Added llvm-mc support for parsing the .desc directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75645 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvm-mc/AsmParser.cpp b/tools/llvm-mc/AsmParser.cpp
index c105801..d94b7b3 100644
--- a/tools/llvm-mc/AsmParser.cpp
+++ b/tools/llvm-mc/AsmParser.cpp
@@ -526,6 +526,8 @@
return ParseDirectiveComm(/*IsLocal=*/true);
if (!strcmp(IDVal, ".zerofill"))
return ParseDirectiveDarwinZerofill();
+ if (!strcmp(IDVal, ".desc"))
+ return ParseDirectiveDarwinSymbolDesc();
if (!strcmp(IDVal, ".subsections_via_symbols"))
return ParseDirectiveDarwinSubsectionsViaSymbols();
@@ -909,6 +911,37 @@
return false;
}
+/// ParseDirectiveDarwinSymbolDesc
+/// ::= .desc identifier , expression
+bool AsmParser::ParseDirectiveDarwinSymbolDesc() {
+ if (Lexer.isNot(asmtok::Identifier))
+ return TokError("expected identifier in directive");
+
+ // handle the identifier as the key symbol.
+ SMLoc IDLoc = Lexer.getLoc();
+ MCSymbol *Sym = Ctx.GetOrCreateSymbol(Lexer.getCurStrVal());
+ Lexer.Lex();
+
+ if (Lexer.isNot(asmtok::Comma))
+ return TokError("unexpected token in '.desc' directive");
+ Lexer.Lex();
+
+ SMLoc DescLoc = Lexer.getLoc();
+ int64_t DescValue;
+ if (ParseAbsoluteExpression(DescValue))
+ return true;
+
+ if (Lexer.isNot(asmtok::EndOfStatement))
+ return TokError("unexpected token in '.desc' directive");
+
+ Lexer.Lex();
+
+ // Set the n_desc field of this Symbol to this DescValue
+ Out.EmitSymbolDesc(Sym, DescValue);
+
+ return false;
+}
+
/// ParseDirectiveComm
/// ::= ( .comm | .lcomm ) identifier , size_expression [ , align_expression ]
bool AsmParser::ParseDirectiveComm(bool IsLocal) {