1 //===-- MSP430MCTargetDesc.cpp - MSP430 Target Descriptions ---------------===//
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 MSP430 specific target descriptions.
10 //
11 //===----------------------------------------------------------------------===//
12
13 #include "MSP430MCTargetDesc.h"
14 #include "MSP430InstPrinter.h"
15 #include "MSP430MCAsmInfo.h"
16 #include "TargetInfo/MSP430TargetInfo.h"
17 #include "llvm/MC/MCDwarf.h"
18 #include "llvm/MC/MCInstrInfo.h"
19 #include "llvm/MC/MCRegisterInfo.h"
20 #include "llvm/MC/MCSubtargetInfo.h"
21 #include "llvm/MC/TargetRegistry.h"
22
23 using namespace llvm;
24
25 #define GET_INSTRINFO_MC_DESC
26 #define ENABLE_INSTR_PREDICATE_VERIFIER
27 #include "MSP430GenInstrInfo.inc"
28
29 #define GET_SUBTARGETINFO_MC_DESC
30 #include "MSP430GenSubtargetInfo.inc"
31
32 #define GET_REGINFO_MC_DESC
33 #include "MSP430GenRegisterInfo.inc"
34
createMSP430MCInstrInfo()35 static MCInstrInfo *createMSP430MCInstrInfo() {
36 MCInstrInfo *X = new MCInstrInfo();
37 InitMSP430MCInstrInfo(X);
38 return X;
39 }
40
createMSP430MCRegisterInfo(const Triple & TT)41 static MCRegisterInfo *createMSP430MCRegisterInfo(const Triple &TT) {
42 MCRegisterInfo *X = new MCRegisterInfo();
43 InitMSP430MCRegisterInfo(X, MSP430::PC);
44 return X;
45 }
46
createMSP430MCAsmInfo(const MCRegisterInfo & MRI,const Triple & TT,const MCTargetOptions & Options)47 static MCAsmInfo *createMSP430MCAsmInfo(const MCRegisterInfo &MRI,
48 const Triple &TT,
49 const MCTargetOptions &Options) {
50 MCAsmInfo *MAI = new MSP430MCAsmInfo(TT);
51
52 // Initialize initial frame state.
53 int stackGrowth = -2;
54
55 // Initial state of the frame pointer is sp+ptr_size.
56 MCCFIInstruction Inst = MCCFIInstruction::cfiDefCfa(
57 nullptr, MRI.getDwarfRegNum(MSP430::SP, true), -stackGrowth);
58 MAI->addInitialFrameState(Inst);
59
60 // Add return address to move list
61 MCCFIInstruction Inst2 = MCCFIInstruction::createOffset(
62 nullptr, MRI.getDwarfRegNum(MSP430::PC, true), stackGrowth);
63 MAI->addInitialFrameState(Inst2);
64
65 return MAI;
66 }
67
68 static MCSubtargetInfo *
createMSP430MCSubtargetInfo(const Triple & TT,StringRef CPU,StringRef FS)69 createMSP430MCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
70 return createMSP430MCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
71 }
72
createMSP430MCInstPrinter(const Triple & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI)73 static MCInstPrinter *createMSP430MCInstPrinter(const Triple &T,
74 unsigned SyntaxVariant,
75 const MCAsmInfo &MAI,
76 const MCInstrInfo &MII,
77 const MCRegisterInfo &MRI) {
78 if (SyntaxVariant == 0)
79 return new MSP430InstPrinter(MAI, MII, MRI);
80 return nullptr;
81 }
82
LLVMInitializeMSP430TargetMC()83 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeMSP430TargetMC() {
84 Target &T = getTheMSP430Target();
85
86 TargetRegistry::RegisterMCAsmInfo(T, createMSP430MCAsmInfo);
87 TargetRegistry::RegisterMCInstrInfo(T, createMSP430MCInstrInfo);
88 TargetRegistry::RegisterMCRegInfo(T, createMSP430MCRegisterInfo);
89 TargetRegistry::RegisterMCSubtargetInfo(T, createMSP430MCSubtargetInfo);
90 TargetRegistry::RegisterMCInstPrinter(T, createMSP430MCInstPrinter);
91 TargetRegistry::RegisterMCCodeEmitter(T, createMSP430MCCodeEmitter);
92 TargetRegistry::RegisterMCAsmBackend(T, createMSP430MCAsmBackend);
93 TargetRegistry::RegisterObjectTargetStreamer(
94 T, createMSP430ObjectTargetStreamer);
95 }
96