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llvm-for-llvmta/test/tools/yaml2obj/ELF/section-headers.yaml

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2022-04-25 10:02:23 +02:00
## Check we can use "SectionHeaderTable" tag to reorder section header entries.
## This is a general test that has sections with unique prefixes, a fill and a
## section without the unique prefix. The section header table describes sections
## in the same order they are listed in the YAML.
# RUN: yaml2obj %s --docnum=1 -o %t1 -DSEC1=".section (1)" -DSEC2=".section (2)" -DSEC3=".section.foo"
# RUN: llvm-readelf --section-headers %t1 | FileCheck %s --check-prefix=NO-OP
# NO-OP: Section Headers:
# NO-OP-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# NO-OP-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# NO-OP-NEXT: [ 1] .section PROGBITS 0000000000000000 000040 000010 00 0 0 0
# NO-OP-NEXT: [ 2] .section PROGBITS 0000000000000000 000050 000020 00 0 0 0
# NO-OP-NEXT: [ 3] .section.foo PROGBITS 0000000000000000 0000a0 000040 00 0 0 0
# NO-OP-NEXT: [ 4] .strtab STRTAB 0000000000000000 0000e0 000001 00 0 0 1
# NO-OP-NEXT: [ 5] .shstrtab STRTAB 0000000000000000 0000e1 000029 00 0 0 1
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .section (1)
Type: SHT_PROGBITS
Size: 0x10
- Name: .section (2)
Type: SHT_PROGBITS
Size: 0x20
- Type: Fill
Name: .filler
Size: 0x30
Pattern: ""
- Name: .section.foo
Type: SHT_PROGBITS
Size: 0x40
- Type: SectionHeaderTable
Sections:
- Name: [[SEC1]]
- Name: [[SEC2]]
- Name: [[SEC3]]
- Name: .strtab
- Name: .shstrtab
## Show we are able to reorder sections.
# RUN: yaml2obj %s -o %t2 -DSEC3=".section (1)" -DSEC2=".section (2)" -DSEC1=".section.foo"
# RUN: llvm-readelf --section-headers %t2 | FileCheck %s --check-prefix=REORDERED
# REORDERED: Section Headers:
# REORDERED-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# REORDERED-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# REORDERED-NEXT: [ 1] .section.foo PROGBITS 0000000000000000 0000a0 000040 00 0 0 0
