Add MCAsmParser interface.

 - This provides the AsmParser interface to the target specific assembly
   parsers.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@76453 91177308-0d34-0410-b5e6-96231b3b80d8

2 files changed, 50 insertions, 0 deletions

diff --git a/include/llvm/MC/MCAsmParser.h b/include/llvm/MC/MCAsmParser.h
new file mode 100644
index 0000000..2379f21
--- /dev/null
+++ b/include/llvm/MC/MCAsmParser.h
@@ -0,0 +1,33 @@
+//===-- llvm/MC/MCAsmParser.h - Abstract Asm Parser Interface ---*- C++ -*-===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#ifndef LLVM_MC_MCASMPARSER_H
+#define LLVM_MC_MCASMPARSER_H
+
+namespace llvm {
+class MCAsmParser;
+class MCInst;
+class Target;
+class TargetAsmParser;
+
+/// MCAsmParser - Generic assembler parser interface, for use by target specific
+/// assembly parsers.
+class MCAsmParser {
+  MCAsmParser(const MCAsmParser &);   // DO NOT IMPLEMENT
+  void operator=(const MCAsmParser &);  // DO NOT IMPLEMENT
+protected: // Can only create subclasses.
+  MCAsmParser();
+ 
+public:
+  virtual ~MCAsmParser();
+};
+
+} // End llvm namespace
+
+#endif
diff --git a/include/llvm/Target/TargetAsmParser.h b/include/llvm/Target/TargetAsmParser.h
index bf96bf7..c179991 100644
--- a/include/llvm/Target/TargetAsmParser.h
+++ b/include/llvm/Target/TargetAsmParser.h
@@ -11,6 +11,8 @@
 #define LLVM_TARGET_TARGETPARSER_H
 
 namespace llvm {
+class MCAsmParser;
+class MCInst;
 class Target;
 
 /// TargetAsmParser - Generic interface to target specific assembly parsers.
@@ -27,6 +29,21 @@ public:
   virtual ~TargetAsmParser();
 
   const Target &getTarget() const { return TheTarget; }
+
+  /// ParseInstruction - Parse one assembly instruction.
+  ///
+  /// The parser is positioned following the instruction name. The target
+  /// specific instruction parser should parse the entire instruction and
+  /// construct the appropriate MCInst, or emit an error. On success, the entire
+  /// line should be parsed up to and including the end-of-statement token. On
+  /// failure, the parser is not required to read to the end of the line.
+  //
+  /// \param AP - The current parser object.
+  /// \param Name - The instruction name.
+  /// \param Inst [out] - On success, the parsed instruction.
+  /// \return True on failure.
+  virtual bool ParseInstruction(MCAsmParser &AP, const char *Name, 
+                                MCInst &Inst) = 0;
 };
 
 } // End llvm namespace