1 //===-- PPCMCTargetDesc.h - PowerPC Target Descriptions ---------*- C++ -*-===// 2 // 3 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. 4 // See https://llvm.org/LICENSE.txt for license information. 5 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception 6 // 7 //===----------------------------------------------------------------------===// 8 // 9 // This file provides PowerPC specific target descriptions. 10 // 11 //===----------------------------------------------------------------------===// 12 13 #ifndef LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H 14 #define LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H 15 16 // GCC #defines PPC on Linux but we use it as our namespace name 17 #undef PPC 18 19 #include "llvm/MC/MCRegisterInfo.h" 20 #include "llvm/Support/MathExtras.h" 21 #include <cstdint> 22 #include <memory> 23 24 namespace llvm { 25 26 class MCAsmBackend; 27 class MCCodeEmitter; 28 class MCContext; 29 class MCInstrInfo; 30 class MCObjectTargetWriter; 31 class MCRegisterInfo; 32 class MCSubtargetInfo; 33 class MCTargetOptions; 34 class Target; 35 class Triple; 36 class StringRef; 37 class raw_pwrite_stream; 38 39 MCCodeEmitter *createPPCMCCodeEmitter(const MCInstrInfo &MCII, 40 const MCRegisterInfo &MRI, 41 MCContext &Ctx); 42 43 MCAsmBackend *createPPCAsmBackend(const Target &T, const MCSubtargetInfo &STI, 44 const MCRegisterInfo &MRI, 45 const MCTargetOptions &Options); 46 47 /// Construct an PPC ELF object writer. 48 std::unique_ptr<MCObjectTargetWriter> createPPCELFObjectWriter(bool Is64Bit, 49 uint8_t OSABI); 50 /// Construct a PPC Mach-O object writer. 51 std::unique_ptr<MCObjectTargetWriter> 52 createPPCMachObjectWriter(bool Is64Bit, uint32_t CPUType, uint32_t CPUSubtype); 53 54 /// Construct a PPC XCOFF object writer. 55 std::unique_ptr<MCObjectTargetWriter> createPPCXCOFFObjectWriter(bool Is64Bit); 56 57 /// Returns true iff Val consists of one contiguous run of 1s with any number of 58 /// 0s on either side. The 1s are allowed to wrap from LSB to MSB, so 59 /// 0x000FFF0, 0x0000FFFF, and 0xFF0000FF are all runs. 0x0F0F0000 is not, 60 /// since all 1s are not contiguous. 61 static inline bool isRunOfOnes(unsigned Val, unsigned &MB, unsigned &ME) { 62 if (!Val) 63 return false; 64 65 if (isShiftedMask_32(Val)) { 66 // look for the first non-zero bit 67 MB = countLeadingZeros(Val); 68 // look for the first zero bit after the run of ones 69 ME = countLeadingZeros((Val - 1) ^ Val); 70 return true; 71 } else { 72 Val = ~Val; // invert mask 73 if (isShiftedMask_32(Val)) { 74 // effectively look for the first zero bit 75 ME = countLeadingZeros(Val) - 1; 76 // effectively look for the first one bit after the run of zeros 77 MB = countLeadingZeros((Val - 1) ^ Val) + 1; 78 return true; 79 } 80 } 81 // no run present 82 return false; 83 } 84 85 } // end namespace llvm 86 87 // Generated files will use "namespace PPC". To avoid symbol clash, 88 // undefine PPC here. PPC may be predefined on some hosts. 89 #undef PPC 90 91 // Defines symbolic names for PowerPC registers. This defines a mapping from 92 // register name to register number. 