[ELF] Return the section name when calling getSymbolName on a section symbol.
Summary:
Previously, llvm-nm would report symbols for .debug and .note sections as: '?' with an empty section name:
```
00000000 ?
00000000 ?
...
```
With this patch the output more closely resembles GNU nm:
```
00000000 N .debug_abbrev
00000000 n .note.GNU-stack
...
```
This patch calls `getSectionName` for sections that belong to symbols of type `ELF::STT_SECTION`, which returns the name of the section from the section string table.
Reviewers: Bigcheese, davide, jhenderson
Reviewed By: davide, jhenderson
Subscribers: rupprecht, jhenderson, llvm-commits
Differential Revision: https://reviews.llvm.org/D57105
llvm-svn: 352785
diff --git a/llvm/tools/llvm-objdump/llvm-objdump.cpp b/llvm/tools/llvm-objdump/llvm-objdump.cpp
index 87ed8bb..a82ed09 100644
--- a/llvm/tools/llvm-objdump/llvm-objdump.cpp
+++ b/llvm/tools/llvm-objdump/llvm-objdump.cpp
@@ -941,8 +941,11 @@
report_error(Obj->getFileName(), SectionOrErr.takeError());
uint8_t SymbolType = ELF::STT_NOTYPE;
- if (Obj->isELF())
+ if (Obj->isELF()) {
SymbolType = getElfSymbolType(Obj, Symbol);
+ if (SymbolType == ELF::STT_SECTION)
+ continue;
+ }
section_iterator SecI = *SectionOrErr;
if (SecI != Obj->section_end())