| //===-- ARMBaseInfo.h - Top level definitions for ARM -------- --*- 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 ARM 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 ARMBASEINFO_H |
| #define ARMBASEINFO_H |
| |
| #include "ARMMCTargetDesc.h" |
| #include "llvm/Support/ErrorHandling.h" |
| |
| namespace llvm { |
| |
| // Enums corresponding to ARM condition codes |
| namespace ARMCC { |
| // The CondCodes constants map directly to the 4-bit encoding of the |
| // condition field for predicated instructions. |
| enum CondCodes { // Meaning (integer) Meaning (floating-point) |
| EQ, // Equal Equal |
| NE, // Not equal Not equal, or unordered |
| HS, // Carry set >, ==, or unordered |
| LO, // Carry clear Less than |
| MI, // Minus, negative Less than |
| PL, // Plus, positive or zero >, ==, or unordered |
| VS, // Overflow Unordered |
| VC, // No overflow Not unordered |
| HI, // Unsigned higher Greater than, or unordered |
| LS, // Unsigned lower or same Less than or equal |
| GE, // Greater than or equal Greater than or equal |
| LT, // Less than Less than, or unordered |
| GT, // Greater than Greater than |
| LE, // Less than or equal <, ==, or unordered |
| AL // Always (unconditional) Always (unconditional) |
| }; |
| |
| inline static CondCodes getOppositeCondition(CondCodes CC) { |
| switch (CC) { |
| default: llvm_unreachable("Unknown condition code"); |
| case EQ: return NE; |
| case NE: return EQ; |
| case HS: return LO; |
| case LO: return HS; |
| case MI: return PL; |
| case PL: return MI; |
| case VS: return VC; |
| case VC: return VS; |
| case HI: return LS; |
| case LS: return HI; |
| case GE: return LT; |
| case LT: return GE; |
| case GT: return LE; |
| case LE: return GT; |
| } |
| } |
| } // namespace ARMCC |
| |
| inline static const char *ARMCondCodeToString(ARMCC::CondCodes CC) { |
| switch (CC) { |
| default: llvm_unreachable("Unknown condition code"); |
| case ARMCC::EQ: return "eq"; |
| case ARMCC::NE: return "ne"; |
| case ARMCC::HS: return "hs"; |
| case ARMCC::LO: return "lo"; |
| case ARMCC::MI: return "mi"; |
| case ARMCC::PL: return "pl"; |
| case ARMCC::VS: return "vs"; |
| case ARMCC::VC: return "vc"; |
| case ARMCC::HI: return "hi"; |
| case ARMCC::LS: return "ls"; |
| case ARMCC::GE: return "ge"; |
| case ARMCC::LT: return "lt"; |
| case ARMCC::GT: return "gt"; |
| case ARMCC::LE: return "le"; |
| case ARMCC::AL: return "al"; |
| } |
| } |
| |
| namespace ARM_PROC { |
| enum IMod { |
| IE = 2, |
| ID = 3 |
| }; |
| |
| enum IFlags { |
| F = 1, |
| I = 2, |
| A = 4 |
| }; |
| |
| inline static const char *IFlagsToString(unsigned val) { |
| switch (val) { |
| default: llvm_unreachable("Unknown iflags operand"); |
| case F: return "f"; |
| case I: return "i"; |
| case A: return "a"; |
| } |
| } |
| |
| inline static const char *IModToString(unsigned val) { |
| switch (val) { |
| default: llvm_unreachable("Unknown imod operand"); |
| case IE: return "ie"; |
| case ID: return "id"; |
| } |
| } |
| } |
| |
| namespace ARM_MB { |
| // The Memory Barrier Option constants map directly to the 4-bit encoding of |
| // the option field for memory barrier operations. |
| enum MemBOpt { |
| SY = 15, |
| ST = 14, |
| ISH = 11, |
| ISHST = 10, |
| NSH = 7, |
| NSHST = 6, |
| OSH = 3, |
| OSHST = 2 |
| }; |
| |
| inline static const char *MemBOptToString(unsigned val) { |
| switch (val) { |
| default: llvm_unreachable("Unknown memory operation"); |
