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llvm-project/llvm/test/tools/yaml2obj/ELF/note-section.yaml
Igor Kudrin ba373096e8
[ObjectYAML][ELF] Report incorrect offset to generate notes (#118741) 
All notes in the note section must be correctly aligned, including the
first. The tool should refuse to generate notes if the section offset is
incorrect in this respect.
2024-12-23 13:21:35 -08:00

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## Check how yaml2obj produces SHT_NOTE sections.
## Check we can describe SHT_NOTE using the "Notes" tag. We can define
## notes using names, descriptions and types.
## Check we produce a valid name size and description size fields.
## Check we produce valid paddings.
# RUN: yaml2obj --docnum=1 %s -o %t1
# RUN: llvm-readobj --sections --section-data %t1 | FileCheck %s --check-prefix=NOTE
# NOTE: Section {
# NOTE: Index: 1
# NOTE-NEXT: Name: .note.foo (1)
# NOTE-NEXT: Type: SHT_NOTE (0x7)
# NOTE-NEXT: Flags [ (0x2)
# NOTE-NEXT: SHF_ALLOC (0x2)
# NOTE-NEXT: ]
# NOTE-NEXT: Address:
# NOTE-NEXT: Offset:
# NOTE-NEXT: Size: 36
# NOTE-NEXT: Link: 0
# NOTE-NEXT: Info: 0
# NOTE-NEXT: AddressAlignment: 0
# NOTE-NEXT: EntrySize: 0
# NOTE-NEXT: SectionData (
## namesz == (0x03000000) == sizeof("AB") + NUL terminator.
## descsz == (0x00000000) for an empty description.
## Check we produce a valid 2 bytes zeroes padding after the Name.
# NOTE-NEXT: 0000: 03000000 00000000 FF000000 41420000 |............AB..|
## namesz == (0x04000000) == sizeof("ABC") + NUL terminator.
## descsz == (0x06000000) == sizeof("123456").
## Check we produce a valid (zero align to 4) 1 byte padding after the Name.
## Check we produce a valid (zero align to 4) 2 bytes padding after the Desc.
# NOTE-NEXT: 0010: 04000000 03000000 FE000000 41424300 |............ABC.|
# NOTE-NEXT: 0020: 12345600 |.4V.|
# NOTE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .note.foo
Type: SHT_NOTE
Flags: [ SHF_ALLOC ]
Notes:
- Name: AB
Desc: ''
Type: 0xFF
- Name: ABC
Desc: '123456'
Type: 254
## Check that for 32-bit little-endian case we produce the same section content.
# RUN: yaml2obj --docnum=2 %s -o %t2
# RUN: llvm-readobj --sections --section-data %t2 | FileCheck %s --check-prefix=NOTE
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .note.foo
Type: SHT_NOTE
Flags: [ SHF_ALLOC ]
Notes:
- Name: AB
Desc: ''
Type: 0xFF
- Name: ABC
Desc: '123456'
Type: 254
## Check big-endian 32/64 bit cases.
## Check they produce the same content.
# RUN: yaml2obj --docnum=3 %s -o %t3
# RUN: llvm-readobj --sections --section-data %t3 | FileCheck %s --check-prefix=NOTE-BE
# RUN: yaml2obj --docnum=4 %s -o %t4
# RUN: llvm-readobj --sections --section-data %t4 | FileCheck %s --check-prefix=NOTE-BE
# NOTE-BE: Name: .note.foo
# NOTE-BE: SectionData (
# NOTE-BE-NEXT: 0000: 00000004 00000003 000000FE 41424300 |
# NOTE-BE-NEXT: 0010: 12345600 |
# NOTE-BE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2MSB
Type: ET_REL
Sections:
- Name: .note.foo
Type: SHT_NOTE
Notes:
- Name: ABC
Desc: '123456'
Type: 254
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2MSB
Type: ET_REL
Sections:
- Name: .note.foo
Type: SHT_NOTE
Notes:
- Name: ABC
Desc: '123456'
Type: 254
## Check that 'Type' field is mandatory.
# RUN: not yaml2obj --docnum=5 %s 2>&1 | FileCheck %s --check-prefix=TYPE-REQ
# TYPE-REQ: error: missing required key 'Type'
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .note.foo
Type: SHT_NOTE
Notes:
- Name: ''
Desc: ''
