1 files changed, 82 insertions, 0 deletions
diff --git a/lib/Target/ARM/ARMSubtarget.h b/lib/Target/ARM/ARMSubtarget.h
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+++ b/lib/Target/ARM/ARMSubtarget.h
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+//=====---- ARMSubtarget.h - Define Subtarget for the ARM -----*- C++ -*--====//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file was developed by Evan Cheng and is distributed under the
+// University of Illinois Open Source License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+//
+// This file declares the ARM specific subclass of TargetSubtarget.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef ARMSUBTARGET_H
+#define ARMSUBTARGET_H
+
+#include "llvm/Target/TargetSubtarget.h"
+#include <string>
+
+namespace llvm {
+class Module;
+
+class ARMSubtarget : public TargetSubtarget {
+protected:
+  enum ARMArchEnum {
+    V4T, V5T, V5TE, V6
+  };
+
+  /// ARMArchVersion - ARM architecture vecrsion: V4T (base), V5T, V5TE,
+  /// and V6.
+  ARMArchEnum ARMArchVersion;
+
+  /// HasVFP2 - True if the processor supports Vector Floating Point (VFP) V2
+  /// instructions.
+  bool HasVFP2;
+
+  /// IsThumb - True if we are in thumb mode, false if in ARM mode.
+  bool IsThumb;
+
+  bool IsDarwin;
+  
+  /// UseThumbBacktraces - True if we use thumb style backtraces.
+  bool UseThumbBacktraces;
+
+  /// IsR9Reserved - True if R9 is a not available as general purpose register.
+  bool IsR9Reserved;
+  
+  /// stackAlignment - The minimum alignment known to hold of the stack frame on
+  /// entry to the function and which must be maintained by every function.
+  unsigned stackAlignment;
+
+ public:
+  /// This constructor initializes the data members to match that
+  /// of the specified module.
+  ///
+  ARMSubtarget(const Module &M, const std::string &FS);
+
+  /// ParseSubtargetFeatures - Parses features string setting specified 
+  /// subtarget options.  Definition of function is auto generated by tblgen.
+  void ParseSubtargetFeatures(const std::string &FS, const std::string &CPU);
+
+  bool hasV4TOps()  const { return ARMArchVersion >= V4T; }
+  bool hasV5TOps()  const { return ARMArchVersion >= V5T; }
+  bool hasV5TEOps() const { return ARMArchVersion >= V5TE; }
+  bool hasV6Ops()   const { return ARMArchVersion >= V6; }
+
+  bool hasVFP2() const { return HasVFP2; }
+  
+  bool isDarwin() const { return IsDarwin; }
+  bool isThumb() const { return IsThumb; }
+
+  bool useThumbBacktraces() const { return UseThumbBacktraces; }
+  bool isR9Reserved() const { return IsR9Reserved; }
+
+  /// getStackAlignment - Returns the minimum alignment known to hold of the
+  /// stack frame on entry to the function and which must be maintained by every
+  /// function for this subtarget.
+  unsigned getStackAlignment() const { return stackAlignment; }
+};
+} // End llvm namespace
+
+#endif  // ARMSUBTARGET_H