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68 lines
2.4 KiB
68 lines
2.4 KiB
4 months ago
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## Test cases related to the value of the e_shnum field of the ELF header live here.
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## Normally an object that does not have sections has e_shnum == 0.
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## Also, e_shnum might be 0, when the the number of entries in the section
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## header table is larger than or equal to SHN_LORESERVE (0xff00). In this case
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## the real number of entries in the section header table is held in the sh_size
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## member of the initial entry in the section header table.
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## In the test case below we have an object that has e_shnum = 0 and the real
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## number of sections is written to the sh_size member of the initial entry in
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## the section header table. Check that we emit the `EShNum` key properly.
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# RUN: yaml2obj %s -o %t1
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# RUN: obj2yaml %t1 | FileCheck %s --check-prefix=PRESERVE
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# PRESERVE: --- !ELF
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# PRESERVE-NEXT: FileHeader:
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# PRESERVE-NEXT: Class: ELFCLASS64
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# PRESERVE-NEXT: Data: ELFDATA2LSB
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# PRESERVE-NEXT: Type: ET_REL
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# PRESERVE-NEXT: EShNum: 0x0
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# PRESERVE-NEXT: Sections:
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# PRESERVE-NEXT: - Type: SHT_NULL
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# PRESERVE-NEXT: Size: 0x3
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# PRESERVE-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_REL
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EShNum: 0x0
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EShOff: [[ESHOFF=<none>]]
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Sections:
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- Type: SHT_NULL
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## 3 sections total: SHT_NULL + 2 implicit sections: .strtab and .shstrtab.
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Size: [[SIZE=0x3]]
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## In the test case below we have an object with a non-zero section header table
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## file offset and an initial entry in the section header table with sh_size of 0.
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## Here we check that we are able to dump such objects properly.
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# RUN: yaml2obj %s -DSIZE=0x0 -o %t2
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# RUN: obj2yaml %t2 | FileCheck %s --check-prefix=NO-SECTIONS
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# NO-SECTIONS: --- !ELF
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# NO-SECTIONS-NEXT: FileHeader:
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# NO-SECTIONS-NEXT: Class: ELFCLASS64
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# NO-SECTIONS-NEXT: Data: ELFDATA2LSB
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# NO-SECTIONS-NEXT: Type: ET_REL
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# NO-SECTIONS-NEXT: EShNum: 0x0
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## Note: yaml2obj will create the SHT_NULL section with sh_size = 0 implicitly.
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# NO-SECTIONS-NEXT: ...
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## In the test case below we have an object without a section header table and e_shnum == 0.
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## Document how we dump it.
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## FIXME: we should emit the `SectionHeaderTable` key with `NoHeaders=true` for this case.
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# RUN: yaml2obj %s -DESHOFF=0x0 -o %t3
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# RUN: obj2yaml %t3 | FileCheck %s --check-prefix=NO-HEADERS
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# NO-HEADERS: --- !ELF
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# NO-HEADERS-NEXT: FileHeader:
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# NO-HEADERS-NEXT: Class: ELFCLASS64
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# NO-HEADERS-NEXT: Data: ELFDATA2LSB
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# NO-HEADERS-NEXT: Type: ET_REL
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# NO-HEADERS-NEXT: ...
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