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/MCInstrInfo.h"
19 #include "llvm/MC/MCRegisterInfo.h"
20 #include "llvm/MC/MCSubtargetInfo.h"
21 #include "llvm/Support/ErrorHandling.h"
22 #include "llvm/Support/FormattedStream.h"
23 #include "llvm/Support/TargetRegistry.h"
24
25 using namespace llvm;
26
27 #define GET_INSTRINFO_MC_DESC
28 #include "XCoreGenInstrInfo.inc"
29
30 #define GET_SUBTARGETINFO_MC_DESC
31 #include "XCoreGenSubtargetInfo.inc"
32
33 #define GET_REGINFO_MC_DESC
34 #include "XCoreGenRegisterInfo.inc"
35
createXCoreMCInstrInfo()36 static MCInstrInfo *createXCoreMCInstrInfo() {
37 MCInstrInfo *X = new MCInstrInfo();
38 InitXCoreMCInstrInfo(X);
39 return X;
40 }
41
createXCoreMCRegisterInfo(const Triple & TT)42 static MCRegisterInfo *createXCoreMCRegisterInfo(const Triple &TT) {
43 MCRegisterInfo *X = new MCRegisterInfo();
44 InitXCoreMCRegisterInfo(X, XCore::LR);
45 return X;
46 }
47
48 static MCSubtargetInfo *
createXCoreMCSubtargetInfo(const Triple & TT,StringRef CPU,StringRef FS)49 createXCoreMCSubtargetInfo(const Triple &TT, StringRef CPU, StringRef FS) {
50 return createXCoreMCSubtargetInfoImpl(TT, CPU, FS);
51 }
52
createXCoreMCAsmInfo(const MCRegisterInfo & MRI,const Triple & TT)53 static MCAsmInfo *createXCoreMCAsmInfo(const MCRegisterInfo &MRI,
54 const Triple &TT) {
55 MCAsmInfo *MAI = new XCoreMCAsmInfo(TT);
56
57 // Initial state of the frame pointer is SP.
58 MCCFIInstruction Inst = MCCFIInstruction::createDefCfa(nullptr, XCore::SP, 0);
59 MAI->addInitialFrameState(Inst);
60
61 return MAI;
62 }
63
adjustCodeGenOpts(const Triple & TT,Reloc::Model RM,CodeModel::Model & CM)64 static void adjustCodeGenOpts(const Triple &TT, Reloc::Model RM,
65 CodeModel::Model &CM) {
66 if (CM == CodeModel::Default) {
67 CM = CodeModel::Small;
68 }
69 if (CM != CodeModel::Small && CM != CodeModel::Large)
70 report_fatal_error("Target only supports CodeModel Small or Large");
71 }
72
createXCoreMCInstPrinter(const Triple & T,unsigned SyntaxVariant,const MCAsmInfo & MAI,const MCInstrInfo & MII,const MCRegisterInfo & MRI)73 static MCInstPrinter *createXCoreMCInstPrinter(const Triple &T,
74 unsigned SyntaxVariant,
75 const MCAsmInfo &MAI,
76 const MCInstrInfo &MII,
77 const MCRegisterInfo &MRI) {
78 return new XCoreInstPrinter(MAI, MII, MRI);
79 }
80
XCoreTargetStreamer(MCStreamer & S)81 XCoreTargetStreamer::XCoreTargetStreamer(MCStreamer &S) : MCTargetStreamer(S) {}
~XCoreTargetStreamer()82 XCoreTargetStreamer::~XCoreTargetStreamer() {}
83
84 namespace {
85
86 class XCoreTargetAsmStreamer : public XCoreTargetStreamer {
87 formatted_raw_ostream &OS;
88 public:
89 XCoreTargetAsmStreamer(MCStreamer &S, formatted_raw_ostream &OS);
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
XCoreTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS)96 XCoreTargetAsmStreamer::XCoreTargetAsmStreamer(MCStreamer &S,
97 formatted_raw_ostream &OS)
98 : XCoreTargetStreamer(S), OS(OS) {}
99
emitCCTopData(StringRef Name)100 void XCoreTargetAsmStreamer::emitCCTopData(StringRef Name) {
101 OS << "\t.cc_top " << Name << ".data," << Name << '\n';
102 }
103
emitCCTopFunction(StringRef Name)104 void XCoreTargetAsmStreamer::emitCCTopFunction(StringRef Name) {
105 OS << "\t.cc_top " << Name << ".function," << Name << '\n';
106 }
107
emitCCBottomData(StringRef Name)108 void XCoreTargetAsmStreamer::emitCCBottomData(StringRef Name) {
109 OS << "\t.cc_bottom " << Name << ".data\n";
110 }
111
emitCCBottomFunction(StringRef Name)112 void XCoreTargetAsmStreamer::emitCCBottomFunction(StringRef Name) {
113 OS << "\t.cc_bottom " << Name << ".function\n";
114 }
115 }
116
createTargetAsmStreamer(MCStreamer & S,formatted_raw_ostream & OS,MCInstPrinter * InstPrint,bool isVerboseAsm)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.
LLVMInitializeXCoreTargetMC()125 extern "C" void LLVMInitializeXCoreTargetMC() {
126 // Register the MC asm info.
127 RegisterMCAsmInfoFn X(TheXCoreTarget, createXCoreMCAsmInfo);
128
129 // Register the MC codegen info.
130 TargetRegistry::registerMCAdjustCodeGenOpts(TheXCoreTarget,
131 adjustCodeGenOpts);
132
133 // Register the MC instruction info.
134 TargetRegistry::RegisterMCInstrInfo(TheXCoreTarget, createXCoreMCInstrInfo);
135
136 // Register the MC register info.
137 TargetRegistry::RegisterMCRegInfo(TheXCoreTarget, createXCoreMCRegisterInfo);
138
139 // Register the MC subtarget info.
140 TargetRegistry::RegisterMCSubtargetInfo(TheXCoreTarget,
141 createXCoreMCSubtargetInfo);
142
143 // Register the MCInstPrinter
144 TargetRegistry::RegisterMCInstPrinter(TheXCoreTarget,
145 createXCoreMCInstPrinter);
146
147 TargetRegistry::RegisterAsmTargetStreamer(TheXCoreTarget,
148 createTargetAsmStreamer);
149 }
150