//
//===----------------------------------------------------------------------===//
-#ifndef PPCMCTARGETDESC_H
-#define PPCMCTARGETDESC_H
+#ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H
+#define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H
-#include <string>
+// GCC #defines PPC on Linux but we use it as our namespace name
+#undef PPC
+
+#include "llvm/Support/DataTypes.h"
+#include "llvm/Support/MathExtras.h"
namespace llvm {
+class MCAsmBackend;
class MCCodeEmitter;
class MCContext;
class MCInstrInfo;
+class MCObjectWriter;
+class MCRegisterInfo;
class MCSubtargetInfo;
class Target;
-class TargetAsmBackend;
class StringRef;
+class raw_ostream;
extern Target ThePPC32Target;
extern Target ThePPC64Target;
-
+extern Target ThePPC64LETarget;
+
MCCodeEmitter *createPPCMCCodeEmitter(const MCInstrInfo &MCII,
- const MCSubtargetInfo &STI,
+ const MCRegisterInfo &MRI,
MCContext &Ctx);
-TargetAsmBackend *createPPCAsmBackend(const Target &, const std::string &);
-
+MCAsmBackend *createPPCAsmBackend(const Target &T, const MCRegisterInfo &MRI,
+ StringRef TT, StringRef CPU);
+
+/// Construct an PPC ELF object writer.
+MCObjectWriter *createPPCELFObjectWriter(raw_ostream &OS,
+ bool Is64Bit,
+ bool IsLittleEndian,
+ uint8_t OSABI);
+/// Construct a PPC Mach-O object writer.
+MCObjectWriter *createPPCMachObjectWriter(raw_ostream &OS, bool Is64Bit,
+ uint32_t CPUType,
+ uint32_t CPUSubtype);
+
+/// Returns true iff Val consists of one contiguous run of 1s with any number of
+/// 0s on either side. The 1s are allowed to wrap from LSB to MSB, so
+/// 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs. 0x0F0F0000 is not,
+/// since all 1s are not contiguous.
+static inline bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) {
+ if (!Val)
+ return false;
+
+ if (isShiftedMask_32(Val)) {
+ // look for the first non-zero bit
+ MB = countLeadingZeros(Val);
+ // look for the first zero bit after the run of ones
+ ME = countLeadingZeros((Val - 1) ^ Val);
+ return true;
+ } else {
+ Val = ~Val; // invert mask
+ if (isShiftedMask_32(Val)) {
+ // effectively look for the first zero bit
+ ME = countLeadingZeros(Val) - 1;
+ // effectively look for the first one bit after the run of zeros
+ MB = countLeadingZeros((Val - 1) ^ Val) + 1;
+ return true;
+ }
+ }
+ // no run present
+ return false;
+}
+
} // End llvm namespace
+// Generated files will use "namespace PPC". To avoid symbol clash,
+// undefine PPC here. PPC may be predefined on some hosts.
+#undef PPC
+
// Defines symbolic names for PowerPC registers. This defines a mapping from
// register name to register number.
//