## Check how we can use the "Excluded" key of the "SectionHeaderTable" tag to exclude
## entries from the section header table.
## Check we can use the "Excluded" key to omit a section from the section header table.
## Check we do not include the name of the excluded section in the string table.
# RUN: yaml2obj %s -DINCLUDED=.foo -DEXCLUDED=.bar --docnum=1 -o %t1
# RUN: llvm-readelf --section-headers -p .shstrtab %t1 | \
# RUN: FileCheck %s -DSEC=.foo --check-prefixes=INCLUDE-SEC,INCLUDE-FOO
# RUN: yaml2obj %s -DINCLUDED=.bar -DEXCLUDED=.foo --docnum=1 -o %t2
# RUN: llvm-readelf --section-headers -p .shstrtab %t2 | \
# RUN: FileCheck %s -DSEC=.bar --check-prefixes=INCLUDE-SEC,INCLUDE-BAR
# INCLUDE-SEC: [Nr] Name
# INCLUDE-SEC: [ 1] [[SEC]]
# INCLUDE-SEC-NEXT: [ 2] .strtab
# INCLUDE-SEC-NEXT: [ 3] .shstrtab
# INCLUDE-SEC: String dump of section '.shstrtab':
# INCLUDE-FOO-NEXT: [ 1] .foo
# INCLUDE-BAR-NEXT: [ 1] .bar
# INCLUDE-SEC-NEXT: [ 6] .shstrtab
# INCLUDE-SEC-NEXT: [ 10] .strtab
# INCLUDE-SEC-NOT: {{.}}
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Name: .bar
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: [[INCLUDED]]
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: [[EXCLUDED]]
## Check we report an error when a section is in both the "Sections" and "Excluded" lists at the same time.
## Also check that we report an error if a section is missing from the lists.
# RUN: not yaml2obj %s -DINCLUDED=.bar -DEXCLUDED=.strtab --docnum=1 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=EXCLUDE-INCLUDED
# EXCLUDE-INCLUDED: error: repeated section name: '.strtab' in the section header description
# EXCLUDE-INCLUDED: error: section '.foo' should be present in the 'Sections' or 'Excluded' lists
## Check we report an error when the `Excluded` key mentions an unknown section.
# RUN: not yaml2obj %s -DINCLUDED=.bar -DEXCLUDED=.unknown --docnum=1 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=EXCLUDE-UNKNOWN
# EXCLUDE-UNKNOWN: error: section '.foo' should be present in the 'Sections' or 'Excluded' lists
# EXCLUDE-UNKNOWN: error: section header contains undefined section '.unknown'
## Check we report an error when the `Excluded` key mentions a section more than once.
# RUN: not yaml2obj %s --docnum=2 -o /dev/null 2>&1 | FileCheck %s --check-prefix=EXCLUDE-TWICE
# EXCLUDE-TWICE: error: repeated section name: '.strtab' in the section header description
# EXCLUDE-TWICE: error: repeated section name: '.strtab' in the section header description
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Sections:
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .strtab
- Name: .strtab
## Check that we are able to exclude all sections, except the implicit
## null section, with the use of the "Excluded" key.
## Case A: the "Sections" key is present, but empty.
# RUN: yaml2obj %s --docnum=3 -o %t3
# RUN: llvm-readelf --section-headers %t3 | FileCheck %s --check-prefix=NO-SECTIONS
# NO-SECTIONS: There are 1 section headers, starting at offset 0x48:
# NO-SECTIONS: Section Headers:
# NO-SECTIONS-NEXT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# NO-SECTIONS-NEXT: [ 0] <no-strings> NULL 0000000000000000 000000 000000 00 0 0 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Sections: []
Excluded:
- Name: .strtab
- Name: .shstrtab
## Case B: the "Sections" key is not present.
# RUN: yaml2obj %s --docnum=4 -o %t4
# RUN: llvm-readelf --section-headers %t4 | FileCheck %s --check-prefix=NO-SECTIONS
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Excluded:
