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143 lines
4.4 KiB
C++
143 lines
4.4 KiB
C++
//===- AsmParser.h - Parser for Assembly Files ------------------*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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//
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// This class declares the parser for assembly files.
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//
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//===----------------------------------------------------------------------===//
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#ifndef ASMPARSER_H
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#define ASMPARSER_H
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#include <vector>
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#include "AsmLexer.h"
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#include "AsmCond.h"
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#include "llvm/MC/MCAsmParser.h"
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#include "llvm/MC/MCStreamer.h"
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namespace llvm {
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class AsmExpr;
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class AsmCond;
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class MCContext;
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class MCInst;
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class MCStreamer;
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class MCValue;
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class TargetAsmParser;
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class Twine;
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class AsmParser : public MCAsmParser {
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private:
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AsmLexer Lexer;
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MCContext &Ctx;
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MCStreamer &Out;
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TargetAsmParser *TargetParser;
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AsmCond TheCondState;
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std::vector<AsmCond> TheCondStack;
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public:
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AsmParser(SourceMgr &_SM, MCContext &_Ctx, MCStreamer &_Out)
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: Lexer(_SM), Ctx(_Ctx), Out(_Out), TargetParser(0) {}
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~AsmParser() {}
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bool Run();
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public:
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TargetAsmParser &getTargetParser() const { return *TargetParser; }
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void setTargetParser(TargetAsmParser &P) { TargetParser = &P; }
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/// @name MCAsmParser Interface
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/// {
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virtual MCAsmLexer &getLexer() { return Lexer; }
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virtual void Warning(SMLoc L, const Twine &Meg);
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virtual bool Error(SMLoc L, const Twine &Msg);
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virtual bool ParseExpression(AsmExpr *&Res);
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virtual bool ParseAbsoluteExpression(int64_t &Res);
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virtual bool ParseRelocatableExpression(MCValue &Res);
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/// }
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private:
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bool ParseStatement();
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bool TokError(const char *Msg);
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bool ParseConditionalAssemblyDirectives(StringRef Directive,
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SMLoc DirectiveLoc);
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void EatToEndOfStatement();
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bool ParseAssignment(const StringRef &Name, bool IsDotSet);
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/// ParseParenRelocatableExpression - Parse an expression which must be
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/// relocatable, assuming that an initial '(' has already been consumed.
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///
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/// @param Res - The relocatable expression value. The result is undefined on
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/// error.
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/// @result - False on success.
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///
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/// @see ParseRelocatableExpression, ParseParenExpr.
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bool ParseParenRelocatableExpression(MCValue &Res);
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bool ParsePrimaryExpr(AsmExpr *&Res);
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bool ParseBinOpRHS(unsigned Precedence, AsmExpr *&Res);
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bool ParseParenExpr(AsmExpr *&Res);
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/// ParseIdentifier - Parse an identifier or string (as a quoted identifier)
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/// and set \arg Res to the identifier contents.
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bool ParseIdentifier(StringRef &Res);
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// Directive Parsing.
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bool ParseDirectiveDarwinSection(); // Darwin specific ".section".
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bool ParseDirectiveSectionSwitch(const char *Segment, const char *Section,
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unsigned TAA, unsigned StubSize = 0);
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bool ParseDirectiveAscii(bool ZeroTerminated); // ".ascii", ".asciiz"
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bool ParseDirectiveValue(unsigned Size); // ".byte", ".long", ...
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bool ParseDirectiveFill(); // ".fill"
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bool ParseDirectiveSpace(); // ".space"
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bool ParseDirectiveSet(); // ".set"
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bool ParseDirectiveOrg(); // ".org"
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// ".align{,32}", ".p2align{,w,l}"
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bool ParseDirectiveAlign(bool IsPow2, unsigned ValueSize);
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/// ParseDirectiveSymbolAttribute - Parse a directive like ".globl" which
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/// accepts a single symbol (which should be a label or an external).
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bool ParseDirectiveSymbolAttribute(MCStreamer::SymbolAttr Attr);
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bool ParseDirectiveDarwinSymbolDesc(); // Darwin specific ".desc"
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bool ParseDirectiveDarwinLsym(); // Darwin specific ".lsym"
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bool ParseDirectiveComm(bool IsLocal); // ".comm" and ".lcomm"
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bool ParseDirectiveDarwinZerofill(); // Darwin specific ".zerofill"
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// Darwin specific ".subsections_via_symbols"
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bool ParseDirectiveDarwinSubsectionsViaSymbols();
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// Darwin specific .dump and .load
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bool ParseDirectiveDarwinDumpOrLoad(SMLoc IDLoc, bool IsDump);
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bool ParseDirectiveAbort(); // ".abort"
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bool ParseDirectiveInclude(); // ".include"
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bool ParseDirectiveIf(SMLoc DirectiveLoc); // ".if"
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bool ParseDirectiveElseIf(SMLoc DirectiveLoc); // ".elseif"
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bool ParseDirectiveElse(SMLoc DirectiveLoc); // ".else"
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bool ParseDirectiveEndIf(SMLoc DirectiveLoc); // .endif
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bool ParseDirectiveFile(SMLoc DirectiveLoc); // ".file"
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bool ParseDirectiveLine(SMLoc DirectiveLoc); // ".line"
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bool ParseDirectiveLoc(SMLoc DirectiveLoc); // ".loc"
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};
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} // end namespace llvm
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#endif
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