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!

llvm-svn: 178679

1 files changed, 100 insertions, 0 deletions

diff --git a/llvm/test/tools/llvm-readobj/file-headers.test b/llvm/test/tools/llvm-readobj/file-headers.test
new file mode 100644
index 00000000000..226eb934233
--- /dev/null
+++ b/llvm/test/tools/llvm-readobj/file-headers.test
@@ -0,0 +1,100 @@
+RUN: llvm-readobj -h %p/Inputs/trivial.obj.coff-i386 \
+RUN:   | FileCheck %s -check-prefix COFF32
+RUN: llvm-readobj -h %p/Inputs/trivial.obj.coff-x86-64 \
+RUN:   | FileCheck %s -check-prefix COFF64
+RUN: llvm-readobj -h %p/Inputs/trivial.obj.elf-i386 \
+RUN:   | FileCheck %s -check-prefix ELF32
+RUN: llvm-readobj -h %p/Inputs/trivial.obj.elf-x86-64 \
+RUN:   | FileCheck %s -check-prefix ELF64
+
+COFF32:      File: {{(.*[/\\])?}}trivial.obj.coff-i386
+COFF32-NEXT: Format: COFF-i386
+COFF32-NEXT: Arch: i386
+COFF32-NEXT: AddressSize: 32bit
+COFF32-NEXT: ImageFileHeader {
+COFF32-NEXT:   Machine: IMAGE_FILE_MACHINE_I386 (0x14C)
+COFF32-NEXT:   SectionCount: 2
+COFF32-NEXT:   TimeDateStamp: 2013-03-20 17:56:46 (0x5149F85E)
+COFF32-NEXT:   PointerToSymbolTable: 0xA5
+COFF32-NEXT:   SymbolCount: 7
+COFF32-NEXT:   OptionalHeaderSize: 0
+COFF32-NEXT:   Characteristics [ (0x0)
+COFF32-NEXT:   ]
+COFF32-NEXT: }
+
+COFF64:      File: {{(.*[/\\])?}}trivial.obj.coff-x86-64
+COFF64-NEXT: Format: COFF-x86-64
+COFF64-NEXT: Arch: x86_64
+COFF64-NEXT: AddressSize: 64bit
+COFF64-NEXT: ImageFileHeader {
+COFF64-NEXT:   Machine: IMAGE_FILE_MACHINE_AMD64 (0x8664)
+COFF64-NEXT:   SectionCount: 2
+COFF64-NEXT:   TimeDateStamp: 2013-03-20 17:56:46 (0x5149F85E)
+COFF64-NEXT:   PointerToSymbolTable: 0xAB
+COFF64-NEXT:   SymbolCount: 7
+COFF64-NEXT:   OptionalHeaderSize: 0
+COFF64-NEXT:   Characteristics [ (0x0)
+COFF64-NEXT:   ]
+COFF64-NEXT: }
+
+ELF32:      File: {{(.*[/\\])?}}trivial.obj.elf-i386
+ELF32-NEXT: Format: ELF32-i386
+ELF32-NEXT: Arch: i386
+ELF32-NEXT: AddressSize: 32bit
+ELF32-NEXT: LoadName:
+ELF32-NEXT: ElfHeader {
+ELF32-NEXT:   Ident {
+ELF32-NEXT:     Magic: (7F 45 4C 46)
+ELF32-NEXT:     Class: 32-bit (0x1)
+ELF32-NEXT:     DataEncoding: LittleEndian (0x1)
+ELF32-NEXT:     FileVersion: 1
+ELF32-NEXT:     OS/ABI: GNU/Linux (0x3)
+ELF32-NEXT:     ABIVersion: 0
+ELF32-NEXT:     Unused: (00 00 00 00 00 00 00)
+ELF32-NEXT:   }
+ELF32-NEXT:   Type: Relocatable (0x1)
+ELF32-NEXT:   Machine: EM_386 (0x3)
+ELF32-NEXT:   Version: 1
+ELF32-NEXT:   Entry: 0x0
+ELF32-NEXT:   ProgramHeaderOffset: 0x0
+ELF32-NEXT:   SectionHeaderOffset: 0xC8
+ELF32-NEXT:   Flags [ (0x0)
+ELF32-NEXT:   ]
+ELF32-NEXT:   HeaderSize: 52
+ELF32-NEXT:   ProgramHeaderEntrySize: 0
+ELF32-NEXT:   ProgramHeaderCount: 0
+ELF32-NEXT:   SectionHeaderEntrySize: 40
+ELF32-NEXT:   SectionHeaderCount: 10
+ELF32-NEXT:   StringTableSectionIndex: 7
+ELF32-NEXT: }
+
+ELF64:      File: {{(.*[/\\])?}}trivial.obj.elf-x86-64
+ELF64-NEXT: Format: ELF64-x86-64
+ELF64-NEXT: Arch: x86_64
+ELF64-NEXT: AddressSize: 64bit
+ELF64-NEXT: LoadName:
+ELF64-NEXT: ElfHeader {
+ELF64-NEXT:   Ident {
+ELF64-NEXT:     Magic: (7F 45 4C 46)
+ELF64-NEXT:     Class: 64-bit (0x2)
+ELF64-NEXT:     DataEncoding: LittleEndian (0x1)
+ELF64-NEXT:     FileVersion: 1
+ELF64-NEXT:     OS/ABI: GNU/Linux (0x3)
+ELF64-NEXT:     ABIVersion: 0
+ELF64-NEXT:     Unused: (00 00 00 00 00 00 00)
+ELF64-NEXT:   }
+ELF64-NEXT:   Type: Relocatable (0x1)
+ELF64-NEXT:   Machine: EM_X86_64 (0x3E)
+ELF64-NEXT:   Version: 1
+ELF64-NEXT:   Entry: 0x0
+ELF64-NEXT:   ProgramHeaderOffset: 0x0
+ELF64-NEXT:   SectionHeaderOffset: 0xB8
+ELF64-NEXT:   Flags [ (0x0)
+ELF64-NEXT:   ]
+ELF64-NEXT:   HeaderSize: 64
+ELF64-NEXT:   ProgramHeaderEntrySize: 0
+ELF64-NEXT:   ProgramHeaderCount: 0
+ELF64-NEXT:   SectionHeaderEntrySize: 64
+ELF64-NEXT:   SectionHeaderCount: 10
+ELF64-NEXT:   StringTableSectionIndex: 7
+ELF64-NEXT: }