llvm/lib/MC/MCParser/XCOFFAsmParser.cpp

   1 //===- XCOFFAsmParser.cpp - XCOFF Assembly Parser
   2 //-----------------------------===//
   3 //
   4 // Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
   5 // See https://llvm.org/LICENSE.txt for license information.
   6 // SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #include "llvm/BinaryFormat/XCOFF.h"
  11 #include "llvm/MC/MCParser/MCAsmParser.h"
  12 #include "llvm/MC/MCParser/MCAsmParserExtension.h"
  13
  14 using namespace llvm;
  15
  16 namespace {
  17
  18 class XCOFFAsmParser : public MCAsmParserExtension {
  19   MCAsmParser *Parser = nullptr;
  20   MCAsmLexer *Lexer = nullptr;
  21
  22   template <bool (XCOFFAsmParser::*HandlerMethod)(StringRef, SMLoc)>
  23   void addDirectiveHandler(StringRef Directive) {
  24     MCAsmParser::ExtensionDirectiveHandler Handler =
  25         std::make_pair(this, HandleDirective<XCOFFAsmParser, HandlerMethod>);
  26
  27     getParser().addDirectiveHandler(Directive, Handler);
  28   }
  29
  30 public:
  31   XCOFFAsmParser() = default;
  32
  33   void Initialize(MCAsmParser &P) override {
  34     Parser = &P;
  35     Lexer = &Parser->getLexer();
  36     // Call the base implementation.
  37     MCAsmParserExtension::Initialize(*Parser);
  38
  39     addDirectiveHandler<&XCOFFAsmParser::ParseDirectiveCSect>(".csect");
  40   }
  41   bool ParseDirectiveCSect(StringRef, SMLoc);
  42 };
  43
  44 } // end anonymous namespace
  45
  46 namespace llvm {
  47
  48 MCAsmParserExtension *createXCOFFAsmParser() { return new XCOFFAsmParser; }
  49
  50 } // end namespace llvm
  51
  52 // .csect QualName [, Number ]
  53 bool XCOFFAsmParser::ParseDirectiveCSect(StringRef, SMLoc) {
  54   report_fatal_error("XCOFFAsmParser directive not yet supported!");
  55   return false;
  56 }