| case SY: return "sy"; |
| case ST: return "st"; |
| case ISH: return "ish"; |
| case ISHST: return "ishst"; |
| case NSH: return "nsh"; |
| case NSHST: return "nshst"; |
| case OSH: return "osh"; |
| case OSHST: return "oshst"; |
| } |
| } |
| } // namespace ARM_MB |
| |
| /// getARMRegisterNumbering - Given the enum value for some register, e.g. |
| /// ARM::LR, return the number that it corresponds to (e.g. 14). |
| inline static unsigned getARMRegisterNumbering(unsigned Reg) { |
| using namespace ARM; |
| switch (Reg) { |
| default: |
| llvm_unreachable("Unknown ARM register!"); |
| case R0: case S0: case D0: case Q0: return 0; |
| case R1: case S1: case D1: case Q1: return 1; |
| case R2: case S2: case D2: case Q2: return 2; |
| case R3: case S3: case D3: case Q3: return 3; |
| case R4: case S4: case D4: case Q4: return 4; |
| case R5: case S5: case D5: case Q5: return 5; |
| case R6: case S6: case D6: case Q6: return 6; |
| case R7: case S7: case D7: case Q7: return 7; |
| case R8: case S8: case D8: case Q8: return 8; |
| case R9: case S9: case D9: case Q9: return 9; |
| case R10: case S10: case D10: case Q10: return 10; |
| case R11: case S11: case D11: case Q11: return 11; |
| case R12: case S12: case D12: case Q12: return 12; |
| case SP: case S13: case D13: case Q13: return 13; |
| case LR: case S14: case D14: case Q14: return 14; |
| case PC: case S15: case D15: case Q15: return 15; |
| |
| case S16: case D16: return 16; |
| case S17: case D17: return 17; |
| case S18: case D18: return 18; |
| case S19: case D19: return 19; |
| case S20: case D20: return 20; |
| case S21: case D21: return 21; |
| case S22: case D22: return 22; |
| case S23: case D23: return 23; |
| case S24: case D24: return 24; |
| case S25: case D25: return 25; |
| case S26: case D26: return 26; |
| case S27: case D27: return 27; |
| case S28: case D28: return 28; |
| case S29: case D29: return 29; |
| case S30: case D30: return 30; |
| case S31: case D31: return 31; |
| } |
| } |
| |
| /// isARMLowRegister - Returns true if the register is a low register (r0-r7). |
| /// |
| static inline bool isARMLowRegister(unsigned Reg) { |
| using namespace ARM; |
| switch (Reg) { |
| case R0: case R1: case R2: case R3: |
| case R4: case R5: case R6: case R7: |
| return true; |
| default: |
| return false; |
| } |
| } |
| |
| /// ARMII - This namespace holds all of the target specific flags that |
| /// instruction info tracks. |
| /// |
| namespace ARMII { |
| |
| /// ARM Index Modes |
| enum IndexMode { |
| IndexModeNone = 0, |
| IndexModePre = 1, |
| IndexModePost = 2, |
| IndexModeUpd = 3 |
| }; |
| |
| /// ARM Addressing Modes |
| enum AddrMode { |
| AddrModeNone = 0, |
| AddrMode1 = 1, |
| AddrMode2 = 2, |
| AddrMode3 = 3, |
| AddrMode4 = 4, |
| AddrMode5 = 5, |
| AddrMode6 = 6, |
| AddrModeT1_1 = 7, |
| AddrModeT1_2 = 8, |
| AddrModeT1_4 = 9, |
| AddrModeT1_s = 10, // i8 * 4 for pc and sp relative data |
| AddrModeT2_i12 = 11, |
| AddrModeT2_i8 = 12, |
| AddrModeT2_so = 13, |
| AddrModeT2_pc = 14, // +/- i12 for pc relative data |
| AddrModeT2_i8s4 = 15, // i8 * 4 |
| AddrMode_i12 = 16 |
| }; |
| |
| inline static const char *AddrModeToString(AddrMode addrmode) { |
| switch (addrmode) { |
| default: llvm_unreachable("Unknown memory operation"); |
| case AddrModeNone: return "AddrModeNone"; |
| case AddrMode1: return "AddrMode1"; |
