//
//===----------------------------------------------------------------------===//
+#include "InstPrinter/MipsInstPrinter.h"
+#include "MipsMCTargetDesc.h"
+#include "MipsTargetObjectFile.h"
#include "MipsTargetStreamer.h"
+#include "llvm/MC/MCContext.h"
#include "llvm/MC/MCELF.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCSubtargetInfo.h"
#include "llvm/MC/MCSymbol.h"
#include "llvm/Support/CommandLine.h"
+#include "llvm/Support/ELF.h"
#include "llvm/Support/ErrorHandling.h"
#include "llvm/Support/FormattedStream.h"
-#include "llvm/Support/ELF.h"
using namespace llvm;
-static cl::opt<bool> PrintHackDirectives("print-hack-directives",
- cl::init(false), cl::Hidden);
-
// Pin vtable to this file.
void MipsTargetStreamer::anchor() {}
-MipsTargetAsmStreamer::MipsTargetAsmStreamer(formatted_raw_ostream &OS)
- : OS(OS) {}
+MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
-void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) {
- if (!PrintHackDirectives)
- return;
+MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
+ formatted_raw_ostream &OS)
+ : MipsTargetStreamer(S), OS(OS) {}
- OS << "\t.mips_hack_elf_flags 0x";
- OS.write_hex(Flags);
- OS << '\n';
+void MipsTargetAsmStreamer::emitDirectiveSetMicroMips() {
+ OS << "\t.set\tmicromips\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoMicroMips() {
+ OS << "\t.set\tnomicromips\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips16() {
+ OS << "\t.set\tmips16\n";
}
-void MipsTargetAsmStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
- if (!PrintHackDirectives)
- return;
- OS << "\t.mips_hack_stocg ";
- OS << Sym->getName();
- OS << ", ";
- OS << Val;
- OS << '\n';
+void MipsTargetAsmStreamer::emitDirectiveSetNoMips16() {
+ OS << "\t.set\tnomips16\n";
}
+
+void MipsTargetAsmStreamer::emitDirectiveSetReorder() {
+ OS << "\t.set\treorder\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoReorder() {
+ OS << "\t.set\tnoreorder\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMacro() {
+ OS << "\t.set\tmacro\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoMacro() {
+ OS << "\t.set\tnomacro\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetAt() {
+ OS << "\t.set\tat\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetNoAt() {
+ OS << "\t.set\tnoat\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveEnd(StringRef Name) {
+ OS << "\t.end\t" << Name << '\n';
+}
+
+void MipsTargetAsmStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
+ OS << "\t.ent\t" << Symbol.getName() << '\n';
+}
+
void MipsTargetAsmStreamer::emitDirectiveAbiCalls() { OS << "\t.abicalls\n"; }
+
+void MipsTargetAsmStreamer::emitDirectiveNaN2008() { OS << "\t.nan\t2008\n"; }
+
+void MipsTargetAsmStreamer::emitDirectiveNaNLegacy() {
+ OS << "\t.nan\tlegacy\n";
+}
+
void MipsTargetAsmStreamer::emitDirectiveOptionPic0() {
OS << "\t.option\tpic0\n";
}
-// This part is for ELF object output.
-MipsTargetELFStreamer::MipsTargetELFStreamer() {}
+void MipsTargetAsmStreamer::emitDirectiveOptionPic2() {
+ OS << "\t.option\tpic2\n";
+}
-MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
- return static_cast<MCELFStreamer &>(*Streamer);
+void MipsTargetAsmStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
+ unsigned ReturnReg) {
+ OS << "\t.frame\t$"
+ << StringRef(MipsInstPrinter::getRegisterName(StackReg)).lower() << ","
+ << StackSize << ",$"
+ << StringRef(MipsInstPrinter::getRegisterName(ReturnReg)).lower() << '\n';
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips32R2() {
+ OS << "\t.set\tmips32r2\n";
}
-void MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
+void MipsTargetAsmStreamer::emitDirectiveSetMips64() {
+ OS << "\t.set\tmips64\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetMips64R2() {
+ OS << "\t.set\tmips64r2\n";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveSetDsp() {
+ OS << "\t.set\tdsp\n";
+}
+// Print a 32 bit hex number with all numbers.
+static void printHex32(unsigned Value, raw_ostream &OS) {
+ OS << "0x";
+ for (int i = 7; i >= 0; i--)
+ OS.write_hex((Value & (0xF << (i*4))) >> (i*4));
+}
+
+void MipsTargetAsmStreamer::emitMask(unsigned CPUBitmask,
+ int CPUTopSavedRegOff) {
+ OS << "\t.mask \t";
+ printHex32(CPUBitmask, OS);
+ OS << ',' << CPUTopSavedRegOff << '\n';
+}
+
+void MipsTargetAsmStreamer::emitFMask(unsigned FPUBitmask,
+ int FPUTopSavedRegOff) {
+ OS << "\t.fmask\t";
+ printHex32(FPUBitmask, OS);
+ OS << "," << FPUTopSavedRegOff << '\n';
+}
+
+// This part is for ELF object output.
