| //===-- 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 "llvm/Support/ErrorHandling.h" |
| |
| // Note that the following auto-generated files only defined enum types, and |
| // so are safe to include here. |
| |
| // Defines symbolic names for ARM registers. This defines a mapping from |
| // register name to register number. |
| // |
| #include "ARMGenRegisterNames.inc" |
| |
| // Defines symbolic names for the ARM instructions. |
| // |
| #include "ARMGenInstrNames.inc" |
| |
| 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_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; |
| } |
| } |
| |
| namespace ARMII { |
| /// 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_PLT - On a symbol operand, this represents an ELF PLT reference on a |
| /// call operand. |
| MO_PLT |
| }; |
| } // end namespace ARMII |
| |
| } // end namespace llvm; |
| |
| #endif |