| case AddrMode2: return "AddrMode2"; |
| case AddrMode3: return "AddrMode3"; |
| case AddrMode4: return "AddrMode4"; |
| case AddrMode5: return "AddrMode5"; |
| case AddrMode6: return "AddrMode6"; |
| case AddrModeT1_1: return "AddrModeT1_1"; |
| case AddrModeT1_2: return "AddrModeT1_2"; |
| case AddrModeT1_4: return "AddrModeT1_4"; |
| case AddrModeT1_s: return "AddrModeT1_s"; |
| case AddrModeT2_i12: return "AddrModeT2_i12"; |
| case AddrModeT2_i8: return "AddrModeT2_i8"; |
| case AddrModeT2_so: return "AddrModeT2_so"; |
| case AddrModeT2_pc: return "AddrModeT2_pc"; |
| case AddrModeT2_i8s4: return "AddrModeT2_i8s4"; |
| case AddrMode_i12: return "AddrMode_i12"; |
| } |
| } |
| |
| /// Target Operand Flag enum. |
| enum TOF { |
| //===------------------------------------------------------------------===// |
| // ARM Specific MachineOperand flags. |
| |
| MO_NO_FLAG, |
| |
| /// MO_LO16 - On a symbol operand, this represents a relocation containing |
| /// lower 16 bit of the address. Used only via movw instruction. |
| MO_LO16, |
| |
| /// MO_HI16 - On a symbol operand, this represents a relocation containing |
| /// higher 16 bit of the address. Used only via movt instruction. |
| MO_HI16, |
| |
| /// MO_LO16_NONLAZY - On a symbol operand "FOO", this represents a |
| /// relocation containing lower 16 bit of the non-lazy-ptr indirect symbol, |
| /// i.e. "FOO$non_lazy_ptr". |
| /// Used only via movw instruction. |
| MO_LO16_NONLAZY, |
| |
| /// MO_HI16_NONLAZY - On a symbol operand "FOO", this represents a |
| /// relocation containing lower 16 bit of the non-lazy-ptr indirect symbol, |
| /// i.e. "FOO$non_lazy_ptr". Used only via movt instruction. |
| MO_HI16_NONLAZY, |
| |
| /// MO_LO16_NONLAZY_PIC - On a symbol operand "FOO", this represents a |
| /// relocation containing lower 16 bit of the PC relative address of the |
| /// non-lazy-ptr indirect symbol, i.e. "FOO$non_lazy_ptr - LABEL". |
| /// Used only via movw instruction. |
| MO_LO16_NONLAZY_PIC, |
| |
| /// MO_HI16_NONLAZY_PIC - On a symbol operand "FOO", this represents a |
| /// relocation containing lower 16 bit of the PC relative address of the |
| /// non-lazy-ptr indirect symbol, i.e. "FOO$non_lazy_ptr - LABEL". |
| /// Used only via movt instruction. |
| MO_HI16_NONLAZY_PIC, |
| |
| /// MO_PLT - On a symbol operand, this represents an ELF PLT reference on a |
| /// call operand. |
| MO_PLT |
| }; |
| |
| enum { |
| //===------------------------------------------------------------------===// |
| // Instruction Flags. |
| |
| //===------------------------------------------------------------------===// |
| // This four-bit field describes the addressing mode used. |
| AddrModeMask = 0x1f, // The AddrMode enums are declared in ARMBaseInfo.h |
| |
| // IndexMode - Unindex, pre-indexed, or post-indexed are valid for load |
| // and store ops only. Generic "updating" flag is used for ld/st multiple. |
| // The index mode enums are declared in ARMBaseInfo.h |
| IndexModeShift = 5, |
| IndexModeMask = 3 << IndexModeShift, |
| |
| //===------------------------------------------------------------------===// |
| // Instruction encoding formats. |
| // |
| FormShift = 7, |
| FormMask = 0x3f << FormShift, |
| |
| // Pseudo instructions |
| Pseudo = 0 << FormShift, |
| |
| // Multiply instructions |
| MulFrm = 1 << FormShift, |
| |
| // Branch instructions |
| BrFrm = 2 << FormShift, |
| BrMiscFrm = 3 << FormShift, |
