The Nest
Explore
0
Compiler projects using llvm 
## Check that obj2yaml is able to dump a normal object which
## contains the SHT_SYMTAB_SHNDX section and symbols with
## section index == SHN_XINDEX.

# RUN: yaml2obj --docnum=1 %s -o %t1
# RUN: obj2yaml %t1 | FileCheck %s --check-prefix=CASE1

# CASE1:      --- !ELF
# CASE1-NEXT: FileHeader:
# CASE1-NEXT:   Class: ELFCLASS64
# CASE1-NEXT:   Data:  ELFDATA2LSB
# CASE1-NEXT:   Type:  ET_REL
# CASE1-NEXT: Sections:
# CASE1-NEXT:   - Name: bar
# CASE1-NEXT:     Type: SHT_PROGBITS
# CASE1-NEXT:   - Name: .symtab_shndx
# CASE1-NEXT:     Type: SHT_SYMTAB_SHNDX
# CASE1-NEXT:     Link: .symtab
# CASE1-NEXT:     Entries: [ 0, 1, 2 ]
# CASE1-NEXT: Symbols:
# CASE1-NEXT:   - Name:  bar
# CASE1-NEXT:     Type:  STT_SECTION
# CASE1-NEXT:     Index: SHN_XINDEX
# CASE1-NEXT:   - Name:  .symtab_shndx
# CASE1-NEXT:     Type:  STT_SECTION
# CASE1-NEXT:     Index: SHN_XINDEX
# CASE1-NEXT: ...

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Sections:
  - Name: bar
    Type: SHT_PROGBITS
  - Name:    .symtab_shndx
    Type:    SHT_SYMTAB_SHNDX
    Entries: [ 0, 1, 2 ]
    Link:    .symtab
Symbols:
  - Type:  STT_SECTION
    Index: SHN_XINDEX
  - Type:  STT_SECTION
    Index: SHN_XINDEX

## Check that yaml2obj is unable to dump an object, which has
## symbols with section index == SHN_XINDEX, but no SHT_SYMTAB_SHNDX section.

# RUN: yaml2obj --docnum=2 %s -o %t2
# RUN: not obj2yaml %t2 2>&1 | FileCheck %s -DFILE=%t2 --check-prefix=CASE2

# CASE2: Error reading file: [[FILE]]: found an extended symbol index (1), but unable to locate the extended symbol index table

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Symbols:
  - Type:  STT_SECTION
    Index: SHN_XINDEX

## Check that yaml2obj is unable to dump an object, which has symbols with
## section index == SHN_XINDEX, but SHT_SYMTAB_SHNDX table contains invalid indices
## that are larger than total number of the sections.

# RUN: yaml2obj --docnum=3 %s -o %t3
# RUN: not obj2yaml %t3 2>&1 | FileCheck %s -DFILE=%t3 --check-prefix=CASE3

# CASE3: Error reading file: [[FILE]]: invalid section index: 254

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Sections:
  - Name: bar
    Type: SHT_PROGBITS
  - Name:    .symtab_shndx
    Type:    SHT_SYMTAB_SHNDX
    Entries: [ 0, 254 ]
    Link:    .symtab
Symbols:
  - Type:  STT_SECTION
    Index: SHN_XINDEX

## Check that yaml2obj is unable to dump an object, which has symbols with
## section index == SHN_XINDEX, but SHT_SYMTAB_SHNDX table contains more
## entries than the number of symbols in .symtab.

# RUN: yaml2obj --docnum=4 %s -o %t4
# RUN: not obj2yaml %t4 2>&1 | FileCheck %s -DFILE=%t4 --check-prefix=CASE4

## CASE4: Error reading file: [[FILE]]: unable to read extended section indexes: SHT_SYMTAB_SHNDX has 3 entries, but the symbol table associated has 2

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Sections:
  - Name: bar
    Type: SHT_PROGBITS
  - Name:    .symtab_shndx
    Type:    SHT_SYMTAB_SHNDX
    Entries: [ 0, 1, 2 ]
    Link:    .symtab
Symbols:
  - Type:  STT_SECTION
    Index: SHN_XINDEX

## ELF gABI allows having multiple SHT_SYMTAB_SHNDX sections.
## Only one is allowed to be linked with a corresponding symbol table section though.
## Check we report an error when multiple SHT_SYMTAB_SHNDX sections are linked
## to the same symbol table.

