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Added llvm-mc support for parsing the .lsym directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@75685 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -126,6 +126,12 @@ namespace llvm {
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/// @param DescValue - The value to set into the n_desc field.
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virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) = 0;
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/// EmitLocalSymbol - Emit a local symbol of @param Value to @param Symbol.
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///
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/// @param Symbol - The local symbol being created.
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/// @param Value - The value for the symbol.
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virtual void EmitLocalSymbol(MCSymbol *Symbol, const MCValue &Value) = 0;
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/// EmitCommonSymbol - Emit a common or local common symbol of @param Size
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/// with the @param Pow2Alignment if non-zero.
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///
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@ -47,6 +47,8 @@ namespace {
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virtual void EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue);
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virtual void EmitLocalSymbol(MCSymbol *Symbol, const MCValue &Value);
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virtual void EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
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unsigned Pow2Alignment, bool IsLocal);
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@ -172,6 +174,10 @@ void MCAsmStreamer::EmitSymbolDesc(MCSymbol *Symbol, unsigned DescValue) {
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OS << ".desc" << ' ' << Symbol->getName() << ',' << DescValue << '\n';
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}
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void MCAsmStreamer::EmitLocalSymbol(MCSymbol *Symbol, const MCValue &Value) {
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OS << ".lsym" << ' ' << Symbol->getName() << ',' << Value << '\n';
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}
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void MCAsmStreamer::EmitCommonSymbol(MCSymbol *Symbol, unsigned Size,
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unsigned Pow2Alignment, bool IsLocal) {
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if (IsLocal)
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8
test/MC/AsmParser/directive_lsym.s
Normal file
8
test/MC/AsmParser/directive_lsym.s
Normal file
@ -0,0 +1,8 @@
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# RUN: llvm-mc %s | FileCheck %s
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# CHECK: TEST0:
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# CHECK: .lsym bar,foo
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# CHECK: .lsym baz,3
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TEST0:
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.lsym bar, foo
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.lsym baz, 2+1
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@ -528,6 +528,8 @@ bool AsmParser::ParseStatement() {
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return ParseDirectiveDarwinZerofill();
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if (!strcmp(IDVal, ".desc"))
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return ParseDirectiveDarwinSymbolDesc();
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if (!strcmp(IDVal, ".lsym"))
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return ParseDirectiveDarwinLsym();
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if (!strcmp(IDVal, ".subsections_via_symbols"))
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return ParseDirectiveDarwinSubsectionsViaSymbols();
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@ -1126,3 +1128,33 @@ bool AsmParser::ParseDirectiveAbort() {
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return false;
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}
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/// ParseDirectiveLsym
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/// ::= .lsym identifier , expression
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bool AsmParser::ParseDirectiveDarwinLsym() {
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if (Lexer.isNot(asmtok::Identifier))
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return TokError("expected identifier in directive");
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// handle the identifier as the key symbol.
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SMLoc IDLoc = Lexer.getLoc();
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MCSymbol *Sym = Ctx.GetOrCreateSymbol(Lexer.getCurStrVal());
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Lexer.Lex();
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if (Lexer.isNot(asmtok::Comma))
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return TokError("unexpected token in '.lsym' directive");
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Lexer.Lex();
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MCValue Expr;
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if (ParseRelocatableExpression(Expr))
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return true;
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if (Lexer.isNot(asmtok::EndOfStatement))
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return TokError("unexpected token in '.lsym' directive");
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Lexer.Lex();
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// Create the Sym with the value of the Expr
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Out.EmitLocalSymbol(Sym, Expr);
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return false;
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}
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@ -110,6 +110,7 @@ private:
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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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