+MipsTargetELFStreamer::MipsTargetELFStreamer(MCStreamer &S,
+ const MCSubtargetInfo &STI)
+ : MipsTargetStreamer(S), MicroMipsEnabled(false), STI(STI) {
MCAssembler &MCA = getStreamer().getAssembler();
- MCA.setELFHeaderEFlags(Flags);
+ uint64_t Features = STI.getFeatureBits();
+ Triple T(STI.getTargetTriple());
+ Pic = (MCA.getContext().getObjectFileInfo()->getRelocM() == Reloc::PIC_)
+ ? true
+ : false;
+
+ // Update e_header flags
+ unsigned EFlags = 0;
+
+ // Architecture
+ if (Features & Mips::FeatureMips64r2)
+ EFlags |= ELF::EF_MIPS_ARCH_64R2;
+ else if (Features & Mips::FeatureMips64)
+ EFlags |= ELF::EF_MIPS_ARCH_64;
+ else if (Features & Mips::FeatureMips4)
+ EFlags |= ELF::EF_MIPS_ARCH_4;
+ else if (Features & Mips::FeatureMips32r2)
+ EFlags |= ELF::EF_MIPS_ARCH_32R2;
+ else if (Features & Mips::FeatureMips32)
+ EFlags |= ELF::EF_MIPS_ARCH_32;
+
+ if (T.isArch64Bit()) {
+ if (Features & Mips::FeatureN32)
+ EFlags |= ELF::EF_MIPS_ABI2;
+ else if (Features & Mips::FeatureO32) {
+ EFlags |= ELF::EF_MIPS_ABI_O32;
+ EFlags |= ELF::EF_MIPS_32BITMODE; /* Compatibility Mode */
+ }
+ // No need to set any bit for N64 which is the default ABI at the moment
+ // for 64-bit Mips architectures.
+ } else {
+ if (Features & Mips::FeatureMips64r2 || Features & Mips::FeatureMips64)
+ EFlags |= ELF::EF_MIPS_32BITMODE;
+
+ // ABI
+ EFlags |= ELF::EF_MIPS_ABI_O32;
+ }
+
+ // Other options.
+ if (Features & Mips::FeatureNaN2008)
+ EFlags |= ELF::EF_MIPS_NAN2008;
+
+ MCA.setELFHeaderEFlags(EFlags);
}
-// Set a symbol's STO flags.
-void MipsTargetELFStreamer::emitMipsHackSTOCG(MCSymbol *Sym, unsigned Val) {
- MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Sym);
+void MipsTargetELFStreamer::emitLabel(MCSymbol *Symbol) {
+ if (!isMicroMipsEnabled())
+ return;
+ MCSymbolData &Data = getStreamer().getOrCreateSymbolData(Symbol);
+ uint8_t Type = MCELF::GetType(Data);
+ if (Type != ELF::STT_FUNC)
+ return;
+
// The "other" values are stored in the last 6 bits of the second byte
// The traditional defines for STO values assume the full byte and thus
// the shift to pack it.
- MCELF::setOther(Data, Val >> 2);
+ MCELF::setOther(Data, ELF::STO_MIPS_MICROMIPS >> 2);
+}
+
+void MipsTargetELFStreamer::finish() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ MCContext &Context = MCA.getContext();
+ MCStreamer &OS = getStreamer();
+ Triple T(STI.getTargetTriple());
+ uint64_t Features = STI.getFeatureBits();
+
+ if (T.isArch64Bit() && (Features & Mips::FeatureN64)) {
+ const MCSectionELF *Sec = Context.getELFSection(
+ ".MIPS.options", ELF::SHT_MIPS_OPTIONS,
+ ELF::SHF_ALLOC | ELF::SHF_MIPS_NOSTRIP, SectionKind::getMetadata());
+ OS.SwitchSection(Sec);
+
+ OS.EmitIntValue(1, 1); // kind
+ OS.EmitIntValue(40, 1); // size
+ OS.EmitIntValue(0, 2); // section
+ OS.EmitIntValue(0, 4); // info
+ OS.EmitIntValue(0, 4); // ri_gprmask
+ OS.EmitIntValue(0, 4); // pad
+ OS.EmitIntValue(0, 4); // ri_cpr[0]mask
+ OS.EmitIntValue(0, 4); // ri_cpr[1]mask
+ OS.EmitIntValue(0, 4); // ri_cpr[2]mask
+ OS.EmitIntValue(0, 4); // ri_cpr[3]mask
+ OS.EmitIntValue(0, 8); // ri_gp_value
+ } else {
+ const MCSectionELF *Sec =
+ Context.getELFSection(".reginfo", ELF::SHT_MIPS_REGINFO, ELF::SHF_ALLOC,
+ SectionKind::getMetadata());
+ OS.SwitchSection(Sec);
+
+ OS.EmitIntValue(0, 4); // ri_gprmask
+ OS.EmitIntValue(0, 4); // ri_cpr[0]mask
+ OS.EmitIntValue(0, 4); // ri_cpr[1]mask
+ OS.EmitIntValue(0, 4); // ri_cpr[2]mask
+ OS.EmitIntValue(0, 4); // ri_cpr[3]mask
+ OS.EmitIntValue(0, 4); // ri_gp_value
+ }
+}
+
+void MipsTargetELFStreamer::emitAssignment(MCSymbol *Symbol,
+ const MCExpr *Value) {
+ // If on rhs is micromips symbol then mark Symbol as microMips.
