std::string RPath;
std::vector<VersionDefinition> VersionDefinitions;
std::vector<llvm::StringRef> AuxiliaryList;
- std::vector<llvm::StringRef> DynamicList;
std::vector<llvm::StringRef> SearchPaths;
std::vector<llvm::StringRef> Undefined;
std::vector<SymbolVersion> VersionScriptGlobals;
if (auto *Arg = Args.getLastArg(OPT_dynamic_list))
if (Optional<MemoryBufferRef> Buffer = readFile(Arg->getValue()))
- parseDynamicList(*Buffer);
+ readDynamicList(*Buffer);
if (auto *Arg = Args.getLastArg(OPT_symbol_ordering_file))
if (Optional<MemoryBufferRef> Buffer = readFile(Arg->getValue()))
parseSymbolOrderingList(*Buffer);
for (auto *Arg : Args.filtered(OPT_export_dynamic_symbol))
- Config->DynamicList.push_back(Arg->getValue());
+ Config->VersionScriptGlobals.push_back(
+ {Arg->getValue(), /*IsExternCpp*/ false, /*HasWildcard*/ false});
+
+ // Dynamic lists are a simplified linker script that doesn't need the
+ // "global:" and implicitly ends with a "local:*". Set the variables needed to
+ // simulate that.
+ if (Args.hasArg(OPT_dynamic_list) || Args.hasArg(OPT_export_dynamic_symbol)) {
+ Config->ExportDynamic = true;
+ if (!Config->Shared)
+ Config->DefaultSymbolVersion = VER_NDX_LOCAL;
+ }
if (auto *Arg = Args.getLastArg(OPT_version_script))
if (Optional<MemoryBufferRef> Buffer = readFile(Arg->getValue()))
Symtab.scanUndefinedFlags();
Symtab.scanShlibUndefined();
- Symtab.scanDynamicList();
Symtab.scanVersionScript();
Symtab.addCombinedLTOObject();
void printHelp(const char *Argv0);
std::vector<uint8_t> parseHexstring(StringRef S);
-void parseDynamicList(MemoryBufferRef MB);
std::string createResponseFile(const llvm::opt::InputArgList &Args);
return Args;
}
-// Parse the --dynamic-list argument. A dynamic list is in the form
-//
-// { symbol1; symbol2; [...]; symbolN };
-//
-// Multiple groups can be defined in the same file, and they are merged
-// into a single group.
-void elf::parseDynamicList(MemoryBufferRef MB) {
- class Parser : public ScriptParserBase {
- public:
- Parser(MemoryBufferRef MB) : ScriptParserBase(MB) {}
-
- void run() {
- while (!atEOF()) {
- expect("{");
- while (!Error && !consume("}")) {
- Config->DynamicList.push_back(unquote(next()));
- expect(";");
- }
- expect(";");
- }
- }
- };
-
- Parser(MB).run();
-}
-
void elf::printHelp(const char *Argv0) {
ELFOptTable Table;
Table.PrintHelp(outs(), Argv0, "lld", false);
void readLinkerScript();
void readVersionScript();
+ void readDynamicList();
private:
void addFile(StringRef Path);
std::vector<std::unique_ptr<MemoryBuffer>> OwningMBs;
};
+void ScriptParser::readDynamicList() {
+ expect("{");
+ readAnonymousDeclaration();
+ if (!atEOF())
+ setError("EOF expected, but got " + next());
+}
+
void ScriptParser::readVersionScript() {
readVersionScriptCommand();
if (!atEOF())
StringRef Tok = next();
bool IsCXX = Tok == "\"C++\"";
if (!IsCXX && Tok != "\"C\"")
- setError("Unknown Language");
+ setError("Unknown language");
expect("{");
std::vector<SymbolVersion> Ret;
ScriptParser(MB).readVersionScript();
}
+void elf::readDynamicList(MemoryBufferRef MB) {
+ ScriptParser(MB).readDynamicList();
+}
+
template class elf::LinkerScript<ELF32LE>;
template class elf::LinkerScript<ELF32BE>;
template class elf::LinkerScript<ELF64LE>;
// Parses a version script.
void readVersionScript(MemoryBufferRef MB);
+void readDynamicList(MemoryBufferRef MB);
+
// This enum is used to implement linker script SECTIONS command.
// https://sourceware.org/binutils/docs/ld/SECTIONS.html#SECTIONS
enum SectionsCommandKind {
Sym->symbol()->ExportDynamic = true;
}
-// This function processes --export-dynamic-symbol and --dynamic-list.