## Check that neither `Name` nor `Desc` are mandatory fields.
# RUN: yaml2obj --docnum=6 %s -o %t6
# RUN: llvm-readobj --sections --section-data %t6 | FileCheck %s --check-prefix=NAME-DESC
# NAME-DESC: Name: .note.foo
# NAME-DESC: SectionData (
# NAME-DESC-NEXT: 0000: 00000000 00000000 FF000000 |
# NAME-DESC-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .note.foo
Type: SHT_NOTE
Notes:
- Type: 0xFF
## Check we can use the "Content" tag to specify any data for SHT_NOTE sections.
# RUN: yaml2obj --docnum=7 %s -o %t7
# RUN: llvm-readobj --sections --section-data %t7 | FileCheck %s --check-prefix=CONTENT
# CONTENT: Name: .note.foo
# CONTENT: SectionData (
# CONTENT-NEXT: 0000: 11223344 55 |
# CONTENT-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .note.foo
Type: SHT_NOTE
Content: "1122334455"
## Check we emit an empty section if neither "Content", "Size" nor "Notes" were set.
# RUN: yaml2obj --docnum=8 %s -o %t8
# RUN: llvm-readelf --sections %t8 | FileCheck %s --check-prefix=NO-TAGS
# NO-TAGS: [Nr] Name Type Address Off Size
# NO-TAGS: [ 1] .note.foo NOTE 0000000000000000 000040 000000
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .note.foo
Type: SHT_NOTE
## "Content" and "Notes" cannot be used together to describe the SHT_NOTE section.
# RUN: not yaml2obj --docnum=9 %s 2>&1 | FileCheck %s --check-prefix=CONTENT-NOTES
# CONTENT-NOTES: error: "Notes" cannot be used with "Content" or "Size"
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .note.foo
Type: SHT_NOTE
Content: ""
Notes: []
## "Size" and "Notes" cannot be used together to describe the SHT_NOTE section.
# RUN: not yaml2obj --docnum=10 %s 2>&1 | FileCheck %s --check-prefix=CONTENT-NOTES
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .note.foo
Type: SHT_NOTE
Size: 1
Notes: []
## Check we can use only "Size" to create a SHT_NOTE section.
# RUN: yaml2obj --docnum=11 %s -o %t11
# RUN: llvm-readobj --sections --section-data %t11 | FileCheck %s --check-prefix=SIZE
# SIZE: Name: .note.foo
# SIZE: SectionData (
# SIZE-NEXT: 0000: 00000000 00000000 00000000 00000000 |
# SIZE-NEXT: 0010: 00 |
# SIZE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note.foo
Type: SHT_NOTE
Size: 0x11
## Check we can use "Size" and "Content" together to create a SHT_NOTE section.
# RUN: yaml2obj --docnum=12 %s -o %t12
# RUN: llvm-readobj --sections --section-data %t12 | FileCheck %s --check-prefix=SIZE-CONTENT
# SIZE-CONTENT: Name: .note.sizegr
# SIZE-CONTENT: SectionData (
# SIZE-CONTENT-NEXT: 0000: 11223300 00 |
# SIZE-CONTENT-NEXT: )
# SIZE-CONTENT: Name: .note.sizeeq
# SIZE-CONTENT: SectionData (
# SIZE-CONTENT-NEXT: 0000: 112233 |
# SIZE-CONTENT-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note.sizegr
Type: SHT_NOTE
Size: 0x5
Content: "112233"
- Name: .note.sizeeq
Type: SHT_NOTE
Size: 0x3
Content: "112233"
## Check that when "Size" and "Content" are used together, the size
## must be greater than or equal to the content size.
# RUN: not yaml2obj --docnum=13 %s 2>&1 | FileCheck %s --check-prefix=SIZE-CONTENT-ERR
# SIZE-CONTENT-ERR: error: Section size must be greater than or equal to the content size
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note
Type: SHT_NOTE
Size: 0x1
Content: "1122"
## Check we can't use "Size" and "Notes" tags together.
# RUN: not yaml2obj --docnum=14 %s 2>&1 | FileCheck %s --check-prefix=CONTENT-NOTES
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note
Type: SHT_NOTE
Size: 0x1
Notes: []
## Check that we can use NT_* names for the note type.
# RUN: yaml2obj --docnum=15 %s -o %t15
# RUN: llvm-readobj --sections --section-data %t15 | FileCheck %s --check-prefix=TEXTUAL-TYPE
# TEXTUAL-TYPE: Name: .note.foo
# TEXTUAL-TYPE: SectionData (
# TEXTUAL-TYPE-NEXT: 0000: 03000000 00000000 03000000 41420000 |............AB..|
# TEXTUAL-TYPE-NEXT: 0010: 04000000 03000000 01000000 41424300 |............ABC.|
# TEXTUAL-TYPE-NEXT: 0020: 12345600 |.4V.|
# TEXTUAL-TYPE-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note.foo
Type: SHT_NOTE
Flags: [ SHF_ALLOC ]
Notes:
- Name: AB
Desc: ''
Type: NT_GNU_BUILD_ID
- Name: ABC
Desc: '123456'
