X-Git-Url: http://plrg.eecs.uci.edu/git/?a=blobdiff_plain;f=lib%2FTarget%2FMips%2FMCTargetDesc%2FMipsTargetStreamer.cpp;h=053e13e5565f18cb9252b3b192705e9725627df5;hb=58f58c97f0a4bbadb81a198c340f5264344d41e1;hp=04692a53c9eb71f14ba8caace96377264f3148b4;hpb=e40e68add7f17f6ad5cd5e85ea44b149f6935147;p=oota-llvm.git

diff --git a/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp b/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
index 04692a53c9e..053e13e5565 100644
--- a/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
+++ b/lib/Target/Mips/MCTargetDesc/MipsTargetStreamer.cpp
@@ -11,35 +11,394 @@
 //
 //===----------------------------------------------------------------------===//
 
+#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"
 
 using namespace llvm;
 
-// pin vtable to this file
+// Pin vtable to this file.
 void MipsTargetStreamer::anchor() {}
 
-void MipsTargetAsmStreamer::emitMipsHackELFFlags(unsigned Flags) { return; }
-void MipsTargetAsmStreamer::emitSymSTO(MCSymbol *Sym, unsigned Val) { return; }
+MipsTargetStreamer::MipsTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
 
-MCELFStreamer &MipsTargetELFStreamer::getStreamer() {
-  return static_cast<MCELFStreamer &>(*Streamer);
+MipsTargetAsmStreamer::MipsTargetAsmStreamer(MCStreamer &S,
+                                             formatted_raw_ostream &OS)
+    : MipsTargetStreamer(S), OS(OS) {}
+
+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::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";
+}
+
+void MipsTargetAsmStreamer::emitDirectiveOptionPic2() {
+  OS << "\t.option\tpic2\n";
+}
+
+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 MipsTargetELFStreamer::emitMipsHackELFFlags(unsigned Flags) {
+void MipsTargetAsmStreamer::emitDirectiveSetMips32R2() {
+  OS << "\t.set\tmips32r2\n";
+}
+
+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::emitSymSTO(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 | 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.
 }