-template <class ELFT> void SymbolTable<ELFT>::scanDynamicList() {
- for (StringRef S : Config->DynamicList)
- if (SymbolBody *B = find(S))
- B->symbol()->ExportDynamic = true;
-}
-
// Initialize DemangledSyms with a map from demangled symbols to symbol
// objects. Used to handle "extern C++" directive in version scripts.
//
void scanUndefinedFlags();
void scanShlibUndefined();
- void scanDynamicList();
void scanVersionScript();
SymbolBody *find(StringRef Name);
# CHECK-NEXT: Section: Undefined (0x0)
# CHECK-NEXT: }
# CHECK-NEXT: Symbol {
-# CHECK-NEXT: Name: bar
-# CHECK-NEXT: Value:
-# CHECK-NEXT: Size:
-# CHECK-NEXT: Binding: Global
-# CHECK-NEXT: Type:
-# CHECK-NEXT: Other:
-# CHECK-NEXT: Section: .text
-# CHECK-NEXT: }
-# CHECK-NEXT: Symbol {
# CHECK-NEXT: Name: bar2
# CHECK-NEXT: Value:
# CHECK-NEXT: Size:
# RUN: echo "{ extern \"BOGUS\" { test }; };" > %t1
# RUN: not ld.lld --dynamic-list %t1 2>&1 | FileCheck -check-prefix=ERR6 %s
-# ERR6: {{.*}}:1: ; expected, but got "BOGUS"
+# ERR6: {{.*}}:1: Unknown language
# RUN: diff %t.dir/build2/foo.o repro/%:t.dir/build2/foo.o
# RUN: echo "{ local: *; };" > ver
-# RUN: echo > dyn
+# RUN: echo "{};" > dyn
# RUN: echo > file
# RUN: echo > file2
# RUN: llvm-mc -filetype=obj -triple=x86_64-unknown-linux %s -o 'foo bar'
# RUN: ld.lld --version-script %t3.script -shared %t.o %t2.so -o %t3.so
# RUN: llvm-readobj -dyn-symbols %t3.so | FileCheck --check-prefix=DSO2 %s
-# --version-script filters --dynamic-list.
-# RUN: echo "{ foo1; foo2; };" > %t.list
-# RUN: ld.lld --version-script %t.script --dynamic-list %t.list %t.o %t2.so -o %t
-# RUN: llvm-readobj -dyn-symbols %t | FileCheck --check-prefix=EXE %s
-
# RUN: echo "VERSION_1.0 { global: foo1; local: *; };" > %t4.script
# RUN: echo "VERSION_2.0 { global: foo3; local: *; };" >> %t4.script
# RUN: ld.lld --version-script %t4.script -shared %t.o %t2.so -o %t4.so
# RUN: FileCheck -check-prefix=WARN2 %s
# WARN2: duplicate symbol 'foo1' in version script
+# RUN: echo "{ foo1; foo2; };" > %t.list
# RUN: ld.lld --version-script %t.script --dynamic-list %t.list %t.o %t2.so -o %t2
# RUN: llvm-readobj %t2 > /dev/null
# DSO2-NEXT: }
# DSO2-NEXT: ]
-# EXE: DynamicSymbols [
-# EXE-NEXT: Symbol {
-# EXE-NEXT: Name: @
-# EXE-NEXT: Value: 0x0
-# EXE-NEXT: Size: 0
-# EXE-NEXT: Binding: Local (0x0)
-# EXE-NEXT: Type: None (0x0)
-# EXE-NEXT: Other: 0
-# EXE-NEXT: Section: Undefined (0x0)
-# EXE-NEXT: }
-# EXE-NEXT: Symbol {
-# EXE-NEXT: Name: bar@
-# EXE-NEXT: Value: 0x0
-# EXE-NEXT: Size: 0
-# EXE-NEXT: Binding: Global (0x1)
-# EXE-NEXT: Type: Function (0x2)
-# EXE-NEXT: Other: 0
-# EXE-NEXT: Section: Undefined (0x0)
-# EXE-NEXT: }
-# EXE-NEXT: Symbol {
-# EXE-NEXT: Name: foo1@
-# EXE-NEXT: Value: 0x201000
-# EXE-NEXT: Size: 0
-# EXE-NEXT: Binding: Global (0x1)
-# EXE-NEXT: Type: None (0x0)
-# EXE-NEXT: Other: 0
-# EXE-NEXT: Section: .text
-# EXE-NEXT: }
-# EXE-NEXT: ]
-
# VERDSO: DynamicSymbols [
# VERDSO-NEXT: Symbol {
# VERDSO-NEXT: Name: @