93 // 94 #define GET_REGINFO_ENUM 95 #include "PPCGenRegisterInfo.inc" 96 97 // Defines symbolic names for the PowerPC instructions. 98 // 99 #define GET_INSTRINFO_ENUM 100 #define GET_INSTRINFO_SCHED_ENUM 101 #include "PPCGenInstrInfo.inc" 102 103 #define GET_SUBTARGETINFO_ENUM 104 #include "PPCGenSubtargetInfo.inc" 105 106 #define PPC_REGS0_31(X) \ 107 { \ 108 X##0, X##1, X##2, X##3, X##4, X##5, X##6, X##7, X##8, X##9, X##10, X##11, \ 109 X##12, X##13, X##14, X##15, X##16, X##17, X##18, X##19, X##20, X##21, \ 110 X##22, X##23, X##24, X##25, X##26, X##27, X##28, X##29, X##30, X##31 \ 111 } 112 113 #define PPC_REGS_NO0_31(Z, X) \ 114 { \ 115 Z, X##1, X##2, X##3, X##4, X##5, X##6, X##7, X##8, X##9, X##10, X##11, \ 116 X##12, X##13, X##14, X##15, X##16, X##17, X##18, X##19, X##20, X##21, \ 117 X##22, X##23, X##24, X##25, X##26, X##27, X##28, X##29, X##30, X##31 \ 118 } 119 120 #define PPC_REGS_LO_HI(LO, HI) \ 121 { \ 122 LO##0, LO##1, LO##2, LO##3, LO##4, LO##5, LO##6, LO##7, LO##8, LO##9, \ 123 LO##10, LO##11, LO##12, LO##13, LO##14, LO##15, LO##16, LO##17, \ 124 LO##18, LO##19, LO##20, LO##21, LO##22, LO##23, LO##24, LO##25, \ 125 LO##26, LO##27, LO##28, LO##29, LO##30, LO##31, HI##0, HI##1, HI##2, \ 126 HI##3, HI##4, HI##5, HI##6, HI##7, HI##8, HI##9, HI##10, HI##11, \ 127 HI##12, HI##13, HI##14, HI##15, HI##16, HI##17, HI##18, HI##19, \ 128 HI##20, HI##21, HI##22, HI##23, HI##24, HI##25, HI##26, HI##27, \ 129 HI##28, HI##29, HI##30, HI##31 \ 130 } 131 132 using llvm::MCPhysReg; 133 134 #define DEFINE_PPC_REGCLASSES \ 135 static const MCPhysReg RRegs[32] = PPC_REGS0_31(PPC::R); \ 136 static const MCPhysReg XRegs[32] = PPC_REGS0_31(PPC::X); \ 137 static const MCPhysReg FRegs[32] = PPC_REGS0_31(PPC::F); \ 138 static const MCPhysReg SPERegs[32] = PPC_REGS0_31(PPC::S); \ 139 static const MCPhysReg VFRegs[32] = PPC_REGS0_31(PPC::VF); \ 140 static const MCPhysReg VRegs[32] = PPC_REGS0_31(PPC::V); \ 141 static const MCPhysReg QFRegs[32] = PPC_REGS0_31(PPC::QF); \ 142 static const MCPhysReg RRegsNoR0[32] = \ 143 PPC_REGS_NO0_31(PPC::ZERO, PPC::R); \ 144 static const MCPhysReg XRegsNoX0[32] = \ 145 PPC_REGS_NO0_31(PPC::ZERO8, PPC::X); \ 146 static const MCPhysReg VSRegs[64] = \ 147 PPC_REGS_LO_HI(PPC::VSL, PPC::V); \ 148 static const MCPhysReg VSFRegs[64] = \ 149 PPC_REGS_LO_HI(PPC::F, PPC::VF); \ 150 static const MCPhysReg VSSRegs[64] = \ 151 PPC_REGS_LO_HI(PPC::F, PPC::VF); \ 152 static const MCPhysReg CRBITRegs[32] = { \ 153 PPC::CR0LT, PPC::CR0GT, PPC::CR0EQ, PPC::CR0UN, \ 154 PPC::CR1LT, PPC::CR1GT, PPC::CR1EQ, PPC::CR1UN, \ 155 PPC::CR2LT, PPC::CR2GT, PPC::CR2EQ, PPC::CR2UN, \ 156 PPC::CR3LT, PPC::CR3GT, PPC::CR3EQ, PPC::CR3UN, \ 157 PPC::CR4LT, PPC::CR4GT, PPC::CR4EQ, PPC::CR4UN, \ 158 PPC::CR5LT, PPC::CR5GT, PPC::CR5EQ, PPC::CR5UN, \ 159 PPC::CR6LT, PPC::CR6GT, PPC::CR6EQ, PPC::CR6UN, \ 160 PPC::CR7LT, PPC::CR7GT, PPC::CR7EQ, PPC::CR7UN}; \ 161 static const MCPhysReg CRRegs[8] = { \ 162 PPC::CR0, PPC::CR1, PPC::CR2, PPC::CR3, \ 163 PPC::CR4, PPC::CR5, PPC::CR6, PPC::CR7} 164 165 #endif // LLVM_LIB_TARGET_POWERPC_MCTARGETDESC_PPCMCTARGETDESC_H 166