Type: NT_VERSION
## Check that an incorrect alignment is reported.
# RUN: not yaml2obj --docnum=16 %s 2>&1 | FileCheck %s --check-prefix=ERR_ALIGN1
# ERR_ALIGN1: error: .note.foo: invalid alignment for a note section: 0x1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note.foo
Type: SHT_NOTE
AddressAlign: 1
Notes:
- Type: 0x1
## Check that note entries and their "Desc" fields are aligned according to the
## specified section alignment.
# RUN: yaml2obj --docnum=17 -D ELFCLASS=64 %s -o - | \
# RUN: llvm-readobj --sections --section-data --notes - | \
# RUN: FileCheck %s --check-prefix=TEST17
# RUN: yaml2obj --docnum=17 -D ELFCLASS=32 %s -o - | \
# RUN: llvm-readobj --sections --section-data --notes - | \
# RUN: FileCheck %s --check-prefix=TEST17
# TEST17: Name: .note.foo4
# TEST17: SectionData (
# TEST17-NEXT: 0000: 05000000 02000000 01000000 41424344 |............ABCD|
# TEST17-NEXT: 0010: 00000000 01020000 00000000 03000000 |................|
# TEST17-NEXT: 0020: 02000000 03040500 04000000 00000000 |................|
# TEST17-NEXT: 0030: 03000000 474E5500 |....GNU.|
# TEST17-NEXT: )
# TEST17: Name: .note.foo8
# TEST17: SectionData (
# TEST17-NEXT: 0000: 05000000 02000000 01000000 41424344 |............ABCD|
# TEST17-NEXT: 0010: 00000000 00000000 01020000 00000000 |................|
# TEST17-NEXT: 0020: 00000000 03000000 02000000 00000000 |................|
# TEST17-NEXT: 0030: 03040500 00000000 04000000 00000000 |................|
# TEST17-NEXT: 0040: 03000000 474E5500 |....GNU.|
# TEST17-NEXT: )
# TEST17: NoteSections [
# TEST17-NEXT: NoteSection {
# TEST17-NEXT: Name: .note.foo4
# TEST17-NEXT: Offset:
# TEST17-NEXT: Size:
# TEST17-NEXT: Notes [
# TEST17-NEXT: {
# TEST17-NEXT: Owner: ABCD
# TEST17-NEXT: Data size: 0x2
# TEST17-NEXT: Type: NT_VERSION (version)
# TEST17-NEXT: Description data (
# TEST17-NEXT: 0000: 0102 |..|
# TEST17-NEXT: )
# TEST17-NEXT: }
# TEST17-NEXT: {
# TEST17-NEXT: Owner:
# TEST17-NEXT: Data size: 0x3
# TEST17-NEXT: Type: NT_ARCH (architecture)
# TEST17-NEXT: Description data (
# TEST17-NEXT: 0000: 030405 |...|
# TEST17-NEXT: )
# TEST17-NEXT: }
# TEST17-NEXT: {
# TEST17-NEXT: Owner: GNU
# TEST17-NEXT: Data size: 0x0
# TEST17-NEXT: Type: NT_GNU_BUILD_ID (unique build ID bitstring)
# TEST17-NEXT: Build ID:
# TEST17-NEXT: }
# TEST17-NEXT: ]
# TEST17-NEXT: }
# TEST17-NEXT: NoteSection {
# TEST17-NEXT: Name: .note.foo8
# TEST17-NEXT: Offset:
# TEST17-NEXT: Size:
# TEST17-NEXT: Notes [
# TEST17-NEXT: {
# TEST17-NEXT: Owner: ABCD
# TEST17-NEXT: Data size: 0x2
# TEST17-NEXT: Type: NT_VERSION (version)
# TEST17-NEXT: Description data (
# TEST17-NEXT: 0000: 0102 |..|
# TEST17-NEXT: )
# TEST17-NEXT: }
# TEST17-NEXT: {
# TEST17-NEXT: Owner:
# TEST17-NEXT: Data size: 0x3
# TEST17-NEXT: Type: NT_ARCH (architecture)
# TEST17-NEXT: Description data (
# TEST17-NEXT: 0000: 030405 |...|
# TEST17-NEXT: )
# TEST17-NEXT: }
# TEST17-NEXT: {
# TEST17-NEXT: Owner: GNU
# TEST17-NEXT: Data size: 0x0
# TEST17-NEXT: Type: NT_GNU_BUILD_ID (unique build ID bitstring)
# TEST17-NEXT: Build ID:
# TEST17-NEXT: }
# TEST17-NEXT: ]
# TEST17-NEXT: }
# TEST17-NEXT: ]
--- !ELF
FileHeader:
Class: ELFCLASS[[ELFCLASS]]
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note.foo4
Type: SHT_NOTE
AddressAlign: 4
Notes:
- Name: ABCD
Type: NT_VERSION
Desc: 0102
- Type: NT_ARCH
Desc: 030405
- Name: GNU
Type: NT_GNU_BUILD_ID
- Name: .note.foo8
Type: SHT_NOTE
AddressAlign: 8
Notes:
