Index: test/tools/llvm-objcopy/strip-symbol.test =================================================================== --- /dev/null +++ test/tools/llvm-objcopy/strip-symbol.test @@ -0,0 +1,57 @@ +# RUN: yaml2obj %s > %t +# RUN: llvm-objcopy --strip-symbol Global -N Weak %t %t2 +# RUN: llvm-readobj -symbols %t2 | FileCheck %s + +!ELF +FileHeader: + Class: ELFCLASS64 + Data: ELFDATA2LSB + Type: ET_REL + Machine: EM_X86_64 +Sections: + - Name: .text + Type: SHT_PROGBITS + Flags: [ SHF_ALLOC, SHF_EXECINSTR ] + Address: 0x1000 + AddressAlign: 0x0000000000000010 + Size: 64 +Symbols: + Local: + - Name: Local + Type: STT_FUNC + Section: .text + Value: 0x1000 + Size: 8 + Weak: + - Name: Weak + Type: STT_FUNC + Size: 8 + Section: .text + Value: 0x1008 + Global: + - Name: Global + Type: STT_FUNC + Size: 8 + Section: .text + Value: 0x1010 + +#CHECK: Symbols [ +#CHECK-NEXT: Symbol { +#CHECK-NEXT: Name: +#CHECK-NEXT: Value: 0x0 +#CHECK-NEXT: Size: 0 +#CHECK-NEXT: Binding: Local +#CHECK-NEXT: Type: None +#CHECK-NEXT: Other: 0 +#CHECK-NEXT: Section: Undefined +#CHECK-NEXT: } +#CHECK-NEXT: Symbol { +#CHECK-NEXT: Name: Local +#CHECK-NEXT: Value: 0x1000 +#CHECK-NEXT: Size: 8 +#CHECK-NEXT: Binding: Local +#CHECK-NEXT: Type: Function +#CHECK-NEXT: Other: 0 +#CHECK-NEXT: Section: .text +#CHECK-NEXT: } +#CHECK-NEXT:] Index: tools/llvm-objcopy/Opts.td =================================================================== --- tools/llvm-objcopy/Opts.td +++ tools/llvm-objcopy/Opts.td @@ -78,3 +78,8 @@ HelpText<"Remove all local symbols except file and section symbols">; def x : Flag<["-"], "x">, Alias; +defm strip_symbol : Eq<"strip-symbol">, + MetaVarName<"symbol">, + HelpText<"Remove symbol ">; +def N : JoinedOrSeparate<["-"], "N">, + Alias; Index: tools/llvm-objcopy/llvm-objcopy.cpp =================================================================== --- tools/llvm-objcopy/llvm-objcopy.cpp +++ tools/llvm-objcopy/llvm-objcopy.cpp @@ -121,6 +121,7 @@ std::vector SymbolsToLocalize; std::vector SymbolsToGlobalize; std::vector SymbolsToWeaken; + std::vector SymbolsToRemove; StringMap SymbolsToRename; bool StripAll; bool StripAllGNU; @@ -350,6 +351,11 @@ Sym.getShndx() != SHN_UNDEF && Sym.Type != STT_FILE && Sym.Type != STT_SECTION) return true; + + if (!Config.SymbolsToRemove.empty() && + is_contained(Config.SymbolsToRemove, Sym.Name)) + return true; + return false; }); } @@ -445,6 +451,8 @@ Config.SymbolsToGlobalize.push_back(Arg->getValue()); for (auto Arg : InputArgs.filtered(OBJCOPY_weaken_symbol)) Config.SymbolsToWeaken.push_back(Arg->getValue()); + for (auto Arg : InputArgs.filtered(OBJCOPY_strip_symbol)) + Config.SymbolsToRemove.push_back(Arg->getValue()); return Config; }