1 files changed, 156 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp b/contrib/llvm/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp
new file mode 100644
index 0000000..6ba258b
--- /dev/null
+++ b/contrib/llvm/lib/Target/Blackfin/AsmPrinter/BlackfinAsmPrinter.cpp
@@ -0,0 +1,156 @@
+//===-- BlackfinAsmPrinter.cpp - Blackfin LLVM assembly writer ------------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file contains a printer that converts from our internal representation
+// of machine-dependent LLVM code to GAS-format BLACKFIN assembly language.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "asm-printer"
+#include "Blackfin.h"
+#include "BlackfinInstrInfo.h"
+#include "llvm/Constants.h"
+#include "llvm/DerivedTypes.h"
+#include "llvm/Module.h"
+#include "llvm/CodeGen/AsmPrinter.h"
+#include "llvm/CodeGen/MachineFunctionPass.h"
+#include "llvm/CodeGen/MachineConstantPool.h"
+#include "llvm/CodeGen/MachineInstr.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCSymbol.h"
+#include "llvm/Target/Mangler.h"
+#include "llvm/Target/TargetData.h"
+#include "llvm/Target/TargetLoweringObjectFile.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/ADT/SmallString.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/raw_ostream.h"
+using namespace llvm;
+
+namespace {
+  class BlackfinAsmPrinter : public AsmPrinter {
+  public:
+    BlackfinAsmPrinter(TargetMachine &TM, MCStreamer &Streamer)
+      : AsmPrinter(TM, Streamer) {}
+
+    virtual const char *getPassName() const {
+      return "Blackfin Assembly Printer";
+    }
+
+    void printOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
+    void printMemoryOperand(const MachineInstr *MI, int opNum, raw_ostream &O);
+    void printInstruction(const MachineInstr *MI, raw_ostream &O);// autogen'd.
+    static const char *getRegisterName(unsigned RegNo);
+
+    void EmitInstruction(const MachineInstr *MI) {
+      SmallString<128> Str;
+      raw_svector_ostream OS(Str);
+      printInstruction(MI, OS);
+      OutStreamer.EmitRawText(OS.str());
+    }
+    bool PrintAsmOperand(const MachineInstr *MI, unsigned OpNo,
+                         unsigned AsmVariant, const char *ExtraCode,
+                         raw_ostream &O);
+    bool PrintAsmMemoryOperand(const MachineInstr *MI, unsigned OpNo,
+                               unsigned AsmVariant, const char *ExtraCode,
+                               raw_ostream &O);
+  };
+} // end of anonymous namespace
+
+#include "BlackfinGenAsmWriter.inc"
+
+extern "C" void LLVMInitializeBlackfinAsmPrinter() {
+  RegisterAsmPrinter<BlackfinAsmPrinter> X(TheBlackfinTarget);
+}
+
+void BlackfinAsmPrinter::printOperand(const MachineInstr *MI, int opNum,
+                                      raw_ostream &O) {
+  const MachineOperand &MO = MI->getOperand(opNum);
+  switch (MO.getType()) {
+  case MachineOperand::MO_Register:
+    assert(TargetRegisterInfo::isPhysicalRegister(MO.getReg()) &&
+           "Virtual registers should be already mapped!");
+    O << getRegisterName(MO.getReg());
+    break;
+
+  case MachineOperand::MO_Immediate:
+    O << MO.getImm();
+    break;
+  case MachineOperand::MO_MachineBasicBlock:
+    O << *MO.getMBB()->getSymbol();
+    return;
+  case MachineOperand::MO_GlobalAddress:
+    O << *Mang->getSymbol(MO.getGlobal());
+    printOffset(MO.getOffset(), O);
+    break;
+  case MachineOperand::MO_ExternalSymbol:
+    O << *GetExternalSymbolSymbol(MO.getSymbolName());
+    break;
+  case MachineOperand::MO_ConstantPoolIndex:
+    O << MAI->getPrivateGlobalPrefix() << "CPI" << getFunctionNumber() << "_"
+      << MO.getIndex();
+    break;
+  case MachineOperand::MO_JumpTableIndex:
+    O << MAI->getPrivateGlobalPrefix() << "JTI" << getFunctionNumber()
+      << '_' << MO.getIndex();
+    break;
+  default:
+    llvm_unreachable("<unknown operand type>");
+    break;
+  }
+}
+
+void BlackfinAsmPrinter::printMemoryOperand(const MachineInstr *MI, int opNum,
+                                            raw_ostream &O) {
+  printOperand(MI, opNum, O);
+
+  if (MI->getOperand(opNum+1).isImm() && MI->getOperand(opNum+1).getImm() == 0)
+    return;
+
+  O << " + ";
+  printOperand(MI, opNum+1, O);
+}
+
+/// PrintAsmOperand - Print out an operand for an inline asm expression.
+///
+bool BlackfinAsmPrinter::PrintAsmOperand(const MachineInstr *MI,
+                                         unsigned OpNo, unsigned AsmVariant,
+                                         const char *ExtraCode,
+                                         raw_ostream &O) {
+  if (ExtraCode && ExtraCode[0]) {
+    if (ExtraCode[1] != 0) return true; // Unknown modifier.
+
+    switch (ExtraCode[0]) {
+    default: return true;  // Unknown modifier.
+    case 'r':
+      break;
+    }
+  }
+
+  printOperand(MI, OpNo, O);
+
+  return false;
+}
+
+bool BlackfinAsmPrinter::PrintAsmMemoryOperand(const MachineInstr *MI,
+                                               unsigned OpNo,
+                                               unsigned AsmVariant,
+                                               const char *ExtraCode,
+                                               raw_ostream &O) {
+  if (ExtraCode && ExtraCode[0])
+    return true;  // Unknown modifier
+
+  O << '[';
+  printOperand(MI, OpNo, O);
+  O << ']';
+
+  return false;
+}