xref: /llvm-project-15.0.7/llvm/test/tools/llvm-readobj/ELF/relocation-errors.test (revision a6db7cf1)

## Check how we report warnings when dumping an object with broken relocations.

# RUN: yaml2obj %s -o %t64
# RUN: llvm-readobj --relocations %t64 2>&1 | FileCheck %s -DFILE=%t64 --check-prefix=LLVM
# RUN: llvm-readelf --relocations %t64 2>&1 | FileCheck %s -DFILE=%t64 --check-prefix=GNU

# LLVM:      Relocations [
# LLVM-NEXT:   Section (3) .rel.text {
# LLVM-NEXT: warning: '[[FILE]]': unable to print relocation 0 in SHT_REL section with index 3: unable to read an entry with index 4278124286 from SHT_SYMTAB section with index 6: can't read an entry at 0x17e7e7e7d0: it goes past the end of the section (0x90)
# LLVM-NEXT: warning: '[[FILE]]': unable to print relocation 1 in SHT_REL section with index 3: unable to read an entry with index 4278124286 from SHT_SYMTAB section with index 6: can't read an entry at 0x17e7e7e7d0: it goes past the end of the section (0x90)
# LLVM-NEXT:     0x2 R_X86_64_NONE -{{$}}
# LLVM-NEXT:     0x3 R_X86_64_NONE .sec.symbol1{{$}}
# LLVM-NEXT: warning: '[[FILE]]': invalid section index: 255
# LLVM-NEXT:     0x4 R_X86_64_NONE <section 255>{{$}}
# LLVM-NEXT:     0x5 R_X86_64_NONE .sec.symbol2{{$}}
# LLVM-NEXT: warning: '[[FILE]]': a section [index 2] has an invalid sh_name (0xfefefefe) offset which goes past the end of the section name string table
# LLVM-NEXT:     0x6 R_X86_64_NONE <section 2>{{$}}
# LLVM-NEXT:   }
# LLVM-NEXT:   Section (4) .rela.text {
# LLVM-NEXT: warning: '[[FILE]]': unable to print relocation 0 in SHT_RELA section with index 4: invalid sh_type for symbol table, expected SHT_SYMTAB or SHT_DYNSYM
# LLVM-NEXT:   }
# LLVM-NEXT: ]

# GNU:       Relocation section '.rel.text' at offset 0x41 contains 7 entries:
# GNU-NEXT:      Offset             Info             Type               Symbol's Value  Symbol's Name
# GNU-NEXT:  warning: '[[FILE]]': unable to print relocation 0 in SHT_REL section with index 3: unable to read an entry with index 4278124286 from SHT_SYMTAB section with index 6: can't read an entry at 0x17e7e7e7d0: it goes past the end of the section (0x90)
# GNU-NEXT:  warning: '[[FILE]]': unable to print relocation 1 in SHT_REL section with index 3: unable to read an entry with index 4278124286 from SHT_SYMTAB section with index 6: can't read an entry at 0x17e7e7e7d0: it goes past the end of the section (0x90)
# GNU-NEXT:  0000000000000002  0000000000000000 R_X86_64_NONE
# GNU-NEXT:  0000000000000003  0000000200000000 R_X86_64_NONE 0000000000000000 .sec.symbol1
# GNU-NEXT:  warning: '[[FILE]]': invalid section index: 255
# GNU-NEXT:  0000000000000004  0000000400000000 R_X86_64_NONE 0000000000000000 <section 255>
# GNU-NEXT:  0000000000000005  0000000300000000 R_X86_64_NONE 0000000000000000 .sec.symbol2
# GNU-NEXT:  warning: '[[FILE]]': a section [index 2] has an invalid sh_name (0xfefefefe) offset which goes past the end of the section name string table
# GNU-NEXT:  0000000000000006  0000000500000000 R_X86_64_NONE 0000000000000000 <section 2>
# GNU-EMPTY:
# GNU-NEXT:  Relocation section '.rela.text' at offset 0xb1 contains 1 entries:
# GNU-NEXT:      Offset             Info             Type               Symbol's Value  Symbol's Name + Addend
# GNU-NEXT:  warning: '[[FILE]]': unable to print relocation 0 in SHT_RELA section with index 4: invalid sh_type for symbol table, expected SHT_SYMTAB or SHT_DYNSYM

--- !ELF
FileHeader:
  Class:   ELFCLASS64
  Data:    ELFDATA2LSB
  Type:    ET_REL
  Machine: EM_X86_64
Sections:
  - Name:    .text
    Type:    SHT_PROGBITS
    Content: '00'
  - Name:   .foo
    Type:   SHT_PROGBITS
    ShName: 0xFEFEFEFE
  - Name: .rel.text
    Type: SHT_REL
    Info: .text
    Relocations:
## Case 1: There is no symbol with index 0xFEFEFEFE.
      - Symbol: 0xFEFEFEFE
        Type:   R_X86_64_NONE
      - Symbol: 0xFEFEFEFE
        Type:   R_X86_64_NONE
## Case 2: Test that no warning is reported for a relocation against a symbol with index 0.
      - Offset: 0x2
        Symbol: 0
        Type:   R_X86_64_NONE
## Case 3: Test a relocation against a named section symbol that has an invalid
##         section index (larger than the number of sections).
      - Offset: 0x3
        Symbol: .sec.symbol1
        Type:   R_X86_64_NONE
## Case 4: Test a relocation against an unnamed section symbol that has an invalid
##         section index (larger than the number of sections).
      - Offset: 0x4
        Symbol: 4
        Type:   R_X86_64_NONE
## Case 4: Test a relocation against a named section symbol with a section with an invalid
##         sh_name offset that goes past the end of the section name string table.
      - Offset: 0x5
        Symbol: .sec.symbol2
        Type:   R_X86_64_NONE
## Case 5: Test a relocation against an unnamed section symbol with a section with an invalid
##         sh_name offset that goes past the end of the section name string table.
      - Offset: 0x6
        Symbol: 5
        Type:   R_X86_64_NONE
## Case 6: Test a relocation in a section that is linked to a symbol table that
##         has a section type that is neither SHT_SYMTAB nor SHT_DYNSYM.
##         In this case the code fails to find a corresponding symbol string table.
  - Name: .rela.text
    Type: SHT_RELA
    Info: .text
    Link: .fake.symtab
    Relocations:
      - Offset: 0x7
        Symbol: symbol
        Type:   R_X86_64_NONE
  - Name:    .fake.symtab
    Type:    SHT_PROGBITS
    EntSize: 24
    Size:    48
Symbols:
  - Name:    symbol
    Section: .text
    Value:   0
  - Name:  .sec.symbol1
    Type:  STT_SECTION
    Index: 0xFF
  - Name:  .sec.symbol2
    Type:  STT_SECTION
    Index: 0x2
  - Type:  STT_SECTION
    Index: 0xFF
  - Type:  STT_SECTION
    Index: 0x2