54 lines
2 KiB
Text
54 lines
2 KiB
Text
|
- 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.
|