| |
| // Data Processing instructions |
| DPFrm = 4 << FormShift, |
| DPSoRegFrm = 5 << FormShift, |
| |
| // Load and Store |
| LdFrm = 6 << FormShift, |
| StFrm = 7 << FormShift, |
| LdMiscFrm = 8 << FormShift, |
| StMiscFrm = 9 << FormShift, |
| LdStMulFrm = 10 << FormShift, |
| |
| LdStExFrm = 11 << FormShift, |
| |
| // Miscellaneous arithmetic instructions |
| ArithMiscFrm = 12 << FormShift, |
| SatFrm = 13 << FormShift, |
| |
| // Extend instructions |
| ExtFrm = 14 << FormShift, |
| |
| // VFP formats |
| VFPUnaryFrm = 15 << FormShift, |
| VFPBinaryFrm = 16 << FormShift, |
| VFPConv1Frm = 17 << FormShift, |
| VFPConv2Frm = 18 << FormShift, |
| VFPConv3Frm = 19 << FormShift, |
| VFPConv4Frm = 20 << FormShift, |
| VFPConv5Frm = 21 << FormShift, |
| VFPLdStFrm = 22 << FormShift, |
| VFPLdStMulFrm = 23 << FormShift, |
| VFPMiscFrm = 24 << FormShift, |
| |
| // Thumb format |
| ThumbFrm = 25 << FormShift, |
| |
| // Miscelleaneous format |
| MiscFrm = 26 << FormShift, |
| |
| // NEON formats |
| NGetLnFrm = 27 << FormShift, |
| NSetLnFrm = 28 << FormShift, |
| NDupFrm = 29 << FormShift, |
| NLdStFrm = 30 << FormShift, |
| N1RegModImmFrm= 31 << FormShift, |
| N2RegFrm = 32 << FormShift, |
| NVCVTFrm = 33 << FormShift, |
| NVDupLnFrm = 34 << FormShift, |
| N2RegVShLFrm = 35 << FormShift, |
| N2RegVShRFrm = 36 << FormShift, |
| N3RegFrm = 37 << FormShift, |
| N3RegVShFrm = 38 << FormShift, |
| NVExtFrm = 39 << FormShift, |
| NVMulSLFrm = 40 << FormShift, |
| NVTBLFrm = 41 << FormShift, |
| |
| //===------------------------------------------------------------------===// |
| // Misc flags. |
| |
| // UnaryDP - Indicates this is a unary data processing instruction, i.e. |
| // it doesn't have a Rn operand. |
| UnaryDP = 1 << 13, |
| |
| // Xform16Bit - Indicates this Thumb2 instruction may be transformed into |
| // a 16-bit Thumb instruction if certain conditions are met. |
| Xform16Bit = 1 << 14, |
| |
| // ThumbArithFlagSetting - The instruction is a 16-bit flag setting Thumb |
| // instruction. Used by the parser to determine whether to require the 'S' |
| // suffix on the mnemonic (when not in an IT block) or preclude it (when |
| // in an IT block). |
| ThumbArithFlagSetting = 1 << 18, |
| |
| //===------------------------------------------------------------------===// |
| // Code domain. |
| DomainShift = 15, |
| DomainMask = 7 << DomainShift, |
| DomainGeneral = 0 << DomainShift, |
| DomainVFP = 1 << DomainShift, |
| DomainNEON = 2 << DomainShift, |
| DomainNEONA8 = 4 << DomainShift, |
| |
| //===------------------------------------------------------------------===// |
| // Field shifts - such shifts are used to set field while generating |
| // machine instructions. |
| // |
| // FIXME: This list will need adjusting/fixing as the MC code emitter |
| // takes shape and the ARMCodeEmitter.cpp bits go away. |
| ShiftTypeShift = 4, |
| |
| M_BitShift = 5, |
| ShiftImmShift = 5, |
| ShiftShift = 7, |
| N_BitShift = 7, |
| ImmHiShift = 8, |
| SoRotImmShift = 8, |
| RegRsShift = 8, |
| ExtRotImmShift = 10, |
| RegRdLoShift = 12, |
| RegRdShift = 12, |
| RegRdHiShift = 16, |
| RegRnShift = 16, |
| S_BitShift = 20, |
| W_BitShift = 21, |
| AM3_I_BitShift = 22, |
| D_BitShift = 22, |
| U_BitShift = 23, |
| P_BitShift = 24, |
| I_BitShift = 25, |
| CondShift = 28 |
| }; |
| |
| } // end namespace ARMII |
| |
| } // end namespace llvm; |
| |
| #endif |
