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