#ifndef LLVM_TARGET_TARGETPARSER_H
#define LLVM_TARGET_TARGETPARSER_H
+#include "llvm/MC/MCParser/MCAsmParserExtension.h"
+
namespace llvm {
+class MCStreamer;
+class StringRef;
class Target;
+class SMLoc;
+class AsmToken;
+class MCParsedAsmOperand;
+template <typename T> class SmallVectorImpl;
/// TargetAsmParser - Generic interface to target specific assembly parsers.
-class TargetAsmParser {
+class TargetAsmParser : public MCAsmParserExtension {
TargetAsmParser(const TargetAsmParser &); // DO NOT IMPLEMENT
void operator=(const TargetAsmParser &); // DO NOT IMPLEMENT
protected: // Can only create subclasses.
TargetAsmParser(const Target &);
- /// TheTarget - The Target that this machine was created for.
+ /// The Target that this machine was created for.
const Target &TheTarget;
+ /// The current set of available features.
+ unsigned AvailableFeatures;
+
public:
virtual ~TargetAsmParser();
const Target &getTarget() const { return TheTarget; }
+
+ unsigned getAvailableFeatures() const { return AvailableFeatures; }
+ void setAvailableFeatures(unsigned Value) { AvailableFeatures = Value; }
+
+ virtual bool ParseRegister(unsigned &RegNo, SMLoc &StartLoc, SMLoc &EndLoc) = 0;
+
+ /// 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 Name - The instruction name.
+ /// \param NameLoc - The source location of the name.
+ /// \param Operands [out] - The list of parsed operands, this returns
+ /// ownership of them to the caller.
+ /// \return True on failure.
+ virtual bool ParseInstruction(StringRef Name, SMLoc NameLoc,
+ SmallVectorImpl<MCParsedAsmOperand*> &Operands) = 0;
+
+ /// ParseDirective - Parse a target specific assembler directive
+ ///
+ /// The parser is positioned following the directive name. The target
+ /// specific directive parser should parse the entire directive doing or
+ /// recording any target specific work, or return true and do nothing if the
+ /// directive is not target specific. If the directive is specific for
+ /// the target, the entire line is parsed up to and including the
+ /// end-of-statement token and false is returned.
+ ///
+ /// \param DirectiveID - the identifier token of the directive.
+ virtual bool ParseDirective(AsmToken DirectiveID) = 0;
+
+ /// MatchAndEmitInstruction - Recognize a series of operands of a parsed
+ /// instruction as an actual MCInst and emit it to the specified MCStreamer.
+ /// This returns false on success and returns true on failure to match.
+ ///
+ /// On failure, the target parser is responsible for emitting a diagnostic
+ /// explaining the match failure.
+ virtual bool
+ MatchAndEmitInstruction(SMLoc IDLoc,
+ SmallVectorImpl<MCParsedAsmOperand*> &Operands,
+ MCStreamer &Out) = 0;
+
};
} // End llvm namespace