# REORDERED-NEXT: [ 2] .section PROGBITS 0000000000000000 000050 000020 00 0 0 0
# REORDERED-NEXT: [ 3] .section PROGBITS 0000000000000000 000040 000010 00 0 0 0
# REORDERED-NEXT: [ 4] .strtab STRTAB 0000000000000000 0000e0 000001 00 0 0 1
# REORDERED-NEXT: [ 5] .shstrtab STRTAB 0000000000000000 0000e1 000029 00 0 0 1
## Show we report proper errors when the section header description:
## a) contains a repeated section name.
## b) omits any section that exists.
## c) contains a non-existent section.
# RUN: not yaml2obj %s -o /dev/null -DSEC1=".section.foo" -DSEC2="unknown" -DSEC3=".section.foo" 2>&1 | \
# RUN: FileCheck %s --check-prefix=ERR1
# d) contains a repeated implicit section name.
# e) contains a fill name.
# RUN: not yaml2obj %s -o /dev/null -DSEC1=".strtab" -DSEC2=".shstrtab" -DSEC3=".filler" 2>&1 | \
# RUN: FileCheck %s --check-prefix=ERR2
# ERR1: error: repeated section name: '.section.foo' in the section header description
# ERR1-NEXT: error: section '.section (1)' should be present in the 'Sections' or 'Excluded' lists
# ERR1-NEXT: error: section '.section (2)' should be present in the 'Sections' or 'Excluded' lists
# ERR1-NEXT: error: section header contains undefined section 'unknown'
# ERR2: error: repeated section name: '.strtab' in the section header description
# ERR2-NEXT: error: repeated section name: '.shstrtab' in the section header description
# ERR2-NEXT: error: section '.section (1)' should be present in the 'Sections' or 'Excluded' lists
# ERR2-NEXT: error: section '.section (2)' should be present in the 'Sections' or 'Excluded' lists
# ERR2-NEXT: error: section '.section.foo' should be present in the 'Sections' or 'Excluded' lists
# ERR2-NEXT: error: section header contains undefined section '.filler'
## Check that when the an empty "Sections" list is used, we do not create an empty section header table.
# RUN: not yaml2obj %s --docnum=2 -o /dev/null 2>&1 | FileCheck %s --check-prefix=EMPTY-SECTIONS
# EMPTY-SECTIONS: error: section '.foo' should be present in the 'Sections' or 'Excluded' lists
# EMPTY-SECTIONS-NEXT: error: section '.strtab' should be present in the 'Sections' or 'Excluded' lists
# EMPTY-SECTIONS-NEXT: error: section '.shstrtab' should be present in the 'Sections' or 'Excluded' lists
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections: []
## Test that we are able to use "NoHeaders" property to produce an empty section header table.
# RUN: yaml2obj %s --docnum=3 -DNOHEADERS=true -o %t3.1
# RUN: llvm-readelf --file-headers %t3.1 | FileCheck %s --check-prefix=NO-HEADERS-TRUE
# NO-HEADERS-TRUE: Start of section headers: 0 (bytes into file)
# NO-HEADERS-TRUE: Size of section headers: 64 (bytes)
# NO-HEADERS-TRUE: Number of section headers: 0
# NO-HEADERS-TRUE: Section header string table index: 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
NoHeaders: [[NOHEADERS]]
## Test that we are able to set NoHeaders to false. In this case the tool produces an output
## as if there were no `SectionHeaderTable` key at all.
# RUN: yaml2obj %s --docnum=3 -DNOHEADERS=false -o %t3.2
# RUN: llvm-readelf --file-headers --sections %t3.2 | FileCheck %s --check-prefix=NO-HEADERS-FALSE
# NO-HEADERS-FALSE: Start of section headers: 96 (bytes into file)
# NO-HEADERS-FALSE: Size of section headers: 64 (bytes)
# NO-HEADERS-FALSE: Number of section headers: 4
# NO-HEADERS-FALSE: Section header string table index: 3
# NO-HEADERS-FALSE: Section Headers:
# NO-HEADERS-FALSE-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# NO-HEADERS-FALSE-NEXT: [ 0] NULL 0000000000000000 000000 000000 00 0 0 0
# NO-HEADERS-FALSE-NEXT: [ 1] .foo PROGBITS 0000000000000000 000040 000000 00 0 0 0
# NO-HEADERS-FALSE-NEXT: [ 2] .strtab STRTAB 0000000000000000 000040 000001 00 0 0 1
# NO-HEADERS-FALSE-NEXT: [ 3] .shstrtab STRTAB 0000000000000000 000041 000018 00 0 0 1
## Check we do not allow using "Sections" together with "NoHeaders".
# RUN: not yaml2obj %s --docnum=4 -DNOHEADERS=true -o /dev/null 2>&1 | FileCheck %s --check-prefix=SECTIONS-NO-HEADERS
# RUN: not yaml2obj %s --docnum=4 -DNOHEADERS=false -o /dev/null 2>&1 | FileCheck %s --check-prefix=SECTIONS-NO-HEADERS
# SECTIONS-NO-HEADERS: error: NoHeaders can't be used together with Offset/Sections/Excluded
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections: []
NoHeaders: [[NOHEADERS]]
## Check that we do not allow an empty SectionHeaderTable tag and suggest to use an explicit syntax instead.
# RUN: not yaml2obj %s --docnum=5 -o /dev/null 2>&1 | FileCheck %s --check-prefix=NO-VALUE
# NO-VALUE: SectionHeaderTable can't be empty. Use 'NoHeaders' key to drop the section header table
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
## Test that we are still able to override e_shoff, e_shnum and e_shstrndx
## fields even when we do not produce section headers.
# RUN: yaml2obj %s --docnum=6 -o %t4
# RUN: not llvm-readelf --file-headers %t4 | FileCheck %s --check-prefix=NO-HEADERS-OVERRIDE
# NO-HEADERS-OVERRIDE: Start of section headers: 2 (bytes into file)
# NO-HEADERS-OVERRIDE: Number of section headers: 3
# NO-HEADERS-OVERRIDE: Section header string table index: 4
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
EShOff: 0x2
EShNum: 0x3
EShStrNdx: 0x4
Sections:
- Type: SectionHeaderTable
NoHeaders: true
## Check that section indices are updated properly in other places when we
## reorder sections in the section header table.
# RUN: yaml2obj %s --docnum=7 -o %t5 -DSEC1=".foo" -DSEC2=".bar"
# RUN: llvm-readelf --section-headers --symbols %t5 | FileCheck %s --check-prefix=INDICES-A
# RUN: yaml2obj %s --docnum=7 -o %t6 -DSEC2=".foo" -DSEC1=".bar"
# RUN: llvm-readelf --section-headers --symbols %t6 | FileCheck %s --check-prefix=INDICES-B
# INDICES-A: [Nr] Name Type Address Off Size ES Flg Lk
# INDICES-A: [ 1] .foo PROGBITS 0000000000000000 000040 000000 00 0
# INDICES-A-NEXT: [ 2] .bar PROGBITS 0000000000000000 000040 000000 00 0
# INDICES-A-NEXT: [ 3] .another.1 PROGBITS 0000000000000000 000040 000000 00 1
# INDICES-A-NEXT: [ 4] .another.2 PROGBITS 0000000000000000 000040 000000 00 2
# INDICES-A: Num: Value Size Type Bind Vis Ndx Name
# INDICES-A: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT 1 foo
# INDICES-A-NEXT: 2: 0000000000000000 0 NOTYPE LOCAL DEFAULT 2 bar
# INDICES-B: [ 1] .bar PROGBITS 0000000000000000 000040 000000 00 0
# INDICES-B-NEXT: [ 2] .foo PROGBITS 0000000000000000 000040 000000 00 0
# INDICES-B-NEXT: [ 3] .another.1 PROGBITS 0000000000000000 000040 000000 00 2
# INDICES-B-NEXT: [ 4] .another.2 PROGBITS 0000000000000000 000040 000000 00 1
# INDICES-B: Num: Value Size Type Bind Vis Ndx Name
# INDICES-B: 1: 0000000000000000 0 NOTYPE LOCAL DEFAULT 2 foo
# INDICES-B-NEXT: 2: 0000000000000000 0 NOTYPE LOCAL DEFAULT 1 bar
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Name: .bar
Type: SHT_PROGBITS
- Name: .another.1
Link: .foo
Type: SHT_PROGBITS
- Name: .another.2
Link: .bar
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: [[SEC1]]
- Name: [[SEC2]]
- Name: .another.1
- Name: .another.2
- Name: .symtab
- Name: .strtab
- Name: .shstrtab
Symbols:
- Name: foo
Section: .foo
- Name: bar
Section: .bar
## Check that when "NoHeaders" is set to "true" then we don't emit
## the .shstrtab section implicitly and don't write the data of the
## section header table to the file.
# RUN: yaml2obj %s --docnum=8 -o %t8
# RUN: wc -c < %t8 | FileCheck %s --check-prefix=SIZE
# SIZE: 511{{$}}
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
## We don't want any implicit sections to be added after the .foo section,
## so add them here explicitly.
- Name: .strtab
Type: SHT_STRTAB
## Nothing should be emitted after the following section.
## So we know that the expected file size is 0x100 + 0xFF == 0x1FF == 511.
- Name: .foo
Type: SHT_PROGBITS
## Unaligned size. Used to make sure that we don't try to align the file offset
## for writing the section header table.
Size: 0xFF
Offset: 0x100
- Type: SectionHeaderTable
NoHeaders: true
## Check we do not allow using "Offset" together with "NoHeaders".
# RUN: not yaml2obj %s --docnum=9 -DNOHEADERS=true -o /dev/null 2>&1 | FileCheck %s --check-prefix=NO-HEADERS-OFFSET
# RUN: not yaml2obj %s --docnum=9 -DNOHEADERS=false -o /dev/null 2>&1 | FileCheck %s --check-prefix=NO-HEADERS-OFFSET
# NO-HEADERS-OFFSET: error: NoHeaders can't be used together with Offset/Sections/Excluded
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Offset: 0x1000
NoHeaders: [[NOHEADERS]]
