## In this test we check that can redefine the null section in the YAML.
## Test the default output first.
# RUN: yaml2obj --docnum=1 %s -o %t1
# RUN: llvm-readelf --sections %t1 | FileCheck %s --check-prefix=DEFAULT
# DEFAULT: Section Headers:
# DEFAULT-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# DEFAULT-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# DEFAULT-NEXT: [ 1] .strtab STRTAB 0000000000000000 000040 000001 00 0 0 1
# DEFAULT-NEXT: [ 2] .shstrtab STRTAB 0000000000000000 000041 000013 00 0 0 1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
## Now define a SHT_NULL section with fields all zeroed.
## In this case it is equal to the section created by default.
# RUN: yaml2obj --docnum=2 %s -o %t2
# RUN: llvm-readelf --sections %t2 | FileCheck %s --check-prefix=DEFAULT
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Name: ''
Flags: [ ]
AddressAlign: 0x0
Size: 0x0
EntSize: 0x0
Link: 0
Info: 0
Address: 0x0
## Check we can redefine fields of the first SHT_NULL section.
# RUN: yaml2obj --docnum=3 %s -o %t3
# RUN: llvm-readelf --sections %t3 | FileCheck %s --check-prefix=REDEF
# REDEF: Section Headers:
# REDEF-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# REDEF-NEXT: [ 0] .foo NULL 0000000000000006 000000 000002 03 A 4 5 1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Name: .foo
Flags: [ SHF_ALLOC ]
AddressAlign: 0x1
Size: 0x2
EntSize: 0x3
Link: 4
Info: 5
Address: 0x6
## Check that file size does not change if we redefine the Size
## of the first SHT_NULL section.
# RUN: yaml2obj --docnum=4 %s -o %t4
# RUN: wc -c < %t3 > %t.txt
# RUN: wc -c < %t4 >> %t.txt
# RUN: FileCheck %s --input-file=%t.txt --check-prefix=SIZE
# SIZE: [[FILESIZE:.*]]
# SIZE: [[FILESIZE]]
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Name: .foo
Flags: [ SHF_ALLOC ]
AddressAlign: 0x1
Size: 0xFFFF
EntSize: 0x3
Link: 4
Info: 5
Address: 0x6
## Check we are still able to describe other sections too.
# RUN: yaml2obj --docnum=5 %s -o %t5
# RUN: llvm-readelf --sections %t5 | FileCheck %s --check-prefix=OTHER-SECTION
# OTHER-SECTION: Section Headers:
# OTHER-SECTION-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# OTHER-SECTION-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# OTHER-SECTION-NEXT: [ 1] foo PROGBITS 0000000000000000 000040 000000 00 0 0 0
# OTHER-SECTION-NEXT: [ 2] .strtab STRTAB 0000000000000000 000040 000001 00 0 0 1
# OTHER-SECTION-NEXT: [ 3] .shstrtab STRTAB 0000000000000000 000041 000017 00 0 0 1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Name: ''
Flags: [ ]
AddressAlign: 0x0
Size: 0x0
EntSize: 0x0
Link: 0
- Type: SHT_PROGBITS
Name: 'foo'
## Check we report an error if null section sh_link field refers to an unknown section.
# RUN: not yaml2obj --docnum=6 %s -o %t6 2>&1 | FileCheck %s --check-prefix=CASE4
# CASE4: error: unknown section referenced: '.foo' by YAML section '(index 0)'
# CASE4-NEXT: error: unknown section referenced: '.bar' by YAML section '(index 1)'
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Link: .foo
- Type: SHT_NULL
Link: .bar
## Check that null section fields are set to zero, if they are unspecified.
# RUN: yaml2obj --docnum=7 %s -o %t7
# RUN: llvm-readelf --sections %t7 | FileCheck %s --check-prefix=DEFAULT
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
## Check we do not crash if we have more than one SHT_NULL section.
# RUN: yaml2obj --docnum=8 %s -o %t8
# RUN: llvm-readelf --sections %t8 | FileCheck %s --check-prefix=MULTIPLE
# MULTIPLE: Section Headers:
# MULTIPLE-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# MULTIPLE-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# MULTIPLE-NEXT: [ 1] .foo NULL 0000000000000123 000040 000020 10 A 1 2 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
- Type: SHT_NULL
Name: .foo
Flags: [ SHF_ALLOC ]
Size: 0x20
EntSize: 0x10
Link: 1
Info: 2
Address: 0x123
## Check we can override the sh_offset/sh_size fields of the first SHT_NULL section if requested.
# RUN: yaml2obj --docnum=9 %s -o %t9
# RUN: llvm-readelf --sections %t9 | FileCheck %s --check-prefix=OVERRIDE
# OVERRIDE: Section Headers:
# OVERRIDE-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# OVERRIDE-NEXT: [ 0] NULL 0000000000000000 000007 000008 00 0 0 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Size: 0x2
ShOffset: 0x7
ShSize: 0x8
## Check that we can set an offset for the SHT_NULL section explicitly using the "Offset" key.
## Check it affects the section header table offset.
# RUN: yaml2obj --docnum=10 %s -DOFFSET=0x100 -o %t10
# RUN: llvm-readelf --headers --sections %t10 | FileCheck %s --check-prefix=EXPLICIT-OFFSET-A
# RUN: yaml2obj --docnum=10 %s -DOFFSET=0x200 -o %t11
# RUN: llvm-readelf --headers --sections %t11 | FileCheck %s --check-prefix=EXPLICIT-OFFSET-B
# EXPLICIT-OFFSET-A: Start of section headers: 280 (bytes into file)
# EXPLICIT-OFFSET-A: [Nr] Name Type Address Off
# EXPLICIT-OFFSET-A-NEXT: [ 0] NULL 0000000000000000 000100
# EXPLICIT-OFFSET-B: Start of section headers: 536 (bytes into file)
# EXPLICIT-OFFSET-B: [Nr] Name Type Address Off
# EXPLICIT-OFFSET-B-NEXT: [ 0] NULL 0000000000000000 000200
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SHT_NULL
Offset: [[OFFSET]]
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