1 //===-- XCoreMCTargetDesc.cpp - XCore Target Descriptions -----------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 //
10 // This file provides XCore specific target descriptions.
11 //
12 //===----------------------------------------------------------------------===//
13 
14 #include "XCoreMCTargetDesc.h"
15 #include "InstPrinter/XCoreInstPrinter.h"
16 #include "XCoreMCAsmInfo.h"
17 #include "XCoreTargetStreamer.h"
18 #include "llvm/MC/MCCodeGenInfo.h"
19 #include "llvm/MC/MCInstrInfo.h"
20 #include "llvm/MC/MCRegisterInfo.h"
21 #include "llvm/MC/MCSubtargetInfo.h"
22 #include "llvm/Support/ErrorHandling.h"
23 #include "llvm/Support/FormattedStream.h"
24 #include "llvm/Support/TargetRegistry.h"
25 
26 using namespace llvm;
27 
28 #define GET_INSTRINFO_MC_DESC
29 #include "XCoreGenInstrInfo.inc"
30 
31 #define GET_SUBTARGETINFO_MC_DESC
32 #include "XCoreGenSubtargetInfo.inc"
33 
34 #define GET_REGINFO_MC_DESC
35 #include "XCoreGenRegisterInfo.inc"
36 
37 static MCInstrInfo *createXCoreMCInstrInfo() {
38   MCInstrInfo *X = new MCInstrInfo();
39   InitXCoreMCInstrInfo(X);
40   return X;
41 }
42 
43 static MCRegisterInfo *createXCoreMCRegisterInfo(const Triple &TT) {
44   MCRegisterInfo *X = new MCRegisterInfo();
45   InitXCoreMCRegisterInfo(X, XCore::LR);
46   return X;
47 }
48 
49 static MCSubtargetInfo *
50 createXCoreMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
51   MCSubtargetInfo *X = new MCSubtargetInfo();
52   InitXCoreMCSubtargetInfo(X, TT, CPU, FS);
53   return X;
54 }
55 
56 static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
57                                        const Triple &TT) {
58   MCAsmInfo *MAI = new XCoreMCAsmInfo(TT);
59 
60   // Initial state of the frame pointer is SP.
61   MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, XCore::SP, 0);
62   MAI->addInitialFrameState(Inst);
63 
64   return MAI;
65 }
66 
67 static MCCodeGenInfo *createXCoreMCCodeGenInfo(const Triple &TT,
68                                                Reloc::Model RM,
69                                                CodeModel::Model CM,
70                                                CodeGenOpt::Level OL) {
71   MCCodeGenInfo *X = new MCCodeGenInfo();
72   if (RM == Reloc::Default) {
73     RM = Reloc::Static;
74   }
75   if (CM == CodeModel::Default) {
76     CM = CodeModel::Small;
77   }
78   if (CM != CodeModel::Small && CM != CodeModel::Large)
79     report_fatal_error("Target only supports CodeModel Small or Large");
80 
81   X->initMCCodeGenInfo(RM, CM, OL);
82   return X;
83 }
84 
85 static MCInstPrinter *createXCoreMCInstPrinter(const Triple &T,
86                                                unsigned SyntaxVariant,
87                                                const MCAsmInfo &MAI,
88                                                const MCInstrInfo &MII,
89                                                const MCRegisterInfo &MRI) {
90   return new XCoreInstPrinter(MAI, MII, MRI);
91 }
92 
93 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
94 XCoreTargetStreamer::~XCoreTargetStreamer() {}
95 
96 namespace {
97 
98 class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
99   formatted_raw_ostream &OS;
100 public:
101   XCoreTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
102   void emitCCTopData(StringRef Name) override;
103   void emitCCTopFunction(StringRef Name) override;
104   void emitCCBottomData(StringRef Name) override;
105   void emitCCBottomFunction(StringRef Name) override;
106 };
107 
108 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
109                                                formatted_raw_ostream &OS)
110     : XCoreTargetStreamer(S), OS(OS) {}
111 
112 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
113   OS << "\t.cc_top " << Name << ".data," << Name << '\n';
114 }
115 
116 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
117   OS << "\t.cc_top " << Name << ".function," << Name << '\n';
118 }
119 
120 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
121   OS << "\t.cc_bottom " << Name << ".data\n";
122 }
123 
124 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
125   OS << "\t.cc_bottom " << Name << ".function\n";
126 }
127 }
128 
129 static MCTargetStreamer *createTargetAsmStreamer(MCStreamer &S,
130                                                  formatted_raw_ostream &OS,
131                                                  MCInstPrinter *InstPrint,
132                                                  bool isVerboseAsm) {
133   return new XCoreTargetAsmStreamer(S, OS);
134 }
135 
136 // Force static initialization.
137 extern "C" void LLVMInitializeXCoreTargetMC() {
138   // Register the MC asm info.
139   RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
140 
141   // Register the MC codegen info.
142   TargetRegistry::RegisterMCCodeGenInfo(TheXCoreTarget,
143                                         createXCoreMCCodeGenInfo);
144 
145   // Register the MC instruction info.
146   TargetRegistry::RegisterMCInstrInfo(TheXCoreTarget, createXCoreMCInstrInfo);
147 
148   // Register the MC register info.
149   TargetRegistry::RegisterMCRegInfo(TheXCoreTarget, createXCoreMCRegisterInfo);
150 
151   // Register the MC subtarget info.
152   TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
153                                           createXCoreMCSubtargetInfo);
154 
155   // Register the MCInstPrinter
156   TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
157                                         createXCoreMCInstPrinter);
158 
159   TargetRegistry::RegisterAsmTargetStreamer(TheXCoreTarget,
160                                             createTargetAsmStreamer);
161 }
162