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//===-- HexagonBaseInfo.h - Top level definitions for Hexagon --*- C++ -*--===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//
// This file contains small standalone helper functions and enum definitions for
// the Hexagon target useful for the compiler back-end and the MC libraries.
// As such, it deliberately does not include references to LLVM core
// code gen types, passes, etc..
//
//===----------------------------------------------------------------------===//
#ifndef HEXAGONBASEINFO_H
#define HEXAGONBASEINFO_H
#include "HexagonMCTargetDesc.h"
#include "llvm/Support/ErrorHandling.h"
namespace llvm {
/// HexagonII - This namespace holds all of the target specific flags that
/// instruction info tracks.
///
namespace HexagonII {
// *** The code below must match HexagonInstrFormat*.td *** //
// Insn types.
// *** Must match HexagonInstrFormat*.td ***
enum Type {
TypePSEUDO = 0,
TypeALU32 = 1,
TypeCR = 2,
TypeJR = 3,
TypeJ = 4,
TypeLD = 5,
TypeST = 6,
TypeSYSTEM = 7,
TypeXTYPE = 8,
TypeMEMOP = 9,
TypeNV = 10,
TypePREFIX = 30, // Such as extenders.
TypeENDLOOP = 31 // Such as end of a HW loop.
};
enum SubTarget {
HasV2SubT = 0xf,
HasV2SubTOnly = 0x1,
NoV2SubT = 0x0,
HasV3SubT = 0xe,
HasV3SubTOnly = 0x2,
NoV3SubT = 0x1,
HasV4SubT = 0xc,
NoV4SubT = 0x3,
HasV5SubT = 0x8,
NoV5SubT = 0x7
};
enum AddrMode {
NoAddrMode = 0, // No addressing mode
Absolute = 1, // Absolute addressing mode
AbsoluteSet = 2, // Absolute set addressing mode
BaseImmOffset = 3, // Indirect with offset
BaseLongOffset = 4, // Indirect with long offset
BaseRegOffset = 5, // Indirect with register offset
PostInc = 6 // Post increment addressing mode
};
enum MemAccessSize {
NoMemAccess = 0, // Not a memory acces instruction.
ByteAccess = 1, // Byte access instruction (memb).
HalfWordAccess = 2, // Half word access instruction (memh).
WordAccess = 3, // Word access instrution (memw).
DoubleWordAccess = 4 // Double word access instruction (memd)
};
// MCInstrDesc TSFlags
// *** Must match HexagonInstrFormat*.td ***
enum {
// This 5-bit field describes the insn type.
TypePos = 0,
TypeMask = 0x1f,
// Solo instructions.
SoloPos = 5,
SoloMask = 0x1,
// Predicated instructions.
PredicatedPos = 6,
PredicatedMask = 0x1,
PredicatedFalsePos = 7,
PredicatedFalseMask = 0x1,
PredicatedNewPos = 8,
PredicatedNewMask = 0x1,
// New-Value consumer instructions.
NewValuePos = 9,
NewValueMask = 0x1,
// New-Value producer instructions.
hasNewValuePos = 10,
hasNewValueMask = 0x1,
// Which operand consumes or produces a new value.
NewValueOpPos = 11,
NewValueOpMask = 0x7,
// Which bits encode the new value.
NewValueBitsPos = 14,
NewValueBitsMask = 0x3,
// Stores that can become new-value stores.
mayNVStorePos = 16,
mayNVStoreMask = 0x1,
// New-value store instructions.
NVStorePos = 17,
NVStoreMask = 0x1,
// Extendable insns.
ExtendablePos = 18,
ExtendableMask = 0x1,
// Insns must be extended.
ExtendedPos = 19,
ExtendedMask = 0x1,
// Which operand may be extended.
ExtendableOpPos = 20,
ExtendableOpMask = 0x7,
// Signed or unsigned range.
ExtentSignedPos = 23,
ExtentSignedMask = 0x1,
// Number of bits of range before extending operand.
ExtentBitsPos = 24,
ExtentBitsMask = 0x1f,
// Valid subtargets
validSubTargetPos = 29,
validSubTargetMask = 0xf,
// Addressing mode for load/store instructions.
AddrModePos = 33,
AddrModeMask = 0x7,
// Access size of memory access instructions (load/store).
MemAccessSizePos = 36,
MemAccesSizeMask = 0x7
};
// *** The code above must match HexagonInstrFormat*.td *** //
// Hexagon specific MO operand flag mask.
enum HexagonMOTargetFlagVal {
//===------------------------------------------------------------------===//
// Hexagon Specific MachineOperand flags.
MO_NO_FLAG,
HMOTF_ConstExtended = 1,
/// MO_PCREL - On a symbol operand, indicates a PC-relative relocation
/// Used for computing a global address for PIC compilations
MO_PCREL,
/// MO_GOT - Indicates a GOT-relative relocation
MO_GOT,
// Low or high part of a symbol.
MO_LO16, MO_HI16,
// Offset from the base of the SDA.
MO_GPREL
};
} // End namespace HexagonII.
} // End namespace llvm.
#endif
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