1//===-- MSP430RegisterInfo.td - MSP430 Register defs -------*- tablegen -*-===// 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//===----------------------------------------------------------------------===// 10// Declarations that describe the MSP430 register file 11//===----------------------------------------------------------------------===// 12 13class MSP430Reg<bits<4> num, string n, list<string> alt = []> : Register<n> { 14 field bits<4> Num = num; 15 let Namespace = "MSP430"; 16 let HWEncoding{3-0} = num; 17 let AltNames = alt; 18} 19 20class MSP430RegWithSubregs<bits<4> num, string n, list<Register> subregs, 21 list<string> alt = []> 22 : RegisterWithSubRegs<n, subregs> { 23 field bits<4> Num = num; 24 let Namespace = "MSP430"; 25 let HWEncoding{3-0} = num; 26 let AltNames = alt; 27} 28 29//===----------------------------------------------------------------------===// 30// Registers 31//===----------------------------------------------------------------------===// 32 33def PCB : MSP430Reg<0, "r0", ["pc"]>; 34def SPB : MSP430Reg<1, "r1", ["sp"]>; 35def SRB : MSP430Reg<2, "r2", ["sr"]>; 36def CGB : MSP430Reg<3, "r3", ["cg"]>; 37def FPB : MSP430Reg<4, "r4", ["fp"]>; 38def R5B : MSP430Reg<5, "r5">; 39def R6B : MSP430Reg<6, "r6">; 40def R7B : MSP430Reg<7, "r7">; 41def R8B : MSP430Reg<8, "r8">; 42def R9B : MSP430Reg<9, "r9">; 43def R10B : MSP430Reg<10, "r10">; 44def R11B : MSP430Reg<11, "r11">; 45def R12B : MSP430Reg<12, "r12">; 46def R13B : MSP430Reg<13, "r13">; 47def R14B : MSP430Reg<14, "r14">; 48def R15B : MSP430Reg<15, "r15">; 49 50def subreg_8bit : SubRegIndex<8> { let Namespace = "MSP430"; } 51 52let SubRegIndices = [subreg_8bit] in { 53def PC : MSP430RegWithSubregs<0, "r0", [PCB], ["pc"]>; 54def SP : MSP430RegWithSubregs<1, "r1", [SPB], ["sp"]>; 55def SR : MSP430RegWithSubregs<2, "r2", [SRB], ["sr"]>; 56def CG : MSP430RegWithSubregs<3, "r3", [CGB], ["cg"]>; 57def FP : MSP430RegWithSubregs<4, "r4", [FPB], ["fp"]>; 58def R5 : MSP430RegWithSubregs<5, "r5", [R5B]>; 59def R6 : MSP430RegWithSubregs<6, "r6", [R6B]>; 60def R7 : MSP430RegWithSubregs<7, "r7", [R7B]>; 61def R8 : MSP430RegWithSubregs<8, "r8", [R8B]>; 62def R9 : MSP430RegWithSubregs<9, "r9", [R9B]>; 63def R10 : MSP430RegWithSubregs<10, "r10", [R10B]>; 64def R11 : MSP430RegWithSubregs<11, "r11", [R11B]>; 65def R12 : MSP430RegWithSubregs<12, "r12", [R12B]>; 66def R13 : MSP430RegWithSubregs<13, "r13", [R13B]>; 67def R14 : MSP430RegWithSubregs<14, "r14", [R14B]>; 68def R15 : MSP430RegWithSubregs<15, "r15", [R15B]>; 69} 70 71def GR8 : RegisterClass<"MSP430", [i8], 8, 72 // Volatile registers 73 (add R12B, R13B, R14B, R15B, R11B, R10B, R9B, R8B, R7B, R6B, R5B, 74 // Frame pointer, sometimes allocable 75 FPB, 76 // Volatile, but not allocable 77 PCB, SPB, SRB, CGB)>; 78 79def GR16 : RegisterClass<"MSP430", [i16], 16, 80 // Volatile registers 81 (add R12, R13, R14, R15, R11, R10, R9, R8, R7, R6, R5, 82 // Frame pointer, sometimes allocable 83 FP, 84 // Volatile, but not allocable 85 PC, SP, SR, CG)>; 86