SecBSD's official ports repository

devel/llvm/patches/patch-tools_lld_ELF_Symbols_h

@@ -0,0 +1,53 @@
+- Generate __data_start symbol that marks the start of .data when __data_start
+  is referenced from code being linked.
+- add .gnu.warning.SYMBOL support to ld.lld(1)
+
+Index: tools/lld/ELF/Symbols.h
+--- tools/lld/ELF/Symbols.h.orig
++++ tools/lld/ELF/Symbols.h
+@@ -142,6 +142,9 @@ class Symbol { (public)
+   // True if this symbol is specified by --trace-symbol option.
+   uint8_t traced : 1;
+ 
++  // True if the .gnu.warning.SYMBOL is set for the symbol
++  uint8_t gwarn : 1;
++
+   inline void replace(const Symbol &newSym);
+ 
+   bool includeInDynsym() const;
+@@ -247,7 +250,7 @@ class Symbol { (public)
+         type(type), stOther(stOther), symbolKind(k), visibility(stOther & 3),
+         isUsedInRegularObj(!file || file->kind() == InputFile::ObjKind),
+         exportDynamic(isExportDynamic(k, visibility)), inDynamicList(false),
+-        canInline(false), referenced(false), traced(false), needsPltAddr(false),
++        canInline(false), referenced(false), traced(false), gwarn(false), needsPltAddr(false),
+         isInIplt(false), gotInIgot(false), isPreemptible(false),
+         used(!config->gcSections), needsTocRestore(false),
+         scriptDefined(false) {}
+@@ -436,6 +439,9 @@ struct ElfSym {
+   // __bss_start
+   static Defined *bss;
+ 
++  // __data_start
++  static Defined *data;
++
+   // etext and _etext
+   static Defined *etext1;
+   static Defined *etext2;
+@@ -557,6 +563,7 @@ void Symbol::replace(const Symbol &newSym) {
+   canInline = old.canInline;
+   referenced = old.referenced;
+   traced = old.traced;
++  gwarn = old.gwarn;
+   isPreemptible = old.isPreemptible;
+   scriptDefined = old.scriptDefined;
+   partition = old.partition;
+@@ -575,6 +582,8 @@ void Symbol::replace(const Symbol &newSym) {
+ void maybeWarnUnorderableSymbol(const Symbol *sym);
+ bool computeIsPreemptible(const Symbol &sym);
+ void reportBackrefs();
++
++extern llvm::DenseMap<StringRef, StringRef> gnuWarnings;
+ 
+ // A mapping from a symbol to an InputFile referencing it backward. Used by
+ // --warn-backrefs.