MC/AsmParser: Move ELF specific parser to ELFAsmParser.cpp.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@108196 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/ELFAsmParser.cpp b/lib/MC/MCParser/ELFAsmParser.cpp
new file mode 100644
index 0000000..7a54dd3
--- /dev/null
+++ b/lib/MC/MCParser/ELFAsmParser.cpp
@@ -0,0 +1,68 @@
+//===- ELFAsmParser.cpp - ELF Assembly Parser -----------------------------===//
+//
+// The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "llvm/MC/MCParser/MCAsmParserExtension.h"
+#include "llvm/MC/MCSectionELF.h"
+#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCStreamer.h"
+#include "llvm/MC/MCParser/MCAsmLexer.h"
+using namespace llvm;
+
+namespace {
+
+class ELFAsmParser : public MCAsmParserExtension {
+ bool ParseSectionSwitch(StringRef Section, unsigned Type,
+ unsigned Flags, SectionKind Kind);
+
+public:
+ ELFAsmParser() {}
+
+ virtual void Initialize(MCAsmParser &Parser) {
+ // Call the base implementation.
+ this->MCAsmParserExtension::Initialize(Parser);
+
+ Parser.AddDirectiveHandler(this, ".data", MCAsmParser::DirectiveHandler(
+ &ELFAsmParser::ParseSectionDirectiveData));
+ Parser.AddDirectiveHandler(this, ".text", MCAsmParser::DirectiveHandler(
+ &ELFAsmParser::ParseSectionDirectiveText));
+ }
+
+ bool ParseSectionDirectiveData(StringRef, SMLoc) {
+ return ParseSectionSwitch(".data", MCSectionELF::SHT_PROGBITS,
+ MCSectionELF::SHF_WRITE |MCSectionELF::SHF_ALLOC,
+ SectionKind::getDataRel());
+ }
+ bool ParseSectionDirectiveText(StringRef, SMLoc) {
+ return ParseSectionSwitch(".text", MCSectionELF::SHT_PROGBITS,
+ MCSectionELF::SHF_EXECINSTR |
+ MCSectionELF::SHF_ALLOC, SectionKind::getText());
+ }
+};
+
+}
+
+bool ELFAsmParser::ParseSectionSwitch(StringRef Section, unsigned Type,
+ unsigned Flags, SectionKind Kind) {
+ if (getLexer().isNot(AsmToken::EndOfStatement))
+ return TokError("unexpected token in section switching directive");
+ Lex();
+
+ getStreamer().SwitchSection(getContext().getELFSection(
+ Section, Type, Flags, Kind));
+
+ return false;
+}
+
+namespace llvm {
+
+MCAsmParserExtension *createELFAsmParser() {
+ return new ELFAsmParser;
+}
+
+}