From e88f55254cde9d9443f1299b61aa6a93ec50b791 Mon Sep 17 00:00:00 2001
From: Sean Callanan <scallanan@apple.com>
Date: Sat, 23 Jan 2010 02:43:15 +0000
Subject: [PATCH] Added the skeleton for the implementation of the X86
 target-specific AsmLexer, and added the appropriate registration calls.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@94275 91177308-0d34-0410-b5e6-96231b3b80d8
---
 lib/Target/X86/AsmParser/X86AsmLexer.cpp  | 43 +++++++++++++++++++++++
 lib/Target/X86/AsmParser/X86AsmParser.cpp |  3 ++
 2 files changed, 46 insertions(+)
 create mode 100644 lib/Target/X86/AsmParser/X86AsmLexer.cpp

diff --git a/lib/Target/X86/AsmParser/X86AsmLexer.cpp b/lib/Target/X86/AsmParser/X86AsmLexer.cpp
new file mode 100644
index 00000000000..1a62044a60e
--- /dev/null
+++ b/lib/Target/X86/AsmParser/X86AsmLexer.cpp
@@ -0,0 +1,43 @@
+//===-- X86AsmLexer.cpp - Tokenize X86 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 "llvm/Target/TargetAsmLexer.h"
+#include "llvm/Target/TargetRegistry.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+#include "llvm/MC/MCParser/MCParsedAsmOperand.h"
+#include "X86.h"
+
+using namespace llvm;
+
+namespace {
+  
+class X86AsmLexer : public TargetAsmLexer {
+  const MCAsmInfo &AsmInfo;
+protected:
+  AsmToken LexToken();
+public:
+  X86AsmLexer(const Target &T, const MCAsmInfo &MAI)
+    : TargetAsmLexer(T), AsmInfo(MAI) {
+  }
+};
+
+}
+
+AsmToken X86AsmLexer::LexToken() {
+  return AsmToken(AsmToken::Error, "", 0);
+}
+
+extern "C" void LLVMInitializeX86AsmLexer() {
+  RegisterAsmLexer<X86AsmLexer> X(TheX86_32Target);
+  RegisterAsmLexer<X86AsmLexer> Y(TheX86_64Target);
+}
+
+//#define REGISTERS_ONLY
+//#include "../X86GenAsmMatcher.inc"
+//#undef REGISTERS_ONLY
diff --git a/lib/Target/X86/AsmParser/X86AsmParser.cpp b/lib/Target/X86/AsmParser/X86AsmParser.cpp
index a367189028f..7a9218e743c 100644
--- a/lib/Target/X86/AsmParser/X86AsmParser.cpp
+++ b/lib/Target/X86/AsmParser/X86AsmParser.cpp
@@ -488,10 +488,13 @@ bool X86ATTAsmParser::ParseDirectiveWord(unsigned Size, SMLoc L) {
   return false;
 }
 
+extern "C" void LLVMInitializeX86AsmLexer();
+
 // Force static initialization.
 extern "C" void LLVMInitializeX86AsmParser() {
   RegisterAsmParser<X86ATTAsmParser> X(TheX86_32Target);
   RegisterAsmParser<X86ATTAsmParser> Y(TheX86_64Target);
+  LLVMInitializeX86AsmLexer();
 }
 
 #include "X86GenAsmMatcher.inc"