- Name: .strtab
- Name: .shstrtab
## Check how we handle cases when a section is excluded, but its section index is needed.
## The general rule is: when a section is explicitly linked with another section, which is
## excluded, then we report an error. In the case when it is linked implicitly with an excluded
## section, we use 0 as index value.
## Case A: check we report an error when a regular section has a Link field which
## points to an excluded section.
# RUN: not yaml2obj %s --docnum=5 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.foo -DTARGET=.bar
# LINK: error: unable to link '[[SEC]]' to excluded section '[[TARGET]]'
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
Link: .bar
- Name: .bar
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: .foo
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .bar
## Case B.1: check we report an error when a symbol table section has a Link field which
## points to an excluded section.
# RUN: not yaml2obj %s --docnum=6 -DNAME=.symtab -DTYPE=SHT_SYMTAB -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.symtab -DTARGET=.foo
# RUN: not yaml2obj %s --docnum=6 -DNAME=.dynsym -DTYPE=SHT_DYNSYM -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.dynsym -DTARGET=.foo
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: [[NAME]]
Type: [[TYPE]]
Link: .foo
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: [[NAME]]
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .foo
## Case B.2: check we do not link .dynsym with .dynstr implicitly when the latter is excluded.
# RUN: yaml2obj %s --docnum=7 -o %t5
# RUN: llvm-readelf %t5 --section-headers | FileCheck %s --check-prefix=LINK-DYNSYM
# LINK-DYNSYM: [Nr] Name Type Address Off Size ES Flg Lk
# LINK-DYNSYM: [ 1] .dynsym DYNSYM 0000000000000000 000040 000018 18 A 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .dynsym
Type: SHT_DYNSYM
- Name: .dynstr
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: .dynsym
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .dynstr
## Case B.3: check we do not link .symtab with .strtab implicitly when the latter is excluded.
# RUN: yaml2obj %s --docnum=8 -o %t6
# RUN: llvm-readelf %t6 --section-headers | FileCheck %s --check-prefix=LINK-SYMTAB
# LINK-SYMTAB: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# LINK-SYMTAB: [ 1] .symtab SYMTAB 0000000000000000 000040 000018 18 0 1 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .symtab
Type: SHT_SYMTAB
- Name: .strtab
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: .symtab
- Name: .shstrtab
Excluded:
- Name: .strtab
## Case C: check we report an error when a debug section has a Link field which
## points to an excluded section.
# RUN: not yaml2obj %s --docnum=9 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.debug_unknown -DTARGET=.strtab
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_EXEC
Sections:
- Name: .debug_unknown
Type: SHT_PROGBITS
Link: .strtab
- Type: SectionHeaderTable
Sections:
- Name: .debug_unknown
- Name: .shstrtab
Excluded:
- Name: .strtab
## Case D.1: check we report an error when a relocatable section has an Info field which
## points to an excluded section.
# RUN: not yaml2obj %s --docnum=10 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.rela -DTARGET=.strtab
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .rela
Type: SHT_RELA
Info: .strtab
Relocations: []
- Type: SectionHeaderTable
Sections:
- Name: .rela
- Name: .shstrtab
Excluded:
- Name: .strtab
## Case D.2: check we report an error when the SHT_REL[A] section is linked
## with an excluded section explicitly.
# RUN: not yaml2obj %s --docnum=11 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.rela -DTARGET=.symtab
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .rela
Type: SHT_RELA
Link: .symtab
Relocations: []
- Name: .symtab
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: .rela
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .symtab
## Case E: check we report an error when a symbol references an excluded section.
# RUN: not yaml2obj %s --docnum=12 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=SYMBOL-SECTION
# SYMBOL-SECTION: error: excluded section referenced: '.foo' by symbol 'foo'
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .foo
Type: SHT_PROGBITS
- Type: SectionHeaderTable
Sections:
- Name: .symtab
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .foo
Symbols:
- Name: foo
Type: STT_OBJECT
Section: .foo
## Case F.1: check we report an error when a group section
## contains an excluded section member.
# RUN: not yaml2obj %s --docnum=13 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.group -DTARGET=.strtab
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .group
Type: SHT_GROUP
Members:
- SectionOrType: .strtab
- Type: SectionHeaderTable
Sections:
- Name: .group
- Name: .shstrtab
Excluded:
- Name: .strtab
## Case F.2: check we report an error when the group section is linked
## to an excluded section explicitly.
# RUN: not yaml2obj %s --docnum=14 -o /dev/null 2>&1 | \
# RUN: FileCheck %s --check-prefix=LINK -DSEC=.group -DTARGET=.symtab
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .group
Type: SHT_GROUP
Link: .symtab
Members: []
- Name: .symtab
Type: SHT_SYMTAB
- Type: SectionHeaderTable
Sections:
- Name: .group
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .symtab
## Case G: check we do not link SHT_LLVM_CALL_GRAPH_PROFILE/SHT_LLVM_ADDRSIG/SHT_GROUP/SHT_REL[A] sections
## with .symtab implicitly when the latter is excluded.
# RUN: yaml2obj %s --docnum=15 -o %t7
# RUN: llvm-readelf %t7 --section-headers | FileCheck %s --check-prefix=LINK-IMPLICIT
# LINK-IMPLICIT: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# LINK-IMPLICIT: [ 1] .cgp LLVM_CALL_GRAPH_PROFILE 0000000000000000 000040 000000 08 0 0 0
# LINK-IMPLICIT-NEXT: [ 2] .llvm_addrsig LLVM_ADDRSIG 0000000000000000 000040 000000 00 0 0 0
# LINK-IMPLICIT-NEXT: [ 3] .group GROUP 0000000000000000 000040 000000 04 0 0 0
# LINK-IMPLICIT-NEXT: [ 4] .rela RELA 0000000000000000 000040 000000 18 0 0 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .cgp
Type: SHT_LLVM_CALL_GRAPH_PROFILE
Content: ""
- Name: .llvm_addrsig
Type: SHT_LLVM_ADDRSIG
Content: ""
- Name: .group
Type: SHT_GROUP
Members: []
- Name: .rela
Type: SHT_RELA
Relocations: []
- Name: .symtab
Type: SHT_SYMTAB
- Type: SectionHeaderTable
Sections:
- Name: .cgp
- Name: .llvm_addrsig
- Name: .group
- Name: .rela
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .symtab
## Case H: check we do not link SHT_HASH/SHT_GNU_HASH sections with .dynsym
## implicitly when the latter is excluded.
# RUN: yaml2obj %s --docnum=16 -o %t8
# RUN: llvm-readelf %t8 --section-headers | FileCheck %s --check-prefix=LINK-HASH
# LINK-HASH: [Nr] Name Type Address Off Size ES Flg Lk Inf Al
# LINK-HASH: [ 1] .hash HASH 0000000000000000 000040 000000 04 0 0 0
# LINK-HASH-NEXT: [ 2] .gnu_hash GNU_HASH 0000000000000000 000040 000000 00 0 0 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_DYN
Sections:
- Name: .hash
Type: SHT_HASH
Content: ""
- Name: .gnu_hash
Type: SHT_GNU_HASH
Content: ""
- Name: .dynsym
Type: SHT_DYNSYM
- Type: SectionHeaderTable
Sections:
- Name: .hash
- Name: .gnu_hash
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .dynsym
## Case I: document the case when an excluded section is explicitly linked to another excluded section.
## We report an error in this case, because:
## 1) It is a reasonable behavior, as it is perhaps usually a result of a mistake
## in a YAML description.
## 2) Helps to keep the code simpler.
# RUN: not yaml2obj %s --docnum=17 -o /dev/null 2>&1 | FileCheck %s --check-prefix=CROSS-LINK
# CROSS-LINK: error: unable to link '.foo' to excluded section '.bar'
# CROSS-LINK-NEXT: error: unable to link '.bar' to excluded section '.foo'
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Name: .foo
Type: SHT_PROGBITS
Link: .bar
- Name: .bar
Type: SHT_PROGBITS
Link: .foo
- Type: SectionHeaderTable
Sections:
- Name: .strtab
- Name: .shstrtab
Excluded:
- Name: .foo
- Name: .bar
## Check we set e_shstrndx field to 0 when the section header string table is excluded.
## Check that the e_shnum field is adjusted properly when a section is removed.
# RUN: yaml2obj --docnum=18 %s -o %t9
# RUN: llvm-readelf --file-headers %t9 | FileCheck %s --check-prefix=SHSTRTAB
# SHSTRTAB: Number of section headers: 2
# SHSTRTAB: Section header string table index: 0
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
Sections:
- Name: .strtab
Excluded:
- Name: .shstrtab
## Check we do not allow using "Excluded" together with "NoHeaders".
# RUN: not yaml2obj %s --docnum=19 -DNOHEADERS=true -o /dev/null 2>&1 | FileCheck %s --check-prefix=NOHEADERS
# RUN: not yaml2obj %s --docnum=19 -DNOHEADERS=false -o /dev/null 2>&1 | FileCheck %s --check-prefix=NOHEADERS
# NOHEADERS: NoHeaders can't be used together with Offset/Sections/Excluded
--- !ELF
FileHeader:
Class: ELFCLASS64
Data: ELFDATA2LSB
Type: ET_REL
Sections:
- Type: SectionHeaderTable
NoHeaders: [[NOHEADERS]]
Excluded: []
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