# RUN: yaml2obj --docnum=5 %s -o %t5
# RUN: not obj2yaml %t5 2>&1 | FileCheck %s -DFILE=%t5 --check-prefix=CASE5

# CASE5: Error reading file: [[FILE]]: multiple SHT_SYMTAB_SHNDX sections are linked to the same symbol table with index 5

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Sections:
  - Name:    .symtab_shndx1
    Type:    SHT_SYMTAB_SHNDX
    Entries: [ 0, 1 ]
    EntSize: 4
    Link:    .symtab
  - Name:    .symtab_shndx2
    Type:    SHT_SYMTAB_SHNDX
    Entries: [ 0, 2 ]
    Link:    [[LINK=.symtab]]
Symbols:
  - Type:  STT_SECTION
    Index: SHN_XINDEX
DynamicSymbols:
  - Type:  STT_SECTION
    Index: SHN_XINDEX

## Check it is possible to dump an object that has multiple SHT_SYMTAB_SHNDX sections.
## Check that yaml2obj can dump the object and dynamic symbols properly when
## the SHT_SYMTAB_SHNDX section is associated with a SHT_DYNSYM section.

# RUN: yaml2obj --docnum=5 -DLINK=.dynsym %s -o %t5.multiple
# RUN: obj2yaml %t5.multiple | FileCheck %s --check-prefix=MULTIPLE-SYMTAB

# MULTIPLE-SYMTAB:      - Name: .symtab_shndx1
# MULTIPLE-SYMTAB-NEXT:   Type: SHT_SYMTAB_SHNDX
# MULTIPLE-SYMTAB-NEXT:   Link: .symtab
# MULTIPLE-SYMTAB:      - Name: .symtab_shndx2
# MULTIPLE-SYMTAB-NEXT:   Type: SHT_SYMTAB_SHNDX
# MULTIPLE-SYMTAB-NEXT:   Link: .dynsym
# MULTIPLE-SYMTAB:      Symbols:
# MULTIPLE-SYMTAB-NEXT:   - Name:  .symtab_shndx1
# MULTIPLE-SYMTAB-NEXT:     Type:  STT_SECTION
# MULTIPLE-SYMTAB-NEXT:     Index: SHN_XINDEX
# MULTIPLE-SYMTAB-NEXT: DynamicSymbols:
# MULTIPLE-SYMTAB-NEXT:   - Name:   .symtab_shndx2
# MULTIPLE-SYMTAB-NEXT:     Type:   STT_SECTION
# MULTIPLE-SYMTAB-NEXT:     Index:  SHN_XINDEX

## Check that yaml2obj can't dump the object if SHT_SYMTAB_SHNDX is
## not associated with a SHT_SYMTAB section (this case is illegal).

# RUN: yaml2obj --docnum=6 %s -o %t6
# RUN: not obj2yaml %t6 2>&1 | FileCheck %s -DFILE=%t6 --check-prefix=CASE6

# CASE6: Error reading file: [[FILE]]: unable to read extended section indexes: SHT_SYMTAB_SHNDX section is linked with SHT_PROGBITS section (expected SHT_SYMTAB/SHT_DYNSYM)

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Sections:
  - Name:    .symtab_shndx
    Type:    SHT_SYMTAB_SHNDX
    Entries: [ 0 ]
    Link:    .foo
  - Name:    .foo
    Type:    SHT_PROGBITS

## Check that we are unable to dump the SHT_SYMTAB_SHNDX section when its
## sh_entsize has an unexpected value (not equal to 4).

# RUN: yaml2obj -DENTSIZE=0xff --docnum=7 %s -o %t7.entsize.bad
# RUN: not obj2yaml %t7.entsize.bad 2>&1 | \
# RUN:   FileCheck %s -DFILE=%t7.entsize.bad --check-prefix=CASE7-BAD

# CASE7-BAD: Error reading file: [[FILE]]: unable to read extended section indexes: section [index 1] has invalid sh_entsize: expected 4, but got 255

## Check we don't print the "EntSize" field when the "sh_entsize" field has the default value.

# RUN: yaml2obj -DENTSIZE=4 --docnum=7 %s -o %t7.entsize.ok
# RUN: obj2yaml %t7.entsize.ok | FileCheck %s -DFILE=%t7.entsize.ok --check-prefix=CASE7

# CASE7:      - Name:    .symtab_shndx
# CASE7-NEXT:   Type:    SHT_SYMTAB_SHNDX
# CASE7-NEXT:   Link:    .symtab
# CASE7-NEXT:   Entries: [ 0 ]
# CASE7-NEXT: Symbols:

--- !ELF
FileHeader:
  Class: ELFCLASS64
  Data:  ELFDATA2LSB
  Type:  ET_REL
Sections:
  - Name:    .symtab_shndx
    Type:    SHT_SYMTAB_SHNDX
    EntSize: [[ENTSIZE]]
    Entries: [ 0 ]
    Link:    .symtab
Symbols: []