1 //===-- MBlazeAsmLexer.cpp - Tokenize MBlaze assembly to AsmTokens --------===//
3 // The LLVM Compiler Infrastructure
5 // This file is distributed under the University of Illinois Open Source
6 // License. See LICENSE.TXT for details.
8 //===----------------------------------------------------------------------===//
10 #include "MCTargetDesc/MBlazeBaseInfo.h"
12 #include "llvm/MC/MCAsmInfo.h"
13 #include "llvm/MC/MCParser/MCAsmLexer.h"
14 #include "llvm/MC/MCParser/MCParsedAsmOperand.h"
15 #include "llvm/MC/MCRegisterInfo.h"
16 #include "llvm/MC/MCTargetAsmLexer.h"
18 #include "llvm/Support/TargetRegistry.h"
27 class MBlazeBaseAsmLexer : public MCTargetAsmLexer {
28 const MCAsmInfo &AsmInfo;
30 const AsmToken &lexDefinite() {
31 return getLexer()->Lex();
34 AsmToken LexTokenUAL();
36 typedef std::map <std::string, unsigned> rmap_ty;
40 void InitRegisterMap(const MCRegisterInfo *info) {
41 unsigned numRegs = info->getNumRegs();
43 for (unsigned i = 0; i < numRegs; ++i) {
44 const char *regName = info->getName(i);
46 RegisterMap[regName] = i;
50 unsigned MatchRegisterName(StringRef Name) {
51 rmap_ty::iterator iter = RegisterMap.find(Name.str());
52 if (iter != RegisterMap.end())
60 SetError(SMLoc(), "No MCAsmLexer installed");
61 return AsmToken(AsmToken::Error, "", 0);
64 switch (AsmInfo.getAssemblerDialect()) {
66 SetError(SMLoc(), "Unhandled dialect");
67 return AsmToken(AsmToken::Error, "", 0);
73 MBlazeBaseAsmLexer(const Target &T, const MCAsmInfo &MAI)
74 : MCTargetAsmLexer(T), AsmInfo(MAI) {
78 class MBlazeAsmLexer : public MBlazeBaseAsmLexer {
80 MBlazeAsmLexer(const Target &T, const MCRegisterInfo &MRI,
82 : MBlazeBaseAsmLexer(T, MAI) {
83 InitRegisterMap(&MRI);
88 AsmToken MBlazeBaseAsmLexer::LexTokenUAL() {
89 const AsmToken &lexedToken = lexDefinite();
91 switch (lexedToken.getKind()) {
93 return AsmToken(lexedToken);
95 SetError(Lexer->getErrLoc(), Lexer->getErr());
96 return AsmToken(lexedToken);
97 case AsmToken::Identifier:
99 unsigned regID = MatchRegisterName(lexedToken.getString().lower());
102 return AsmToken(AsmToken::Register,
103 lexedToken.getString(),
104 static_cast<int64_t>(regID));
106 return AsmToken(lexedToken);
112 extern "C" void LLVMInitializeMBlazeAsmLexer() {
113 RegisterMCAsmLexer<MBlazeAsmLexer> X(TheMBlazeTarget);