- Name: ABCD
Type: NT_VERSION
Desc: 0102
- Type: NT_ARCH
Desc: 030405
- Name: GNU
Type: NT_GNU_BUILD_ID
## Check that the alignment for note entries is taken from the "AddressAlign"
## field even if "ShAddrAlign" is also specified; an unexpected value in the
## "ShAddrAlign" property does not trigger an incorrect alignment error.
# RUN: yaml2obj --docnum=18 -D ADDRALIGN=0 -D SHADDRALIGN=8 %s -o - | \
# RUN: llvm-readobj --sections --section-data --notes - | \
# RUN: FileCheck %s --check-prefixes=TEST18,TEST18_4
# RUN: yaml2obj --docnum=18 -D ADDRALIGN=4 -D SHADDRALIGN=3 %s -o - | \
# RUN: llvm-readobj --sections --section-data --notes - | \
# RUN: FileCheck %s --check-prefixes=TEST18,TEST18_4
# RUN: yaml2obj --docnum=18 -D ADDRALIGN=8 -D SHADDRALIGN=4 %s -o - | \
# RUN: llvm-readobj --sections --section-data --notes - | \
# RUN: FileCheck %s --check-prefixes=TEST18,TEST18_8
# TEST18: Name: .note
# TEST18: SectionData (
# TEST18_4-NEXT: 0000: 05000000 02000000 01000000 41424344 |............ABCD|
# TEST18_4-NEXT: 0010: 00000000 01020000 00000000 03000000 |................|
# TEST18_4-NEXT: 0020: 02000000 03040500 04000000 00000000 |................|
# TEST18_4-NEXT: 0030: 03000000 474E5500 |....GNU.|
# TEST18_8-NEXT: 0000: 05000000 02000000 01000000 41424344 |............ABCD|
# TEST18_8-NEXT: 0010: 00000000 00000000 01020000 00000000 |................|
# TEST18_8-NEXT: 0020: 00000000 03000000 02000000 00000000 |................|
# TEST18_8-NEXT: 0030: 03040500 00000000 04000000 00000000 |................|
# TEST18_8-NEXT: 0040: 03000000 474E5500 |....GNU.|
# TEST18-NEXT: )
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note
Type: SHT_NOTE
AddressAlign: [[ADDRALIGN]]
ShAddrAlign: [[SHADDRALIGN]]
Notes:
- Name: ABCD
Type: NT_VERSION
Desc: 0102
- Type: NT_ARCH
Desc: 030405
- Name: GNU
Type: NT_GNU_BUILD_ID
## Check that an incorrect offset for generating notes is reported.
# RUN: not yaml2obj --docnum=19 %s 2>&1 | FileCheck %s --check-prefix=ERR_OFFSET
# ERR_OFFSET: error: .note: invalid offset of a note section: 0x501, should be aligned to 4
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note
Type: SHT_NOTE
Offset: 0x501
Notes:
- Type: 0x1
## Do not issue an error if the notes array is empty.
# RUN: yaml2obj --docnum=20 %s -o - | \
# RUN: llvm-readobj --sections --section-data - | \
# RUN: FileCheck %s --check-prefix=TEST20
# TEST20: Section {
# TEST20: Name: .note
# TEST20-NEXT: Type: SHT_NOTE
# TEST20-NEXT: Flags [ (0x0)
# TEST20-NEXT: ]
# TEST20-NEXT: Address:
# TEST20-NEXT: Offset: 0x501
# TEST20-NEXT: Size: 0
# TEST20-NEXT: Link:
# TEST20-NEXT: Info:
# TEST20-NEXT: AddressAlignment: 5
# TEST20-NEXT: EntrySize:
# TEST20-NEXT: SectionData (
# TEST20-NEXT: )
# TEST20-NEXT: }
--- !ELF
FileHeader:
Class: ELFCLASS32
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .note
Type: SHT_NOTE
Offset: 0x501
AddressAlign: 5
Notes: []
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