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 "InstPrinter/MipsInstPrinter.h"
15 #include "MipsTargetStreamer.h"
16 #include "MipsMCTargetDesc.h"
17 #include "llvm/MC/MCELF.h"
18 #include "llvm/MC/MCSymbol.h"
19 #include "llvm/MC/MCSubtargetInfo.h"
20 #include "llvm/Support/CommandLine.h"
21 #include "llvm/Support/ELF.h"
22 #include "llvm/Support/ErrorHandling.h"
23 #include "llvm/Support/FormattedStream.h"
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::emitDirectiveSetMicroMips() {
37 OS << "\t.set\tmicromips\n";
40 void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
41 OS << "\t.set\tnomicromips\n";
44 void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
45 OS << "\t.set\tmips16\n";
48 void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
49 OS << "\t.set\tnomips16\n";
52 void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
53 OS << "\t.set\treorder\n";
56 void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
57 OS << "\t.set\tnoreorder\n";
60 void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
61 OS << "\t.set\tmacro\n";
64 void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
65 OS << "\t.set\tnomacro\n";
68 void MipsTargetAsmStreamer::emitDirectiveSetAt() {
72 void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
73 OS << "\t.set\tnoat\n";
76 void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
77 OS << "\t.end\t" << Name << '\n';
80 void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
81 OS << "\t.ent\t" << Symbol.getName() << '\n';
84 void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
85 void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
86 OS << "\t.option\tpic0\n";
89 void MipsTargetAsmStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
92 << StringRef(MipsInstPrinter::getRegisterName(StackReg)).lower() << ","
94 << StringRef(MipsInstPrinter::getRegisterName(ReturnReg)).lower() << '\n';
97 // Print a 32 bit hex number with all numbers.
98 static void printHex32(unsigned Value, raw_ostream &OS) {
100 for (int i = 7; i >= 0; i--)
101 OS.write_hex((Value & (0xF << (i*4))) >> (i*4));
104 void MipsTargetAsmStreamer::emitMask(unsigned CPUBitmask,
105 int CPUTopSavedRegOff) {
107 printHex32(CPUBitmask, OS);
108 OS << ',' << CPUTopSavedRegOff << '\n';
111 void MipsTargetAsmStreamer::emitFMask(unsigned FPUBitmask,
112 int FPUTopSavedRegOff) {
114 printHex32(FPUBitmask, OS);
115 OS << "," << FPUTopSavedRegOff << '\n';
118 // This part is for ELF object output.
119 MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
120 const MCSubtargetInfo &STI)
121 : MipsTargetStreamer(S), MicroMipsEnabled(false) {
122 MCAssembler &MCA = getStreamer().getAssembler();
123 uint64_t Features = STI.getFeatureBits();
124 Triple T(STI.getTargetTriple());
126 // Update e_header flags
130 if (Features & Mips::FeatureMips64r2)
131 EFlags |= ELF::EF_MIPS_ARCH_64R2;
132 else if (Features & Mips::FeatureMips64)
133 EFlags |= ELF::EF_MIPS_ARCH_64;
134 else if (Features & Mips::FeatureMips32r2)
135 EFlags |= ELF::EF_MIPS_ARCH_32R2;
136 else if (Features & Mips::FeatureMips32)
137 EFlags |= ELF::EF_MIPS_ARCH_32;
139 if (T.isArch64Bit()) {
140 EFlags |= ELF::EF_MIPS_ABI2;
142 if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
143 EFlags |= ELF::EF_MIPS_32BITMODE;
146 EFlags |= ELF::EF_MIPS_ABI_O32;
149 MCA.setELFHeaderEFlags(EFlags);
152 void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
153 if (!isMicroMipsEnabled())
155 MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
156 uint8_t Type = MCELF::GetType(Data);
157 if (Type != ELF::STT_FUNC)
160 // The "other" values are stored in the last 6 bits of the second byte
161 // The traditional defines for STO values assume the full byte and thus
162 // the shift to pack it.
163 MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
166 MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
167 return static_cast<MCELFStreamer &>(Streamer);
170 void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
171 MicroMipsEnabled = true;
173 MCAssembler &MCA = getStreamer().getAssembler();
174 unsigned Flags = MCA.getELFHeaderEFlags();
175 Flags |= ELF::EF_MIPS_MICROMIPS;
176 MCA.setELFHeaderEFlags(Flags);
179 void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
180 MicroMipsEnabled = false;
183 void MipsTargetELFStreamer::emitDirectiveSetMips16() {
184 MCAssembler &MCA = getStreamer().getAssembler();
185 unsigned Flags = MCA.getELFHeaderEFlags();
186 Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
187 MCA.setELFHeaderEFlags(Flags);
190 void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
194 void MipsTargetELFStreamer::emitDirectiveSetReorder() {
198 void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
199 MCAssembler &MCA = getStreamer().getAssembler();
200 unsigned Flags = MCA.getELFHeaderEFlags();
201 Flags |= ELF::EF_MIPS_NOREORDER;
202 MCA.setELFHeaderEFlags(Flags);
205 void MipsTargetELFStreamer::emitDirectiveSetMacro() {
209 void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
213 void MipsTargetELFStreamer::emitDirectiveSetAt() {
217 void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
221 void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
225 void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
229 void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
230 MCAssembler &MCA = getStreamer().getAssembler();
231 unsigned Flags = MCA.getELFHeaderEFlags();
232 Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
233 MCA.setELFHeaderEFlags(Flags);
235 void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
236 MCAssembler &MCA = getStreamer().getAssembler();
237 unsigned Flags = MCA.getELFHeaderEFlags();
238 Flags &= ~ELF::EF_MIPS_PIC;
239 MCA.setELFHeaderEFlags(Flags);
242 void MipsTargetELFStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
243 unsigned ReturnReg) {
247 void MipsTargetELFStreamer::emitMask(unsigned CPUBitmask,
248 int CPUTopSavedRegOff) {
252 void MipsTargetELFStreamer::emitFMask(unsigned FPUBitmask,
253 int FPUTopSavedRegOff) {