Add support for the .symver directive. This is really ugly, but most of it is
contained in the ELF object writer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@117448 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/MC/MCParser/ELFAsmParser.cpp b/lib/MC/MCParser/ELFAsmParser.cpp
index 1970124..33fdf98 100644
--- a/lib/MC/MCParser/ELFAsmParser.cpp
+++ b/lib/MC/MCParser/ELFAsmParser.cpp
@@ -12,6 +12,7 @@
#include "llvm/ADT/Twine.h"
#include "llvm/MC/MCAsmInfo.h"
#include "llvm/MC/MCContext.h"
+#include "llvm/MC/MCExpr.h"
#include "llvm/MC/MCParser/MCAsmLexer.h"
#include "llvm/MC/MCSectionELF.h"
#include "llvm/MC/MCStreamer.h"
@@ -51,6 +52,7 @@
AddDirectiveHandler<&ELFAsmParser::ParseDirectivePrevious>(".previous");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveType>(".type");
AddDirectiveHandler<&ELFAsmParser::ParseDirectiveIdent>(".ident");
+ AddDirectiveHandler<&ELFAsmParser::ParseDirectiveSymver>(".symver");
}
// FIXME: Part of this logic is duplicated in the MCELFStreamer. What is
@@ -116,6 +118,7 @@
bool ParseDirectivePrevious(StringRef, SMLoc);
bool ParseDirectiveType(StringRef, SMLoc);
bool ParseDirectiveIdent(StringRef, SMLoc);
+ bool ParseDirectiveSymver(StringRef, SMLoc);
private:
bool ParseSectionName(StringRef &SectionName);
@@ -377,6 +380,33 @@
return false;
}
+/// ParseDirectiveSymver
+/// ::= .symver foo, bar2@zed
+bool ELFAsmParser::ParseDirectiveSymver(StringRef, SMLoc) {
+ StringRef Name;
+ if (getParser().ParseIdentifier(Name))
+ return TokError("expected identifier in directive");
+
+ if (getLexer().isNot(AsmToken::Comma))
+ return TokError("expected a comma");
+
+ Lex();
+
+ StringRef AliasName;
+ if (getParser().ParseIdentifier(AliasName))
+ return TokError("expected identifier in directive");
+
+ if (AliasName.find('@') == StringRef::npos)
+ return TokError("expected a '@' in the name");
+
+ MCSymbol *Alias = getContext().GetOrCreateSymbol(AliasName);
+ MCSymbol *Sym = getContext().GetOrCreateSymbol(Name);
+ const MCExpr *Value = MCSymbolRefExpr::Create(Sym, getContext());
+
+ getStreamer().EmitAssignment(Alias, Value);
+ return false;
+}
+
namespace llvm {
MCAsmParserExtension *createELFAsmParser() {