1 files changed, 114 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/MSP430/InstPrinter/MSP430InstPrinter.cpp b/contrib/llvm/lib/Target/MSP430/InstPrinter/MSP430InstPrinter.cpp
new file mode 100644
index 000000000000..4b12aeadd3e4
--- /dev/null
+++ b/contrib/llvm/lib/Target/MSP430/InstPrinter/MSP430InstPrinter.cpp
@@ -0,0 +1,114 @@
+//===-- MSP430InstPrinter.cpp - Convert MSP430 MCInst to assembly syntax --===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This class prints an MSP430 MCInst to a .s file.
+//
+//===----------------------------------------------------------------------===//
+
+#define DEBUG_TYPE "asm-printer"
+#include "MSP430InstPrinter.h"
+#include "MSP430.h"
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCExpr.h"
+#include "llvm/MC/MCInst.h"
+#include "llvm/Support/ErrorHandling.h"
+#include "llvm/Support/FormattedStream.h"
+using namespace llvm;
+
+
+// Include the auto-generated portion of the assembly writer.
+#include "MSP430GenAsmWriter.inc"
+
+void MSP430InstPrinter::printInst(const MCInst *MI, raw_ostream &O,
+                                  StringRef Annot) {
+  printInstruction(MI, O);
+  printAnnotation(O, Annot);
+}
+
+void MSP430InstPrinter::printPCRelImmOperand(const MCInst *MI, unsigned OpNo,
+                                             raw_ostream &O) {
+  const MCOperand &Op = MI->getOperand(OpNo);
+  if (Op.isImm())
+    O << Op.getImm();
+  else {
+    assert(Op.isExpr() && "unknown pcrel immediate operand");
+    O << *Op.getExpr();
+  }
+}
+
+void MSP430InstPrinter::printOperand(const MCInst *MI, unsigned OpNo,
+                                     raw_ostream &O, const char *Modifier) {
+  assert((Modifier == 0 || Modifier[0] == 0) && "No modifiers supported");
+  const MCOperand &Op = MI->getOperand(OpNo);
+  if (Op.isReg()) {
+    O << getRegisterName(Op.getReg());
+  } else if (Op.isImm()) {
+    O << '#' << Op.getImm();
+  } else {
+    assert(Op.isExpr() && "unknown operand kind in printOperand");
+    O << '#' << *Op.getExpr();
+  }
+}
+
+void MSP430InstPrinter::printSrcMemOperand(const MCInst *MI, unsigned OpNo,
+                                           raw_ostream &O,
+                                           const char *Modifier) {
+  const MCOperand &Base = MI->getOperand(OpNo);
+  const MCOperand &Disp = MI->getOperand(OpNo+1);
+
+  // Print displacement first
+
+  // If the global address expression is a part of displacement field with a
+  // register base, we should not emit any prefix symbol here, e.g.
+  //   mov.w &foo, r1
+  // vs
+  //   mov.w glb(r1), r2
+  // Otherwise (!) msp430-as will silently miscompile the output :(
+  if (!Base.getReg())
+    O << '&';
+
+  if (Disp.isExpr())
+    O << *Disp.getExpr();
+  else {
+    assert(Disp.isImm() && "Expected immediate in displacement field");
+    O << Disp.getImm();
+  }
+
+  // Print register base field
+  if (Base.getReg())
+    O << '(' << getRegisterName(Base.getReg()) << ')';
+}
+
+void MSP430InstPrinter::printCCOperand(const MCInst *MI, unsigned OpNo,
+                                       raw_ostream &O) {
+  unsigned CC = MI->getOperand(OpNo).getImm();
+
+  switch (CC) {
+  default:
+   llvm_unreachable("Unsupported CC code");
+  case MSP430CC::COND_E:
+   O << "eq";
+   break;
+  case MSP430CC::COND_NE:
+   O << "ne";
+   break;
+  case MSP430CC::COND_HS:
+   O << "hs";
+   break;
+  case MSP430CC::COND_LO:
+   O << "lo";
+   break;
+  case MSP430CC::COND_GE:
+   O << "ge";
+   break;
+  case MSP430CC::COND_L:
+   O << 'l';
+   break;
+  }
+}