1 files changed, 144 insertions, 0 deletions
diff --git a/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
new file mode 100644
index 0000000..f8fcf2b
--- /dev/null
+++ b/lib/Target/ARM/MCTargetDesc/ARMMCTargetDesc.cpp
@@ -0,0 +1,144 @@
+//===-- ARMMCTargetDesc.cpp - ARM Target Descriptions -----------*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file provides ARM specific target descriptions.
+//
+//===----------------------------------------------------------------------===//
+
+#include "ARMMCTargetDesc.h"
+#include "ARMMCAsmInfo.h"
+#include "llvm/MC/MCInstrInfo.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCSubtargetInfo.h"
+#include "llvm/Target/TargetRegistry.h"
+
+#define GET_REGINFO_MC_DESC
+#include "ARMGenRegisterInfo.inc"
+
+#define GET_INSTRINFO_MC_DESC
+#include "ARMGenInstrInfo.inc"
+
+#define GET_SUBTARGETINFO_MC_DESC
+#include "ARMGenSubtargetInfo.inc"
+
+using namespace llvm;
+
+std::string ARM_MC::ParseARMTriple(StringRef TT) {
+  // Set the boolean corresponding to the current target triple, or the default
+  // if one cannot be determined, to true.
+  unsigned Len = TT.size();
+  unsigned Idx = 0;
+
+  // FIXME: Enahnce Triple helper class to extract ARM version.
+  bool isThumb = false;
+  if (Len >= 5 && TT.substr(0, 4) == "armv")
+    Idx = 4;
+  else if (Len >= 6 && TT.substr(0, 5) == "thumb") {
+    isThumb = true;
+    if (Len >= 7 && TT[5] == 'v')
+      Idx = 6;
+  }
+
+  std::string ARMArchFeature;
+  if (Idx) {
+    unsigned SubVer = TT[Idx];
+    if (SubVer >= '7' && SubVer <= '9') {
+      if (Len >= Idx+2 && TT[Idx+1] == 'm') {
+        // v7m: FeatureNoARM, FeatureDB, FeatureHWDiv
+        ARMArchFeature = "+v7,+noarm,+db,+hwdiv";
+      } else if (Len >= Idx+3 && TT[Idx+1] == 'e'&& TT[Idx+2] == 'm') {
+        // v7em: FeatureNoARM, FeatureDB, FeatureHWDiv, FeatureDSPThumb2,
+        //       FeatureT2XtPk
+        ARMArchFeature = "+v7,+noarm,+db,+hwdiv,+t2dsp,t2xtpk";
+      } else
+        // v7a: FeatureNEON, FeatureDB, FeatureDSPThumb2
+        ARMArchFeature = "+v7,+neon,+db,+t2dsp";
+    } else if (SubVer == '6') {
+      if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == '2')
+        ARMArchFeature = "+v6t2";
+      else
+        ARMArchFeature = "+v6";
+    } else if (SubVer == '5') {
+      if (Len >= Idx+3 && TT[Idx+1] == 't' && TT[Idx+2] == 'e')
+        ARMArchFeature = "+v5te";
+      else
+        ARMArchFeature = "+v5t";
+    } else if (SubVer == '4' && Len >= Idx+2 && TT[Idx+1] == 't')
+      ARMArchFeature = "+v4t";
+  }
+
+  if (isThumb) {
+    if (ARMArchFeature.empty())
+      ARMArchFeature = "+thumb-mode";
+    else
+      ARMArchFeature += ",+thumb-mode";
+  }
+
+  return ARMArchFeature;
+}
+
+MCSubtargetInfo *ARM_MC::createARMMCSubtargetInfo(StringRef TT, StringRef CPU,
+                                                  StringRef FS) {
+  std::string ArchFS = ARM_MC::ParseARMTriple(TT);
+  if (!FS.empty()) {
+    if (!ArchFS.empty())
+      ArchFS = ArchFS + "," + FS.str();
+    else
+      ArchFS = FS;
+  }
+
+  MCSubtargetInfo *X = new MCSubtargetInfo();
+  InitARMMCSubtargetInfo(X, TT, CPU, ArchFS);
+  return X;
+}
+
+// Force static initialization.
+extern "C" void LLVMInitializeARMMCSubtargetInfo() {
+  TargetRegistry::RegisterMCSubtargetInfo(TheARMTarget,
+                                          ARM_MC::createARMMCSubtargetInfo);
+  TargetRegistry::RegisterMCSubtargetInfo(TheThumbTarget,
+                                          ARM_MC::createARMMCSubtargetInfo);
+}
+
+static MCInstrInfo *createARMMCInstrInfo() {
+  MCInstrInfo *X = new MCInstrInfo();
+  InitARMMCInstrInfo(X);
+  return X;
+}
+
+extern "C" void LLVMInitializeARMMCInstrInfo() {
+  TargetRegistry::RegisterMCInstrInfo(TheARMTarget, createARMMCInstrInfo);
+  TargetRegistry::RegisterMCInstrInfo(TheThumbTarget, createARMMCInstrInfo);
+}
+
+static MCRegisterInfo *createARMMCRegisterInfo() {
+  MCRegisterInfo *X = new MCRegisterInfo();
+  InitARMMCRegisterInfo(X);
+  return X;
+}
+
+extern "C" void LLVMInitializeARMMCRegInfo() {
+  TargetRegistry::RegisterMCRegInfo(TheARMTarget, createARMMCRegisterInfo);
+  TargetRegistry::RegisterMCRegInfo(TheThumbTarget, createARMMCRegisterInfo);
+}
+
+static MCAsmInfo *createARMMCAsmInfo(const Target &T, StringRef TT) {
+  Triple TheTriple(TT);
+
+  if (TheTriple.isOSDarwin())
+    return new ARMMCAsmInfoDarwin();
+
+  return new ARMELFMCAsmInfo();
+}
+
+extern "C" void LLVMInitializeARMMCAsmInfo() {
+  // Register the target asm info.
+  RegisterMCAsmInfoFn A(TheARMTarget, createARMMCAsmInfo);
+  RegisterMCAsmInfoFn B(TheThumbTarget, createARMMCAsmInfo);
+}