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[llvm-readobj]Add additional testing for various ELF features
This patch adds testing of areas of the code that are not fully tested, in particular dynamic table printing, ELF type printing, handling of edge cases where things are missing/empty (relocations/program header tables/section header table), and the --string-dump switch. Reviewed by: grimar, higuoxing, rupprecht Differential Revision: https://reviews.llvm.org/D58677 llvm-svn: 355003
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‎llvm/test/tools/llvm-readobj/elf-dynamic-empty.test

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# Show that llvm-readobj can handle an empty .dynamic section.
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# RUN: yaml2obj %s -o %t.o
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# RUN: llvm-readobj --dynamic-table %t.o | FileCheck %s --check-prefix LLVM
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# RUN: llvm-readelf --dynamic-table %t.o | FileCheck %s --check-prefix GNU --allow-empty
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# LLVM: File: {{.*}}.o
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# LLVM-NOT: DynamicSection
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# GNU-NOT: {{.}}
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!ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1000
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Sections:
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- Section: .dynamic

‎llvm/test/tools/llvm-readobj/elf-dynamic-malformed.test

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# Test handling of a dynamic section size which is not a multiple of its entry size.
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# RUN: yaml2obj %s --docnum=1 -o %t.bad-size
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# RUN: not llvm-readobj --dynamic-table %t.bad-size 2>&1 | FileCheck %s --check-prefix ERR-SIZE
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# RUN: not llvm-readelf --dynamic-table %t.bad-size 2>&1 | FileCheck %s --check-prefix ERR-SIZE
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# ERR-SIZE: Error reading file: Invalid entity size.
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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Content: "01234567"
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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# Test handling of a .dynamic section with an invalid entsize (i.e. not 2 * sizeof(Elf_Dyn)).
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# RUN: yaml2obj %s --docnum=2 -o %t.bad-entsize
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# RUN: llvm-readobj --dynamic-table %t.bad-entsize | FileCheck %s --check-prefix BAD-ENTSIZE
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# RUN: llvm-readelf --dynamic-table %t.bad-entsize | FileCheck %s --check-prefix BAD-ENTSIZE
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# BAD-ENTSIZE: DynamicSection [ (2 entries)
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# BAD-ENTSIZE-NEXT: Tag Type Name/Value
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# BAD-ENTSIZE-NEXT: 0x0000000000000015 DEBUG 0x0
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# BAD-ENTSIZE-NEXT: 0x0000000000000000 NULL 0x0
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# BAD-ENTSIZE-NEXT: ]
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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EntSize: 0x2
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Entries:
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- Tag: DT_DEBUG
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Value: 0
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- Tag: DT_NULL
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Value: 0
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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# Test handling of string references pointing past the end of the dynamic string table. In this case,
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# we have a DT_NEEDED tag pointing at offset 1 in a 1-byte string table.
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# RUN: yaml2obj %s --docnum=3 -o %t.bad-string
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# RUN: not llvm-readobj --dynamic-table %t.bad-string 2>&1 | FileCheck %s --check-prefix BAD-STRING
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# RUN: not llvm-readelf --dynamic-table %t.bad-string 2>&1 | FileCheck %s --check-prefix BAD-STRING
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# BAD-STRING: Error reading file: Invalid dynamic string table reference.
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynstr
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Type: SHT_STRTAB
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Address: 0x1000
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1010
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Entries:
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- Tag: DT_STRTAB
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Value: 0x1000
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- Tag: DT_STRSZ
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Value: 1
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- Tag: DT_NEEDED
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Value: 1
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- Tag: DT_NULL
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Value: 0
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynstr
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1010
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Sections:
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- Section: .dynamic
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# Test handling of DT_STRTAB pointing outside the file's address space.
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# RUN: yaml2obj %s --docnum=4 -o %t.bad-strtab
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# RUN: not llvm-readobj --dynamic-table %t.bad-strtab 2>&1 | FileCheck %s --check-prefix BAD-STRTAB
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# RUN: not llvm-readelf --dynamic-table %t.bad-strtab 2>&1 | FileCheck %s --check-prefix BAD-STRTAB
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# BAD-STRTAB: LLVM ERROR: Virtual address is not in any segment
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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Entries:
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- Tag: DT_STRTAB
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Value: 0x2000000
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- Tag: DT_STRSZ
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Value: 10
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- Tag: DT_NEEDED
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Value: 1
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- Tag: DT_NULL
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Value: 0x0
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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# Test handling of other d_ptr tags pointing outside the file's address space.
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# RUN: yaml2obj %s --docnum=5 -o %t.bad-rela
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# RUN: not llvm-readobj --dynamic-table %t.bad-rela 2>&1 | FileCheck %s --check-prefix BAD-RELA
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# RUN: not llvm-readelf --dynamic-table %t.bad-rela 2>&1 | FileCheck %s --check-prefix BAD-RELA
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# BAD-RELA: LLVM ERROR: Virtual address is not in any segment
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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Entries:
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- Tag: DT_RELA
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Value: 0x1000000
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- Tag: DT_NULL
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Value: 0x0
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1000
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Sections:
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- Section: .dynamic

‎llvm/test/tools/llvm-readobj/elf-dynamic-no-pt-dynamic.test

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# Show that no dumping occurs if there is no PT_DYNAMIC header.
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# RUN: yaml2obj %s -o %t.no-phdr
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# RUN: llvm-readobj --dynamic-table %t.no-phdr | FileCheck %s --check-prefix=LLVM
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# RUN: llvm-readelf --dynamic-table %t.no-phdr | FileCheck %s --check-prefix=GNU --allow-empty
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# LLVM: File: {{.*}}.no-phdr
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# LLVM-NEXT: Format: ELF64-x86-64
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# LLVM-NEXT: Arch: x86_64
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# LLVM-NEXT: AddressSize: 64bit
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# LLVM-NEXT: LoadName:{{ *}}
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# LLVM-NOT: {{.}}
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# GNU-NOT: {{.}}
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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Entries:
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- Tag: DT_NULL
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Value: 0
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic

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