## Check we can place the section header table before other sections.
# RUN: yaml2obj %s --docnum=10 -o %t10
# RUN: llvm-readelf --file-headers --sections %t10 | FileCheck %s --check-prefix=PLACE-BEFORE
# PLACE-BEFORE: Start of section headers: 64 (bytes into file)
# PLACE-BEFORE: Size of section headers: 64 (bytes)
# PLACE-BEFORE: Number of section headers: 4
# PLACE-BEFORE: Section Headers:
# PLACE-BEFORE: [Nr] Name Type Address Off Size
## 0x140 == Start of section headers (64) + Size of section headers (64) * Number of section headers (4);
# PLACE-BEFORE: [ 1] .foo PROGBITS 0000000000000000 000140 000000
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Offset: [[OFFSET=<none>]]
Sections:
- Name: .foo
- Name: .strtab
- Name: .shstrtab
- Name: .foo
Type: SHT_PROGBITS
## Check we can use the Offset key to place the section header table at a different location.
# RUN: yaml2obj %s --docnum=10 -DOFFSET=0x1000 -o %t10.offset
# RUN: llvm-readelf --file-headers --sections %t10.offset | \
# RUN: FileCheck %s --check-prefix=PLACE-BEFORE-OFFSET
# PLACE-BEFORE-OFFSET: Start of section headers: 4096 (bytes into file)
# PLACE-BEFORE-OFFSET: Size of section headers: 64 (bytes)
# PLACE-BEFORE-OFFSET: Number of section headers: 4
# PLACE-BEFORE-OFFSET: Section Headers:
# PLACE-BEFORE-OFFSET: [Nr] Name Type Address Off Size
## 0x1100 == Start of section headers (0x1000) + Size of section headers (64) * Number of section headers (4);
# PLACE-BEFORE-OFFSET: [ 1] .foo PROGBITS 0000000000000000 001100 000000
## Check we can place the section header table somewhere in the middle of the sections list.
# RUN: yaml2obj %s --docnum=11 -o %t11
# RUN: llvm-readelf --sections %t11 | FileCheck %s --check-prefix=PLACE-AT-MIDDLE
# PLACE-AT-MIDDLE: There are 5 section headers, starting at offset 0x140:
# PLACE-AT-MIDDLE: [Nr] Name Type Address Off Size
# PLACE-AT-MIDDLE: [ 1] .foo PROGBITS 0000000000000000 000040 000100
## The section header table is placed here, at 0x40 + 0x100 == 0x140.
## The size of the table is 5 * 64 == 320 == 0x140.
## 0x140 + 0x140 == offset of the .bar section.
# PLACE-AT-MIDDLE-NEXT: [ 2] .bar PROGBITS 0000000000000000 000280 000200
# PLACE-AT-MIDDLE-NEXT: [ 3] .strtab STRTAB 0000000000000000 000480 000001
# PLACE-AT-MIDDLE-NEXT: [ 4] .shstrtab STRTAB 0000000000000000 000481 00001d
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
Size: 0x100
- Type: SectionHeaderTable
Sections:
- Name: .foo
- Name: .bar
- Name: .strtab
- Name: .shstrtab
- Name: .bar
Type: SHT_PROGBITS
Size: 0x200
## Check we don`t allow having multiple SectionHeaderTable chunks.
# RUN: not yaml2obj %s --docnum=12 -o /dev/null 2>&1 | FileCheck %s --check-prefix=MULTIPLE
# MULTIPLE: error: multiple section header tables are not allowed
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Sections: []
- Type: SectionHeaderTable
Sections: []
## Check that we place implicit sections before the section header table
## when it is placed at the end explicitly.
# RUN: yaml2obj %s --docnum=13 -o %t13
# RUN: llvm-readelf --sections %t13 | FileCheck %s --check-prefix=IMPLICIT
# IMPLICIT: There are 3 section headers, starting at offset 0x58:
# IMPLICIT: [Nr] Name Type Address Off Size
# IMPLICIT: [ 1] .strtab STRTAB 0000000000000000 000040 000001
# IMPLICIT-NEXT: [ 2] .shstrtab STRTAB 0000000000000000 000041 000013
## The section header table is placed here, at 0x58.
## alignTo(8, 0x41 + 0x13) == 0x58.
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Sections:
- Name: .strtab
- Name: .shstrtab