// RUN: } " > %t.script
// RUN: ld.lld --script %t.script %t.o -o %t
// RUN: llvm-objdump -d --no-show-raw-insn --print-imm-hex %t | FileCheck %s
-// RUN: llvm-nm --no-sort %t | FileCheck --check-prefix=NM %s
+// RUN: llvm-nm --no-sort --special-syms %t | FileCheck --check-prefix=NM %s
// Check that we have the out of branch range calculation right. The immediate
// field is signed so we have a slightly higher negative displacement.
* Added an option (--show-section-sizes) to llvm-dwarfdump to show the sizes
of all debug sections within a file.
+* llvm-nm now implements the flag ``--special-syms`` and will filter out special
+ symbols, i.e. mapping symbols on ARM and AArch64, by default. This matches
+ the GNU nm behavior.
+
Changes to LLDB
===============
+## Test --special-syms flag.
# RUN: yaml2obj %s -o %t
-# Test --special-syms flag. Currently this flag is a no-op, so outputs with and without
-# this flag should be identical. GNU nm doesn't show ARM and AArch64 special symbols
-# without --special-syms, so this test is to be changed when/if we decide to implement
-# GNU nm-like behavior in llvm-nm
-# RUN: llvm-nm %t | FileCheck %s
+# RUN: llvm-nm %t | count 0
# RUN: llvm-nm %t --special-syms | FileCheck %s
!ELF
# RUN: yaml2obj %s -o %t.o
-# RUN: llvm-nm --debug-syms %t.o | FileCheck %s --implicit-check-not {{.}} --check-prefix SYMBOL
-# RUN: llvm-nm -a %t.o | FileCheck %s --implicit-check-not {{.}} --check-prefix SYMBOL
+# RUN: llvm-nm --special-syms --debug-syms %t.o | FileCheck %s --implicit-check-not {{.}} --check-prefix SYMBOL
+# RUN: llvm-nm --special-syms -a %t.o | FileCheck %s --implicit-check-not {{.}} --check-prefix SYMBOL
# SYMBOL: 0000000000000000 n $a
# SYMBOL-NEXT: 0000000000000000 n $d
cl::alias JustSymbolNames("j", cl::desc("Alias for --just-symbol-name"),
cl::aliasopt(JustSymbolName), cl::Grouping);
-cl::opt<bool> SpecialSyms("special-syms",
- cl::desc("No-op. Used for GNU compatibility only"));
+cl::opt<bool>
+ SpecialSyms("special-syms",
+ cl::desc("Do not filter special symbols from the output"),
+ cl::cat(NMCat));
cl::list<std::string> SegSect("s", cl::multi_val(2), cl::ZeroOrMore,
cl::value_desc("segment section"), cl::Hidden,
}
}
+static bool isSpecialSym(SymbolicFile &Obj, StringRef Name) {
+ auto *ELFObj = dyn_cast<ELFObjectFileBase>(&Obj);
+ if (!ELFObj)
+ return false;
+ uint16_t EMachine = ELFObj->getEMachine();
+ if (EMachine != ELF::EM_ARM && EMachine != ELF::EM_AARCH64)
+ return false;
+ return !Name.empty() && Name[0] == '$';
+}
+
static void sortAndPrintSymbolList(SymbolicFile &Obj, bool printName,
StringRef ArchiveName,
StringRef ArchitectureName) {
bool Global = SymFlags & SymbolRef::SF_Global;
bool Weak = SymFlags & SymbolRef::SF_Weak;
if ((!Undefined && UndefinedOnly) || (Undefined && DefinedOnly) ||
- (!Global && ExternalOnly) || (Weak && NoWeakSymbols))
+ (!Global && ExternalOnly) || (Weak && NoWeakSymbols) ||
+ (!SpecialSyms && isSpecialSym(Obj, Name)))
continue;
if (PrintFileName)
writeFileName(outs(), ArchiveName, ArchitectureName);