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147 lines
4.8 KiB
YAML
147 lines
4.8 KiB
YAML
## Check how obj2yaml produces SHT_GNU_HASH section descriptions.
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## Check that obj2yaml uses "Header", "BloomFilter", "HashBuckets" and "HashValues"
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## tags to describe a SHT_GNU_HASH section when it has content of a correct size.
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# RUN: yaml2obj --docnum=1 %s -o %t1
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# RUN: obj2yaml %t1 | FileCheck %s --check-prefix=FIELDS
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# FIELDS: - Name: .gnu.hash
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# FIELDS-NEXT: Type: SHT_GNU_HASH
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# FIELDS-NEXT: Flags: [ SHF_ALLOC ]
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# FIELDS-NEXT: Header:
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# FIELDS-NEXT: SymNdx: 0x1
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# FIELDS-NEXT: Shift2: 0x2
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# FIELDS-NEXT: BloomFilter: [ 0x3, 0x4 ]
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# FIELDS-NEXT: HashBuckets: [ 0x5, 0x6, 0x7 ]
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# FIELDS-NEXT: HashValues: [ 0x8, 0x9, 0xA, 0xB ]
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_DYN
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Sections:
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- Name: .gnu.hash
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Type: SHT_GNU_HASH
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Flags: [ SHF_ALLOC ]
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Header:
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SymNdx: 0x1
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Shift2: 0x2
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BloomFilter: [0x3, 0x4]
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HashBuckets: [0x5, 0x6, 0x7]
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HashValues: [0x8, 0x9, 0xA, 0xB]
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## Check how we handle broken cases.
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# RUN: yaml2obj --docnum=2 %s -o %t2
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# RUN: obj2yaml %t2 | FileCheck %s --check-prefix=INVALID
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# INVALID: - Name: .gnu.hash.tooshort
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Flags: [ SHF_ALLOC ]
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# INVALID-NEXT: Content: 112233445566778899AABBCCDDEEFF
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# INVALID-NEXT: - Name: .gnu.hash.empty
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Flags: [ SHF_ALLOC ]
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# INVALID-NEXT: Address: 0xF
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# INVALID-NEXT: Header:
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# INVALID-NEXT: SymNdx: 0x0
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# INVALID-NEXT: Shift2: 0x0
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# INVALID-NEXT: BloomFilter: [ ]
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# INVALID-NEXT: HashBuckets: [ ]
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# INVALID-NEXT: HashValues: [ ]
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# INVALID-NEXT: - Name: .gnu.hash.broken.maskwords
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Content: '00000000000000000100000000000000'
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# INVALID-NEXT: - Name: .gnu.hash.broken.nbuckets.a
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Content: '01000000000000000000000000000000'
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# INVALID-NEXT: - Name: .gnu.hash.broken.nbuckets.b
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Content: FFFFFFFF000000000100000000000000{{$}}
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# INVALID-NEXT: - Name: .gnu.hash.hashvalues.ok
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Header:
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# INVALID-NEXT: SymNdx: 0x0
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# INVALID-NEXT: Shift2: 0x0
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# INVALID-NEXT: BloomFilter: [ ]
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# INVALID-NEXT: HashBuckets: [ ]
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# INVALID-NEXT: HashValues: [ 0x0 ]
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# INVALID-NEXT: - Name: .gnu.hash.hashvalues.fail
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# INVALID-NEXT: Type: SHT_GNU_HASH
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# INVALID-NEXT: Content: '000000000000000000000000000000000000000000'
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--- !ELF
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FileHeader:
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Class: ELFCLASS32
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Data: ELFDATA2LSB
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Type: ET_DYN
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Sections:
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## Case 1: Content is less than 16 bytes.
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- Name: .gnu.hash.tooshort
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Type: SHT_GNU_HASH
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Flags: [ SHF_ALLOC ]
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Content: "112233445566778899AABBCCDDEEFF"
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## Case2: Check how we handle a fully empty hash section.
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## It is almost technically valid, but uncommon. Modern linkers
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## create at least one entry in Bloom filter if they want to disable it.
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## Also, the dynamic symbol table has a null entry and having SymNdx = 0
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## here is at least strange.
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- Name: .gnu.hash.empty
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Type: SHT_GNU_HASH
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Flags: [ SHF_ALLOC ]
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Header:
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SymNdx: 0x0
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Shift2: 0x0
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MaskWords: 0x0
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NBuckets: 0x0
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BloomFilter: []
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HashBuckets: []
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HashValues: []
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## Case 3: MaskWords field is broken: it says that the number of entries
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## in the Bloom filter is 1, but the Bloom filter is empty.
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- Name: .gnu.hash.broken.maskwords
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Type: SHT_GNU_HASH
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Header:
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SymNdx: 0x0
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Shift2: 0x0
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MaskWords: 0x1
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NBuckets: 0x0
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BloomFilter: []
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HashBuckets: []
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HashValues: []
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## Case 4(a): NBuckets field is broken, it says that the number of entries
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## in the hash buckets is 1, but it is empty.
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- Name: .gnu.hash.broken.nbuckets.a
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Type: SHT_GNU_HASH
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Header:
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SymNdx: 0x0
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Shift2: 0x0
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MaskWords: 0x0
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NBuckets: 0x1
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BloomFilter: []
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HashBuckets: []
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HashValues: []
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## Case 4(b): NBuckets = 0xFFFFFFFF is incorrect. The result will cause 32-bit
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## unsigned overflows if we keep intermediate expressions uint32_t.
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- Name: .gnu.hash.broken.nbuckets.b
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Type: SHT_GNU_HASH
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Header:
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SymNdx: 0x0
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Shift2: 0x0
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MaskWords: 0x1
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NBuckets: 0xFFFFFFFF
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BloomFilter: []
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HashBuckets: []
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HashValues: []
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## Case 5: Check that we use the various properties to dump the data when it
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## has a size that is a multiple of 4, but fallback to dumping the whole section
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## using the "Content" property otherwise.
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- Name: .gnu.hash.hashvalues.ok
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Type: SHT_GNU_HASH
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Content: "0000000000000000000000000000000000000000"
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- Name: .gnu.hash.hashvalues.fail
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Type: SHT_GNU_HASH
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Content: "000000000000000000000000000000000000000000"
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