+ if (Value->getKind() != MCExpr::SymbolRef)
+ return;
+ const MCSymbol &RhsSym =
+ static_cast<const MCSymbolRefExpr *>(Value)->getSymbol();
+ MCSymbolData &Data = getStreamer().getOrCreateSymbolData(&RhsSym);
+ uint8_t Type = MCELF::GetType(Data);
+ if ((Type != ELF::STT_FUNC)
+ || !(MCELF::getOther(Data) & (ELF::STO_MIPS_MICROMIPS >> 2)))
+ return;
+
+ MCSymbolData &SymbolData = getStreamer().getOrCreateSymbolData(Symbol);
+ // The "other" values are stored in the last 6 bits of the second byte.
+ // The traditional defines for STO values assume the full byte and thus
+ // the shift to pack it.
+ MCELF::setOther(SymbolData, ELF::STO_MIPS_MICROMIPS >> 2);
+}
+
+MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
+ return static_cast<MCELFStreamer &>(Streamer);
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetMicroMips() {
+ MicroMipsEnabled = true;
+
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Flags |= ELF::EF_MIPS_MICROMIPS;
+ MCA.setELFHeaderEFlags(Flags);
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetNoMicroMips() {
+ MicroMipsEnabled = false;
}
+
+void MipsTargetELFStreamer::emitDirectiveSetMips16() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Flags |= ELF::EF_MIPS_ARCH_ASE_M16;
+ MCA.setELFHeaderEFlags(Flags);
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetNoMips16() {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetReorder() {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetNoReorder() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Flags |= ELF::EF_MIPS_NOREORDER;
+ MCA.setELFHeaderEFlags(Flags);
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetMacro() {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetNoMacro() {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetAt() {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetNoAt() {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveEnd(StringRef Name) {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveEnt(const MCSymbol &Symbol) {
+ // FIXME: implement.
+}
+
void MipsTargetELFStreamer::emitDirectiveAbiCalls() {
MCAssembler &MCA = getStreamer().getAssembler();
unsigned Flags = MCA.getELFHeaderEFlags();
- Flags |= ELF::EF_MIPS_CPIC;
+ Flags |= ELF::EF_MIPS_CPIC | ELF::EF_MIPS_PIC;
+ MCA.setELFHeaderEFlags(Flags);
+}
+
+void MipsTargetELFStreamer::emitDirectiveNaN2008() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Flags |= ELF::EF_MIPS_NAN2008;
MCA.setELFHeaderEFlags(Flags);
}
+
+void MipsTargetELFStreamer::emitDirectiveNaNLegacy() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Flags &= ~ELF::EF_MIPS_NAN2008;
+ MCA.setELFHeaderEFlags(Flags);
+}
+
void MipsTargetELFStreamer::emitDirectiveOptionPic0() {
MCAssembler &MCA = getStreamer().getAssembler();
unsigned Flags = MCA.getELFHeaderEFlags();
+ // This option overrides other PIC options like -KPIC.
+ Pic = false;
Flags &= ~ELF::EF_MIPS_PIC;
MCA.setELFHeaderEFlags(Flags);
}
+
+void MipsTargetELFStreamer::emitDirectiveOptionPic2() {
+ MCAssembler &MCA = getStreamer().getAssembler();
+ unsigned Flags = MCA.getELFHeaderEFlags();
+ Pic = true;
+ // NOTE: We are following the GAS behaviour here which means the directive
+ // 'pic2' also sets the CPIC bit in the ELF header. This is different from
+ // what is stated in the SYSV ABI which consider the bits EF_MIPS_PIC and
+ // EF_MIPS_CPIC to be mutually exclusive.
+ Flags |= ELF::EF_MIPS_PIC | ELF::EF_MIPS_CPIC;
+ MCA.setELFHeaderEFlags(Flags);
+}
+
+void MipsTargetELFStreamer::emitFrame(unsigned StackReg, unsigned StackSize,
+ unsigned ReturnReg) {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitMask(unsigned CPUBitmask,
+ int CPUTopSavedRegOff) {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitFMask(unsigned FPUBitmask,
+ int FPUTopSavedRegOff) {
+ // FIXME: implement.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetMips32R2() {
+ // No action required for ELF output.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetMips64() {
+ // No action required for ELF output.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetMips64R2() {
+ // No action required for ELF output.
+}
+
+void MipsTargetELFStreamer::emitDirectiveSetDsp() {
+ // No action required for ELF output.
+}
projects / oota-llvm.git / blobdiff