MCA.getELFHeaderEFlags();
202 Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
203 MCA.setELFHeaderEFlags(Flags);
205 void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
206 MCAssembler &MCA = getStreamer().getAssembler();
207 unsigned Flags = MCA.getELFHeaderEFlags();
208 Flags &= ~ELF::EF_MIPS_PIC;
209 MCA.setELFHeaderEFlags(Flags);