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//===-- BPFRegisterInfo.td - BPF Register defs -------------*- tablegen -*-===//
//
// The LLVM Compiler Infrastructure
//
// This file is distributed under the University of Illinois Open Source
// License. See LICENSE.TXT for details.
//
//===----------------------------------------------------------------------===//
//===----------------------------------------------------------------------===//
// Declarations that describe the BPF register file
//===----------------------------------------------------------------------===//
// Registers are identified with 4-bit ID numbers.
// Ri - 64-bit integer registers
class Ri<bits<16> Enc, string n> : Register<n> {
let Namespace = "BPF";
let HWEncoding = Enc;
}
// Integer registers
def R0 : Ri< 0, "r0">, DwarfRegNum<[0]>;
def R1 : Ri< 1, "r1">, DwarfRegNum<[1]>;
def R2 : Ri< 2, "r2">, DwarfRegNum<[2]>;
def R3 : Ri< 3, "r3">, DwarfRegNum<[3]>;
def R4 : Ri< 4, "r4">, DwarfRegNum<[4]>;
def R5 : Ri< 5, "r5">, DwarfRegNum<[5]>;
def R6 : Ri< 6, "r6">, DwarfRegNum<[6]>;
def R7 : Ri< 7, "r7">, DwarfRegNum<[7]>;
def R8 : Ri< 8, "r8">, DwarfRegNum<[8]>;
def R9 : Ri< 9, "r9">, DwarfRegNum<[9]>;
def R10 : Ri<10, "r10">, DwarfRegNum<[10]>;
def R11 : Ri<11, "r11">, DwarfRegNum<[11]>;
// Register classes.
def GPR : RegisterClass<"BPF", [i64], 64, (add R1, R2, R3, R4, R5,
R6, R7, R8, R9, // callee saved
R0, // return value
R11, // stack ptr
R10 // frame ptr
)>;
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