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Added the darwin .weak_def_can_be_hidden directive.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@107886 91177308-0d34-0410-b5e6-96231b3b80d8
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@ -217,6 +217,11 @@ namespace llvm {
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/// global as being a weak defined symbol.
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/// global as being a weak defined symbol.
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const char *WeakDefDirective; // Defaults to NULL.
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const char *WeakDefDirective; // Defaults to NULL.
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/// WeakDefAutoPrivateDirective - This directive, if non-null, is used to
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/// declare a global as being a weak defined symbol that is automatically
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/// made private by the static linker.
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const char *WeakDefAutoPrivateDirective; // Defaults to NULL.
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/// LinkOnceDirective - This directive, if non-null is used to declare a
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/// LinkOnceDirective - This directive, if non-null is used to declare a
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/// global as being a weak defined symbol. This is used on cygwin/mingw.
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/// global as being a weak defined symbol. This is used on cygwin/mingw.
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const char *LinkOnceDirective; // Defaults to NULL.
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const char *LinkOnceDirective; // Defaults to NULL.
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@ -387,6 +392,9 @@ namespace llvm {
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bool hasNoDeadStrip() const { return HasNoDeadStrip; }
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bool hasNoDeadStrip() const { return HasNoDeadStrip; }
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const char *getWeakRefDirective() const { return WeakRefDirective; }
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const char *getWeakRefDirective() const { return WeakRefDirective; }
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const char *getWeakDefDirective() const { return WeakDefDirective; }
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const char *getWeakDefDirective() const { return WeakDefDirective; }
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const char *getWeakDefAutoPrivateDirective() const {
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return WeakDefAutoPrivateDirective;
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}
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const char *getLinkOnceDirective() const { return LinkOnceDirective; }
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const char *getLinkOnceDirective() const { return LinkOnceDirective; }
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MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;}
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MCSymbolAttr getHiddenVisibilityAttr() const { return HiddenVisibilityAttr;}
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@ -38,7 +38,8 @@ enum MCSymbolAttr {
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MCSA_Reference, ///< .reference (MachO)
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MCSA_Reference, ///< .reference (MachO)
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MCSA_Weak, ///< .weak
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MCSA_Weak, ///< .weak
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MCSA_WeakDefinition, ///< .weak_definition (MachO)
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MCSA_WeakDefinition, ///< .weak_definition (MachO)
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MCSA_WeakReference ///< .weak_reference (MachO)
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MCSA_WeakReference, ///< .weak_reference (MachO)
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MCSA_WeakDefAutoPrivate ///< .weak_def_can_be_hidden (MachO)
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};
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};
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enum MCAssemblerFlag {
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enum MCAssemblerFlag {
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@ -59,6 +59,7 @@ MCAsmInfo::MCAsmInfo() {
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HasNoDeadStrip = false;
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HasNoDeadStrip = false;
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WeakRefDirective = 0;
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WeakRefDirective = 0;
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WeakDefDirective = 0;
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WeakDefDirective = 0;
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WeakDefAutoPrivateDirective = 0;
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LinkOnceDirective = 0;
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LinkOnceDirective = 0;
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HiddenVisibilityAttr = MCSA_Hidden;
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HiddenVisibilityAttr = MCSA_Hidden;
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ProtectedVisibilityAttr = MCSA_Protected;
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ProtectedVisibilityAttr = MCSA_Protected;
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@ -33,6 +33,7 @@ MCAsmInfoDarwin::MCAsmInfoDarwin() {
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// Directives:
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// Directives:
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WeakDefDirective = "\t.weak_definition ";
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WeakDefDirective = "\t.weak_definition ";
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WeakRefDirective = "\t.weak_reference ";
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WeakRefDirective = "\t.weak_reference ";
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WeakDefAutoPrivateDirective = "\t.weak_def_can_be_hidden ";
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ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
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ZeroDirective = "\t.space\t"; // ".space N" emits N zeros.
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HasMachoZeroFillDirective = true; // Uses .zerofill
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HasMachoZeroFillDirective = true; // Uses .zerofill
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HasMachoTBSSDirective = true; // Uses .tbss
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HasMachoTBSSDirective = true; // Uses .tbss
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@ -288,6 +288,7 @@ void MCAsmStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
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case MCSA_WeakDefinition: OS << "\t.weak_definition\t"; break;
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case MCSA_WeakDefinition: OS << "\t.weak_definition\t"; break;
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// .weak_reference
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// .weak_reference
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case MCSA_WeakReference: OS << MAI.getWeakRefDirective(); break;
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case MCSA_WeakReference: OS << MAI.getWeakRefDirective(); break;
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case MCSA_WeakDefAutoPrivate: OS << "\t.weak_def_can_be_hidden\t"; break;
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}
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}
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OS << *Symbol;
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OS << *Symbol;
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@ -273,6 +273,10 @@ void MCMachOStreamer::EmitSymbolAttribute(MCSymbol *Symbol,
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// it has to be in a coalesced section, but this isn't enforced.
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// it has to be in a coalesced section, but this isn't enforced.
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SD.setFlags(SD.getFlags() | SF_WeakDefinition);
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SD.setFlags(SD.getFlags() | SF_WeakDefinition);
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break;
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break;
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case MCSA_WeakDefAutoPrivate:
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SD.setFlags(SD.getFlags() | SF_WeakDefinition | SF_WeakReference);
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break;
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}
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}
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}
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}
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@ -755,6 +755,8 @@ bool AsmParser::ParseStatement() {
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return ParseDirectiveSymbolAttribute(MCSA_WeakDefinition);
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return ParseDirectiveSymbolAttribute(MCSA_WeakDefinition);
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if (IDVal == ".weak_reference")
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if (IDVal == ".weak_reference")
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return ParseDirectiveSymbolAttribute(MCSA_WeakReference);
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return ParseDirectiveSymbolAttribute(MCSA_WeakReference);
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if (IDVal == ".weak_def_can_be_hidden")
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return ParseDirectiveSymbolAttribute(MCSA_WeakDefAutoPrivate);
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if (IDVal == ".comm")
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if (IDVal == ".comm")
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return ParseDirectiveComm(/*IsLocal=*/false);
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return ParseDirectiveComm(/*IsLocal=*/false);
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