elf-dynamic-relocs.test 2.84 KB
## Show that llvm-objdump can dump dynamic relocations.
## Specifically, we are checking that the tags DT_RELA, DT_REL and DT_JMPREL
## properly identify relocation tables.

# RUN: yaml2obj %s -o %t
# RUN: llvm-objdump --dynamic-reloc %t | FileCheck --implicit-check-not=R_X86 %s
# RUN: llvm-objdump -R %t | FileCheck --implicit-check-not=R_X86 %s

# CHECK:      file format ELF64-x86-64
# CHECK:      DYNAMIC RELOCATION RECORDS
# CHECK-NEXT: 0000000000000000 R_X86_64_RELATIVE *ABS*
# CHECK-NEXT: 0000000000000000 R_X86_64_JUMP_SLOT bar
# CHECK-NEXT: 0000000000000008 R_X86_64_NONE foo

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_DYN
  Machine: EM_X86_64
Sections:
  - Name:         .foo
    Type:         SHT_PROGBITS
    Size:         16
    Flags:        [SHF_ALLOC]
    Address:      0x100000
    AddressAlign: 0x100
  - Name:         .got.plt
    Type:         SHT_PROGBITS
    Flags:        [SHF_WRITE, SHF_ALLOC]
    Address:      0x100100
    AddressAlign: 0x1000
  - Name:         .rela.dyn
    Type:         SHT_RELA
    Address:      0x100200
    AddressAlign: 0x100
    Info:         .foo
    Link:         .dynsym
    Flags:        [SHF_ALLOC]
    Relocations:
      - Offset: 0
        Type:   R_X86_64_RELATIVE
        Addend: 0
  - Name:         .rela.plt
    Type:         SHT_RELA
    Address:      0x100300
    AddressAlign: 0x100
    Info:         .got.plt
    Link:         .dynsym
    Flags:        [SHF_ALLOC]
    Relocations:
      - Offset: 0
        Symbol: 2 # bar
        Type:   R_X86_64_JUMP_SLOT
  - Name:         .rel.dyn
    Type:         SHT_REL
    Address:      0x100400
    AddressAlign: 0x100
    Info:         .foo
    Link:         .dynsym
    Flags:        [SHF_ALLOC]
    Relocations:
      - Offset: 8
        Symbol: 1 # foo
        Type:   R_X86_64_NONE
  - Name:         .dynamic
    Type:         SHT_DYNAMIC
    Address:      0x100500
    AddressAlign: 0x100
    Link:         .dynstr
    Flags:        [SHF_ALLOC]
    Entries:
      - Tag: DT_RELA
        Value: 0x100200
      - Tag: DT_RELASZ
        Value: 24
      - Tag: DT_RELAENT
        Value: 24
      - Tag: DT_JMPREL
        Value: 0x100300
      - Tag: DT_PLTREL
        Value: 7
      - Tag: DT_PLTRELSZ
        Value: 24
      - Tag: DT_REL
        Value: 0x100400
      - Tag: DT_RELSZ
        Value: 16
      - Tag: DT_RELENT
        Value: 16
      - Tag: DT_NULL
        Value: 0
ProgramHeaders:
  - Type:     PT_LOAD
    VAddr:    0x100000
    Align:    0x100
    Sections:
      - Section: .foo
      - Section: .rela.dyn
      - Section: .rela.plt
      - Section: .rel.dyn
      - Section: .dynamic
  - Type:     PT_DYNAMIC
    VAddr:    0x100500
    Align:    0x100
    Sections:
      - Section: .dynamic
DynamicSymbols:
  - Name:    foo
    Section: .foo
    Binding: STB_GLOBAL
  - Name:    bar
    Type:    STT_FUNC
    Binding: STB_GLOBAL