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elf-reloc-zero-name-or-value.test @785cf2eraw · history · blame

# Show that the value field is omitted if a symbol has no name or value, but is
# printed if one is present. Test for both static and dynamic relocation
# printing.

# RUN: yaml2obj %s -o %t
# RUN: llvm-readelf --relocations --dyn-relocations %t | FileCheck %s

# CHECK:      Relocation section '.rela.text' at offset {{.*}} contains 2 entries:
# CHECK-NEXT:     Offset             Info             Type               Symbol's Value  Symbol's Name + Addend
# CHECK-NEXT: 0000000000000000  0000000000000000 R_X86_64_NONE                           1
# CHECK-NEXT: 0000000000000000  0000000100000000 R_X86_64_NONE          0000000000000000 sym + 1

# CHECK:      Relocation section '.rela.dyn' at offset {{.*}} contains 2 entries:
# CHECK-NEXT:     Offset             Info             Type               Symbol's Value  Symbol's Name + Addend
# CHECK-NEXT: 0000000000000000  0000000000000000 R_X86_64_NONE                           1
# CHECK-NEXT: 0000000000000000  0000000100000000 R_X86_64_NONE          0000000000000000 sym + 1

# CHECK:      'RELA' relocation section at offset {{.*}} contains 48 bytes:
# CHECK-NEXT:     Offset             Info             Type               Symbol's Value  Symbol's Name + Addend
# CHECK-NEXT: 0000000000000000  0000000000000000 R_X86_64_NONE                           1
# CHECK-NEXT: 0000000000000000  0000000100000000 R_X86_64_NONE          0000000000000000 sym + 1

# TODO: Add test for symbol with no name but with a value once yaml2obj allows
# referencing symbols with no name from relocations.

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_EXEC
  Machine: EM_X86_64
Sections:
  - Name: .text
    Type: SHT_PROGBITS
    Size: 0x10
  - Name: .rela.text
    Type: SHT_RELA
    Link: .symtab
    Info: .text
    Relocations:
      - Offset: 0
        Type: R_X86_64_NONE
        Addend: 1
      - Offset: 0
        Type: R_X86_64_NONE
        Addend: 1
        Symbol: sym
  - Name: .dynamic
    Type: SHT_DYNAMIC
    Flags: [SHF_ALLOC]
    Address: 0x1000
    AddressAlign: 0x1000
    Entries:
      - Tag: DT_RELA
        Value: 0x1100
      - Tag: DT_RELASZ
        Value: 48
      - Tag: DT_RELAENT
        Value: 24
      - Tag: DT_NULL
        Value: 0
  - Name: .rela.dyn
    Type: SHT_RELA
    Flags: [SHF_ALLOC]
    Info: .text
    Address: 0x1100
    AddressAlign: 0x100
    Relocations:
      - Offset: 0
        Type: R_X86_64_NONE
        Addend: 1
      - Offset: 0
        Type: R_X86_64_NONE
        Addend: 1
        Symbol: sym
Symbols:
  - Name:    sym
    Value:   0
    Section: .text
    Binding: STB_GLOBAL
DynamicSymbols:
  - Name:    sym
    Value:   0
    Section: .text
    Binding: STB_GLOBAL
ProgramHeaders:
  - Type: PT_LOAD
    VAddr: 0x1000
    Sections:
      - Section: .rela.dyn
      - Section: .dynamic
  - Type: PT_DYNAMIC
    VAddr: 0x1000
    Sections:
      - Section: .dynamic