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222 lines
6.3 KiB
222 lines
6.3 KiB
4 months ago
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## In this test we check that can redefine the null section in the YAML.
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## Test the default output first.
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# RUN: yaml2obj --docnum=1 %s -o %t1
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# RUN: llvm-readelf --sections %t1 | FileCheck %s --check-prefix=DEFAULT
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# DEFAULT: Section Headers:
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# DEFAULT-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# DEFAULT-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
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# DEFAULT-NEXT: [ 1] .strtab STRTAB 0000000000000000 000040 000001 00 0 0 1
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# DEFAULT-NEXT: [ 2] .shstrtab STRTAB 0000000000000000 000041 000013 00 0 0 1
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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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## Now define a SHT_NULL section with fields all zeroed.
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## In this case it is equal to the section created by default.
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# RUN: yaml2obj --docnum=2 %s -o %t2
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# RUN: llvm-readelf --sections %t2 | FileCheck %s --check-prefix=DEFAULT
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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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Sections:
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- Type: SHT_NULL
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Name: ''
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Flags: [ ]
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AddressAlign: 0x0
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Size: 0x0
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EntSize: 0x0
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Link: 0
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Info: 0
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Address: 0x0
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## Check we can redefine fields of the first SHT_NULL section.
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# RUN: yaml2obj --docnum=3 %s -o %t3
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# RUN: llvm-readelf --sections %t3 | FileCheck %s --check-prefix=REDEFINE
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# REDEFINE: Section Headers:
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# REDEFINE-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# REDEFINE-NEXT: [ 0] .foo NULL 0000000000000006 000000 000002 03 A 4 5 1
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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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Sections:
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- Type: SHT_NULL
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Name: .foo
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Flags: [ SHF_ALLOC ]
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AddressAlign: 0x1
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Size: 0x2
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EntSize: 0x3
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Link: 4
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Info: 5
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Address: 0x6
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## Check that file size does not change if we redefine the Size
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## of the first SHT_NULL section.
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# RUN: yaml2obj --docnum=4 %s -o %t4
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# RUN: wc -c < %t3 > %t.txt
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# RUN: wc -c < %t4 >> %t.txt
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# RUN: FileCheck %s --input-file=%t.txt --check-prefix=SIZE
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# SIZE: [[FILESIZE:.*]]
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# SIZE: [[FILESIZE]]
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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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Sections:
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- Type: SHT_NULL
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Name: .foo
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Flags: [ SHF_ALLOC ]
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AddressAlign: 0x1
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Size: 0xFFFF
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EntSize: 0x3
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Link: 4
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Info: 5
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Address: 0x6
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## Check we are still able to describe other sections too.
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# RUN: yaml2obj --docnum=5 %s -o %t5
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# RUN: llvm-readelf --sections %t5 | FileCheck %s --check-prefix=OTHER-SECTION
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# OTHER-SECTION: Section Headers:
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# OTHER-SECTION-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# OTHER-SECTION-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
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# OTHER-SECTION-NEXT: [ 1] foo PROGBITS 0000000000000000 000040 000000 00 0 0 0
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# OTHER-SECTION-NEXT: [ 2] .strtab STRTAB 0000000000000000 000040 000001 00 0 0 1
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# OTHER-SECTION-NEXT: [ 3] .shstrtab STRTAB 0000000000000000 000041 000017 00 0 0 1
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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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Sections:
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- Type: SHT_NULL
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Name: ''
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Flags: [ ]
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AddressAlign: 0x0
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Size: 0x0
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EntSize: 0x0
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Link: 0
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- Type: SHT_PROGBITS
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Name: 'foo'
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## Check we report an error if null section sh_link field refers to an unknown section.
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# RUN: not yaml2obj --docnum=6 %s -o %t6 2>&1 | FileCheck %s --check-prefix=CASE4
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# CASE4: error: unknown section referenced: '.foo' by YAML section '(index 0)'
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# CASE4-NEXT: error: unknown section referenced: '.bar' by YAML section '(index 1)'
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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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Sections:
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- Type: SHT_NULL
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Link: .foo
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- Type: SHT_NULL
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Link: .bar
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## Check that null section fields are set to zero, if they are unspecified.
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# RUN: yaml2obj --docnum=7 %s -o %t7
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# RUN: llvm-readelf --sections %t7 | FileCheck %s --check-prefix=DEFAULT
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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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Sections:
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- Type: SHT_NULL
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## Check we do not crash if we have more than one SHT_NULL section.
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# RUN: yaml2obj --docnum=8 %s -o %t8
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# RUN: llvm-readelf --sections %t8 | FileCheck %s --check-prefix=MULTIPLE
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# MULTIPLE: Section Headers:
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# MULTIPLE-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# MULTIPLE-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
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# MULTIPLE-NEXT: [ 1] .foo NULL 0000000000000123 000040 000020 10 A 1 2 0
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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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Sections:
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- Type: SHT_NULL
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- Type: SHT_NULL
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Name: .foo
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Flags: [ SHF_ALLOC ]
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Size: 0x20
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EntSize: 0x10
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Link: 1
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Info: 2
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Address: 0x123
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## Check we can override the sh_offset/sh_size fields of the first SHT_NULL section if requested.
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# RUN: yaml2obj --docnum=9 %s -o %t9
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# RUN: llvm-readelf --sections %t9 | FileCheck %s --check-prefix=OVERRIDE
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# OVERRIDE: Section Headers:
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# OVERRIDE-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
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# OVERRIDE-NEXT: [ 0] NULL 0000000000000000 000007 000008 00 0 0 0
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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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Sections:
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- Type: SHT_NULL
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Size: 0x2
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ShOffset: 0x7
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ShSize: 0x8
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## Check that we can set an offset for the SHT_NULL section explicitly using the "Offset" key.
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## Check it affects the section header table offset.
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# RUN: yaml2obj --docnum=10 %s -DOFFSET=0x100 -o %t10
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# RUN: llvm-readelf --headers --sections %t10 | FileCheck %s --check-prefix=EXPLICIT-OFFSET-A
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# RUN: yaml2obj --docnum=10 %s -DOFFSET=0x200 -o %t11
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# RUN: llvm-readelf --headers --sections %t11 | FileCheck %s --check-prefix=EXPLICIT-OFFSET-B
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# EXPLICIT-OFFSET-A: Start of section headers: 280 (bytes into file)
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# EXPLICIT-OFFSET-A: [Nr] Name Type Address Off
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# EXPLICIT-OFFSET-A-NEXT: [ 0] NULL 0000000000000000 000100
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# EXPLICIT-OFFSET-B: Start of section headers: 536 (bytes into file)
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# EXPLICIT-OFFSET-B: [Nr] Name Type Address Off
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# EXPLICIT-OFFSET-B-NEXT: [ 0] NULL 0000000000000000 000200
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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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Sections:
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- Type: SHT_NULL
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Offset: [[OFFSET]]
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