1 //===-- XCoreMCTargetDesc.cpp - XCore 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 XCore specific target descriptions.
10 //
11 //===----------------------------------------------------------------------===//
12 
13 #include "MCTargetDesc/XCoreMCTargetDesc.h"
14 #include "MCTargetDesc/XCoreInstPrinter.h"
15 #include "MCTargetDesc/XCoreMCAsmInfo.h"
16 #include "TargetInfo/XCoreTargetInfo.h"
17 #include "XCoreTargetStreamer.h"
18 #include "llvm/ADT/StringRef.h"
19 #include "llvm/MC/MCDwarf.h"
20 #include "llvm/MC/MCInstrInfo.h"
21 #include "llvm/MC/MCRegisterInfo.h"
22 #include "llvm/MC/MCSubtargetInfo.h"
23 #include "llvm/MC/TargetRegistry.h"
24 #include "llvm/Support/CodeGen.h"
25 #include "llvm/Support/ErrorHandling.h"
26 #include "llvm/Support/FormattedStream.h"
27 #include "llvm/Support/raw_ostream.h"
28 
29 using namespace llvm;
30 
31 #define GET_INSTRINFO_MC_DESC
32 #define ENABLE_INSTR_PREDICATE_VERIFIER
33 #include "XCoreGenInstrInfo.inc"
34 
35 #define GET_SUBTARGETINFO_MC_DESC
36 #include "XCoreGenSubtargetInfo.inc"
37 
38 #define GET_REGINFO_MC_DESC
39 #include "XCoreGenRegisterInfo.inc"
40 
41 static MCInstrInfo *createXCoreMCInstrInfo() {
42   MCInstrInfo *X = new MCInstrInfo();
43   InitXCoreMCInstrInfo(X);
44   return X;
45 }
46 
47 static MCRegisterInfo *createXCoreMCRegisterInfo(const Triple &TT) {
48   MCRegisterInfo *X = new MCRegisterInfo();
49   InitXCoreMCRegisterInfo(X, XCore::LR);
50   return X;
51 }
52 
53 static MCSubtargetInfo *
54 createXCoreMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
55   return createXCoreMCSubtargetInfoImpl(TT, CPU, /*TuneCPU*/ CPU, FS);
56 }
57 
58 static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
59                                        const Triple &TT,
60                                        const MCTargetOptions &Options) {
61   MCAsmInfo *MAI = new XCoreMCAsmInfo(TT);
62 
63   // Initial state of the frame pointer is SP.
64   MCCFIInstruction Inst = MCCFIInstruction::cfiDefCfa(nullptr, XCore::SP, 0);
65   MAI->addInitialFrameState(Inst);
66 
67   return MAI;
68 }
69 
70 static MCInstPrinter *createXCoreMCInstPrinter(const Triple &T,
71                                                unsigned SyntaxVariant,
72                                                const MCAsmInfo &MAI,
73                                                const MCInstrInfo &MII,
74                                                const MCRegisterInfo &MRI) {
75   return new XCoreInstPrinter(MAI, MII, MRI);
76 }
77 
78 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
79 
80 XCoreTargetStreamer::~XCoreTargetStreamer() = default;
81 
82 namespace {
83 
84 class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
85   formatted_raw_ostream &OS;
86 
87 public:
88   XCoreTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
89 
90   void emitCCTopData(StringRef Name) override;
91   void emitCCTopFunction(StringRef Name) override;
92   void emitCCBottomData(StringRef Name) override;
93   void emitCCBottomFunction(StringRef Name) override;
94 };
95 
96 } // end anonymous namespace
97 
98 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
99                                                formatted_raw_ostream &OS)
100     : XCoreTargetStreamer(S), OS(OS) {}
101 
102 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
103   OS << "\t.cc_top " << Name << ".data," << Name << '\n';
104 }
105 
106 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
107   OS << "\t.cc_top " << Name << ".function," << Name << '\n';
108 }
109 
110 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
111   OS << "\t.cc_bottom " << Name << ".data\n";
112 }
113 
114 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
115   OS << "\t.cc_bottom " << Name << ".function\n";
116 }
117 
118 static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
119                                                  formatted_raw_ostream &OS,
120                                                  MCInstPrinter *InstPrint,
121                                                  bool isVerboseAsm) {
122   return new XCoreTargetAsmStreamer(S, OS);
123 }
124 
125 static MCTargetStreamer *createNullTargetStreamer(MCStreamer &S) {
126   return new XCoreTargetStreamer(S);
127 }
128 
129 // Force static initialization.
130 extern "C" LLVM_EXTERNAL_VISIBILITY void LLVMInitializeXCoreTargetMC() {
131   // Register the MC asm info.
132   RegisterMCAsmInfoFn X(getTheXCoreTarget(), createXCoreMCAsmInfo);
133 
134   // Register the MC instruction info.
135   TargetRegistry::RegisterMCInstrInfo(getTheXCoreTarget(),
136                                       createXCoreMCInstrInfo);
137 
138   // Register the MC register info.
139   TargetRegistry::RegisterMCRegInfo(getTheXCoreTarget(),
140                                     createXCoreMCRegisterInfo);
141 
142   // Register the MC subtarget info.
143   TargetRegistry::RegisterMCSubtargetInfo(getTheXCoreTarget(),
144                                           createXCoreMCSubtargetInfo);
145 
146   // Register the MCInstPrinter
147   TargetRegistry::RegisterMCInstPrinter(getTheXCoreTarget(),
148                                         createXCoreMCInstPrinter);
149 
150   TargetRegistry::RegisterAsmTargetStreamer(getTheXCoreTarget(),
151                                             createTargetAsmStreamer);
152 
153   TargetRegistry::RegisterNullTargetStreamer(getTheXCoreTarget(),
154                                              createNullTargetStreamer);
155 }
156