1 //===-- BPFRegisterInfo.td - BPF Register defs -------------*- tablegen -*-===// 2 // 3 // The LLVM Compiler Infrastructure 4 // 5 // This file is distributed under the University of Illinois Open Source 6 // License. See LICENSE.TXT for details. 7 // 8 //===----------------------------------------------------------------------===// 9 10 //===----------------------------------------------------------------------===// 11 // Declarations that describe the BPF register file 12 //===----------------------------------------------------------------------===// 13 14 // Registers are identified with 4-bit ID numbers. 15 // Ri - 64-bit integer registers 16 class Ri<bits<16> Enc, string n> : Register<n> { 17 let Namespace = "BPF"; 18 let HWEncoding = Enc; 19 } 20 21 // Integer registers 22 def R0 : Ri< 0, "r0">, DwarfRegNum<[0]>; 23 def R1 : Ri< 1, "r1">, DwarfRegNum<[1]>; 24 def R2 : Ri< 2, "r2">, DwarfRegNum<[2]>; 25 def R3 : Ri< 3, "r3">, DwarfRegNum<[3]>; 26 def R4 : Ri< 4, "r4">, DwarfRegNum<[4]>; 27 def R5 : Ri< 5, "r5">, DwarfRegNum<[5]>; 28 def R6 : Ri< 6, "r6">, DwarfRegNum<[6]>; 29 def R7 : Ri< 7, "r7">, DwarfRegNum<[7]>; 30 def R8 : Ri< 8, "r8">, DwarfRegNum<[8]>; 31 def R9 : Ri< 9, "r9">, DwarfRegNum<[9]>; 32 def R10 : Ri<10, "r10">, DwarfRegNum<[10]>; 33 def R11 : Ri<11, "r11">, DwarfRegNum<[11]>; 34 35 // Register classes. 36 def GPR : RegisterClass<"BPF", [i64], 64, (add R1, R2, R3, R4, R5, 37 R6, R7, R8, R9, // callee saved 38 R0, // return value 39 R11, // stack ptr 40 R10 // frame ptr 41 )>; 42
