[PATCH] D58796: [llvm-readobj] Display section names for STT_SECTION symbols.

[Matt Davis via Phabricator via llvm-commits]

mattd created this revision.
mattd added reviewers: jhenderson, rupprecht.
Herald added subscribers: MaskRay, arichardson, javed.absar, emaste.
Herald added a reviewer: espindola.
Herald added a project: LLVM.
mattd edited the summary of this revision.

This patch will obtain the section name for symbols that refer to a section.  Prior to this patch the Name field for STT_SECTIONs was blank, now it is populated.

Before:

  Symbol table '.symtab' contains 6 entries:
     Num:    Value          Size Type    Bind   Vis      Ndx Name
       0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND
       1: 0000000000000000     0 SECTION LOCAL  DEFAULT    1
       2: 0000000000000000     0 SECTION LOCAL  DEFAULT    3
       3: 0000000000000000     0 SECTION LOCAL  DEFAULT    4
       4: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND _GLOBAL_OFFSET_TABLE_
       5: 0000000000000000     0 TLS     GLOBAL DEFAULT  UND sym

With this patch:

  Symbol table '.symtab' contains 6 entries:
     Num:    Value          Size Type    Bind   Vis      Ndx Name
       0: 0000000000000000     0 NOTYPE  LOCAL  DEFAULT  UND
       1: 0000000000000000     0 SECTION LOCAL  DEFAULT    1 .text
       2: 0000000000000000     0 SECTION LOCAL  DEFAULT    3 .data
       3: 0000000000000000     0 SECTION LOCAL  DEFAULT    4 .bss
       4: 0000000000000000     0 NOTYPE  GLOBAL DEFAULT  UND _GLOBAL_OFFSET_TABLE_
       5: 0000000000000000     0 TLS     GLOBAL DEFAULT  UND sym

This fixes PR40788


https://reviews.llvm.org/D58796

Files:
  llvm/test/MC/ARM/arm-elf-symver.s
  llvm/test/MC/ELF/alias.s
  llvm/test/MC/ELF/many-sections-2.s
  llvm/test/MC/ELF/section-sym.s
  llvm/test/MC/ELF/symver.s
  llvm/test/MC/ELF/weakref.s
  llvm/test/Object/readobj-shared-object.test
  llvm/test/tools/llvm-readobj/sections-ext.test
  llvm/test/tools/llvm-readobj/symbols.test
  llvm/tools/llvm-readobj/ELFDumper.cpp

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