Implements low-level object file format specific output for COFF and

ELF with support for:

- File headers
- Section headers + data
- Relocations
- Symbols
- Unwind data (only COFF/Win64)

The output format follows a few rules:
- Values are almost always output one per line (as elf-dump/coff-dump already do). - Many values are translated to something readable (like enum names), with the raw value in parentheses.
- Hex numbers are output in uppercase, prefixed with "0x".
- Flags are sorted alphabetically.
- Lists and groups are always delimited.

Example output:
---------- snip ----------
Sections [
  Section {
    Index: 1
    Name: .text (5)
    Type: SHT_PROGBITS (0x1)
    Flags [ (0x6)
      SHF_ALLOC (0x2)
      SHF_EXECINSTR (0x4)
    ]
    Address: 0x0
    Offset: 0x40
    Size: 33
    Link: 0
    Info: 0
    AddressAlignment: 16
    EntrySize: 0
    Relocations [
      0x6 R_386_32 .rodata.str1.1 0x0
      0xB R_386_PC32 puts 0x0
      0x12 R_386_32 .rodata.str1.1 0x0
      0x17 R_386_PC32 puts 0x0
    ]
    SectionData (
      0000: 83EC04C7 04240000 0000E8FC FFFFFFC7  |.....$..........|
      0010: 04240600 0000E8FC FFFFFF31 C083C404  |.$.........1....|
      0020: C3                                   |.|
    )
  }
]
---------- snip ----------

Relocations and symbols can be output standalone or together with the section header as displayed in the example.
This feature set supports all tests in test/MC/COFF and test/MC/ELF (and I suspect all additional tests using elf-dump), making elf-dump and coff-dump deprecated.

Patch by Nico Rieck!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@178679 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 32 insertions, 0 deletions

diff --git a/test/tools/llvm-readobj/relocations.test b/test/tools/llvm-readobj/relocations.test
new file mode 100644
index 0000000000..0608565373
--- /dev/null
+++ b/test/tools/llvm-readobj/relocations.test
@@ -0,0 +1,32 @@
+RUN: llvm-readobj -r %p/Inputs/trivial.obj.coff-i386 \
+RUN:   | FileCheck %s -check-prefix COFF
+RUN: llvm-readobj -r %p/Inputs/trivial.obj.elf-i386 \
+RUN:   | FileCheck %s -check-prefix ELF
+RUN: llvm-readobj -r %p/Inputs/trivial.obj.macho-i386 \
+RUN:   | FileCheck %s -check-prefix MACHO
+
+COFF:      Relocations [
+COFF-NEXT:   Section (1) .text {
+COFF-NEXT:     0x4 IMAGE_REL_I386_DIR32 .data
+COFF-NEXT:     0x9 IMAGE_REL_I386_REL32 _puts
+COFF-NEXT:     0xE IMAGE_REL_I386_REL32 _SomeOtherFunction
+COFF-NEXT:   }
+COFF-NEXT: ]
+
+ELF:      Relocations [
+ELF-NEXT:   Section (1) .text {
+ELF-NEXT:     0xC R_386_GOTPC _GLOBAL_OFFSET_TABLE_ 0x0
+ELF-NEXT:     0x12 R_386_GOTOFF .L.str 0x0
+ELF-NEXT:     0x1A R_386_PLT32 puts 0x0
+ELF-NEXT:     0x1F R_386_PLT32 SomeOtherFunction 0x0
+ELF-NEXT:   }
+ELF-NEXT: ]
+
+MACHO:      Relocations [
+MACHO-NEXT:   Section __text {
+MACHO-NEXT:     0x18 GENERIC_RELOC_VANILLA _SomeOtherFunction 0x0
+MACHO-NEXT:     0x13 GENERIC_RELOC_VANILLA _puts 0x0
+MACHO-NEXT:     0xB GENERIC_RELOC_LOCAL_SECTDIFF _main 0x{{[0-9A-F]+}}
+MACHO-NEXT:     0x0 GENERIC_RELOC_PAIR _main 0x{{[0-9A-F]+}}
+MACHO-NEXT:   }
+MACHO-NEXT: ]