1 files changed, 115 insertions, 0 deletions
diff --git a/contrib/llvm/lib/Target/MBlaze/AsmParser/MBlazeAsmLexer.cpp b/contrib/llvm/lib/Target/MBlaze/AsmParser/MBlazeAsmLexer.cpp
new file mode 100644
index 0000000..59a1ed9
--- /dev/null
+++ b/contrib/llvm/lib/Target/MBlaze/AsmParser/MBlazeAsmLexer.cpp
@@ -0,0 +1,115 @@
+//===-- MBlazeAsmLexer.cpp - Tokenize MBlaze assembly to AsmTokens --------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "MCTargetDesc/MBlazeBaseInfo.h"
+
+#include "llvm/MC/MCAsmInfo.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "llvm/MC/MCRegisterInfo.h"
+#include "llvm/MC/MCTargetAsmLexer.h"
+
+#include "llvm/Support/TargetRegistry.h"
+
+#include <string>
+#include <map>
+
+using namespace llvm;
+
+namespace {
+  
+  class MBlazeBaseAsmLexer : public MCTargetAsmLexer {
+    const MCAsmInfo &AsmInfo;
+    
+    const AsmToken &lexDefinite() {
+      return getLexer()->Lex();
+    }
+    
+    AsmToken LexTokenUAL();
+  protected:
+    typedef std::map <std::string, unsigned> rmap_ty;
+    
+    rmap_ty RegisterMap;
+    
+    void InitRegisterMap(const MCRegisterInfo *info) {
+      unsigned numRegs = info->getNumRegs();
+
+      for (unsigned i = 0; i < numRegs; ++i) {
+        const char *regName = info->getName(i);
+        if (regName)
+          RegisterMap[regName] = i;
+      }
+    }
+    
+    unsigned MatchRegisterName(StringRef Name) {
+      rmap_ty::iterator iter = RegisterMap.find(Name.str());
+      if (iter != RegisterMap.end())
+        return iter->second;
+      else
+        return 0;
+    }
+    
+    AsmToken LexToken() {
+      if (!Lexer) {
+        SetError(SMLoc(), "No MCAsmLexer installed");
+        return AsmToken(AsmToken::Error, "", 0);
+      }
+      
+      switch (AsmInfo.getAssemblerDialect()) {
+      default:
+        SetError(SMLoc(), "Unhandled dialect");
+        return AsmToken(AsmToken::Error, "", 0);
+      case 0:
+        return LexTokenUAL();
+      }
+    }
+  public:
+    MBlazeBaseAsmLexer(const Target &T, const MCAsmInfo &MAI)
+      : MCTargetAsmLexer(T), AsmInfo(MAI) {
+    }
+  };
+  
+  class MBlazeAsmLexer : public MBlazeBaseAsmLexer {
+  public:
+    MBlazeAsmLexer(const Target &T, const MCRegisterInfo &MRI,
+                   const MCAsmInfo &MAI)
+      : MBlazeBaseAsmLexer(T, MAI) {
+      InitRegisterMap(&MRI);
+    }
+  };
+}
+
+AsmToken MBlazeBaseAsmLexer::LexTokenUAL() {
+  const AsmToken &lexedToken = lexDefinite();
+  
+  switch (lexedToken.getKind()) {
+  default:
+    return AsmToken(lexedToken);
+  case AsmToken::Error:
+    SetError(Lexer->getErrLoc(), Lexer->getErr());
+    return AsmToken(lexedToken);
+  case AsmToken::Identifier:
+  {
+    unsigned regID = MatchRegisterName(lexedToken.getString().lower());
+    
+    if (regID) {
+      return AsmToken(AsmToken::Register,
+                      lexedToken.getString(),
+                      static_cast<int64_t>(regID));
+    } else {
+      return AsmToken(lexedToken);
+    }
+  }
+  }
+}
+
+extern "C" void LLVMInitializeMBlazeAsmLexer() {
+  RegisterMCAsmLexer<MBlazeAsmLexer> X(TheMBlazeTarget);
+}
+